PowerGrid HandBook

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how to apply for electricity connection

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This handbook is published by PowerGrid Ltd
in collaboration with SP Services Ltd
December 2002
Procedures and requirements highlighted in this handbook are
correct at the time of printing. Any changes that may arise will
be reflected in the next edition.
ISBN: 981-04-6932-3
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Tel No Fax No
SP SERVICES LTD
General Enquiry on Application 68238287 68238289
For Connection to Transmission System 68238340
Consumer Connection Agreement
Contracts Section 68238282 68238289
Testing and Turn-On Appointment
Supply Application Section 68238287 68238289
Installation Section 62777064 62777044
Opening of Utilities Accounts
Enquiry 1800-2356841 68238219
POWERGRID LTD
Endorsement of Substation Drawings
East zone 68238555 68238564
West zone 68238556 68238564
Installation of Meters
Senior Manager (Meter) 62777000 62777008
Enquiry 62777005
Im portant
Contact N um bers
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1 GENERAL INFORMATION 7
1.1 Introduction 7
1.2 Connection Voltages And Supply Frequency 7
1.3 Submission Of Application 8
1.4 Provision Of A Substation 8
1.5 Domestic Premises And Load Requirement Not Exceeding 45kVA 9
1.6 Meter 9
1.7 Tariffs For Non-Contestable Customers 10
1.8 Payment For Electricity Charges By Contestable Customers 10
1.9 Opening Account And Payment Of Security Deposit For
Use Of System (UOS) Charges 10
1.10 Termination Of Account 10
1.11 Disconnection Of Service Cables 10
2 APPLICATION FOR LOAD CONNECTION 11
2.1 Distribution Connection 11
2.2 Transmission Connection 14
3 TRANSMISSION CHARGES 17
3.1 Consumer Connection Agreement 17
3.2 Use of System (UOS) Charges For Non-Contestable Customers 18
3.3 Use of System (UOS) Charges For Contestable Customers 19
3.4 Temporary Supply 22
3.5 Supply For Power Stations 22
Table of Contents
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4 ENERGISATION AND TURN-ON PROCEDURES 23
4.1 Non-Domestic Premises
(Load Requirement Not Exceeding 45kVA), And Domestic
Premises Where Electrical Installations Are Provided
And Pre-Inspected Or Previously Inspected And Energised 23
4.2 Premises With Direct Connection
From PowerGrids Transmission System 24
4.3 Booking An Appointment 25
4.4 Premises With Indirect Connection
(i.e. Premises In a Multi-Metered Development) 27
4.5 Modification To An Existing Electrical Installation 28
4.6 Licence To Use Or Operate An Electrical Installation 28
4.7 Certificates And Statements For First Energisation
Of Service Connection 28
4.8 Lead-Time For Application For Service Connection 29
4.9 Notes To Be Read In Conjunction With Application Procedure 31
5 CUSTOMERS INSTALLATION REQUIREMENTS 35
5.1 Requirements For HV And LV Connection (22kV And Below) 35
5.2 Requirements For EHV Connection (230kV And 66kV) 37
6 METERING REQUIREMENTS 39
6.1 General 39
6.2 Location Of Meter 40
6.3 Meter/Service Board Specifications (Single-Phase
And 3-Phase Services, Not Exceeding 100A Per Phase) 42
6.4 Wiring, Layout Of Meters, MCBs, etc
In Centralised Meter Rooms, Meter Compartments/
Riser Ducts/Cupboards 42
6.5 Submission Of Layout Plans 43
6.6 Meters For 3-Phase Low Voltage Connection
(Exceeding 100A Per Phase) 43
6.7 High Voltage/Extra High Voltage Metering 44
6.8 Master- And Sub-Metering Scheme 46
6.9 Metering Requirements 46
6.10 Contestable Customers 48
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7 APPENDICES 49
1 Application Form For Connection To PowerGrid
Transmission System 50
2 Consultation Form For Connection To PowerGrid
Transmission System 52
3 Form CS/3 Letter Of Consent From The Landlord/Management
Corporation 53
4 Form CS/3H Letter Of Consent From
The Housing & Development Board 54
5 Request To Handover Substation 55
6 Application For The Supply Of Water, Electricity And/Or Gas 56
7 Application For Interbank Giro 57
8 Form CS/5 Application For Inspection Of Electrical Installation 58
9 Types And Layout Of Substation 60
10 Submission Of Substation Site And Design Plans 61
11 6.6kV/LV Substation (4 drawings) 62
12 22kV/LV Substation (5 drawings) 66
13 Heavy Aluminium Louvred Door For Electric Substation (6 drawings) 71
14 Gate Details (2 drawings) 77
15 Checklist For Substation Building Plan Submission 79
16 Substation Layout Requirements To Be Incorporated
In The Architectural Plans 80
17 General Requirements For EHV Substation (66kV And 230kV Only) 82
18 Protection Requirements For Customers 22kV and 6.6kV
Main Incoming Switchgear 83
Protection Requirements For Customers LV Main
Incoming Switchgear 84
Type 1: Customer 66kV Feeder Connection
(Without Embedded Generation Plant) 85
Type 2: Customer 66kV Feeder Connection
(With Embedded Generation Plant) 86
Type 3: Customer 66kV Feeder Transformer Connection 87
Type 4: Customer 230kV Feeder Connection 88
Type 5: Customer 230kV Feeder Transformer Connection 89
19 Application For De-Energisation/Re-Energisation (ADRE) 90
20 Statement For De-Energisation And Re-Energisation (SDRE) 91
21 Certificate Of Readiness For The Energisation Of Service Connection 92
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22.1 Form CS/6 Request For Installation Of Electricity kWh Meter
For New Supply Under Direct Supply From PowerGrid
(Contestable Customer) 94
22.2 Form CS/7 Request For Installation Of Electricity kWh Meter
(For Load Exceeding 45kVA) Under Multi-Metered Building Scheme 95
23 Application For Appointment For Energisation Of
Service Connection By Fax 97
24 Technical Requirements For Service Cable And
Meter Compartment For Landed Houses 98
Standard Meter Compartments At Gate Pillar 99
25 Standard Meter Board 100
26 Standard Size For Single-Phase Meter Board 101
27 Standard Size For Three-Phase Meter Board 102
28 CT Meter Panel For Low Voltage Supply 103
29 Methods Of Sealing Meter Panels 104
30 Enclosure For Low Voltage Metering Current Transformers 105
31 HV Metering Kiosk Requirements (For 1 Or 2 Feeders) 106
32 HV Metering Kiosk Requirements (For 3 Or 4 Feeders) 107
CT Meter Panel For Low Voltage Supply 108
33 HV Metering Panel Requirements (For 1 or 2 Feeders) 109
34 Voltage Ratio, Sequence And Phase Angle Tests Report 110
35 Basis For The Service Connection Charge 111
36 Standard Service Connection Cables 112
37 Certificate of Compliance
Regulation 5(2) Of The Electricity
(Electrical Installations) Regulations 2002 113
38 Statement Of Turn-On Of Electricity
Regulation 5(3) Of The Electricity
(Electrical Installations) Regulations 2002 114
39 Requirements For Exempt Generation Facility Not Exceeding 1MW 115
40 List of Standards
IEC Standards 116
British Standards 119
Singapore Standards 120
Other Standards 120
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G eneral Inform ation
G eneral
Inform ation 1
1.1 INTRODUCTION
1.1.1 SP Services Ltd (SPSL) and PowerGrid Ltd (PowerGrid) are subsidiaries of
Singapore Power Ltd. SPSL provides support services for the electricity
market. It receives requests for electricity service connection; offers terms
and conditions of service connection; arranges for service connection
energisation/turn-on; and collects transmission charges, security deposits
and charges for other services on behalf of PowerGrid. SPSL also bills
customers for consumption. PowerGrid develops, operates and maintains
transmission and distribution facilities.
1.1.2 The supply of electricity and electrical installation practices are governed
by the Electricity Act and its subsidiary legislation.
1.2 CONNECTION VOLTAGES AND SUPPLY FREQUENCY
1.2.1 In Singapore, customers load installations are connected at the following
voltages:
1.2.1.1 Transmission voltage of 66kV and 230kV
1.2.1.2 Distribution voltage of 230V, 400V, 22kV (may vary within 6%)
The supply voltages are classified in the following categories:
1.2.1.3 Low voltage (LV) refers to 230V, single-phase and 400V, 3-phase
1.2.1.4 High voltage (HV) refers to 22kV
1.2.1.5 Extra high voltage (EHV) refers to 66kV and 230kV
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1.2.2 The following connection schemes are provided, according to customers
load requirements:
1.2.2.1 230V, 50Hz, single-phase, up to maximum of 23kVA, 100A
1.2.2.2 400V, 50Hz, 3-phase, 4-wire
1.2.2.3 22kV, 50Hz, 3-phase, 3-wire for a Contracted Capacity of:
1.2.2.3.1 between 1,700kW and 12,750kW for 2 HV services
1.2.2.3.2 between 12,751kW and 25,500kW for 4 HV services
1.2.2.4 66kV, 50Hz, 3-phase, 3-wire for connection with minimum Contracted
Capacity of 25,500kW
1.2.2.5 230kV, 50Hz, 3-phase, 3-wire for connection with minimum Contracted
Capacity of 85,000kW
1.2.3 Where the customer requires a connection voltage and/or frequencies that
differ from those specified above, the customer is required to provide, install
and maintain the necessary transformation equipment.
1.3 SUBMISSION OF APPLICATION
SPSL serves as a one-stop customer service centre. It receives all application
forms on behalf of PowerGrid, and responds to all applications made by the
Licenced Electrical Worker (LEW), who acts as the customers agent for
connection to the transmission system.
Customers applying for their installations to be connected to PowerGrids
transmission system must submit their applications through their LEWs.
Every application must be accompanied by all supporting documentation
requested by SPSL. A copy of the Application Form is shown in Appendix 1.
For a development in the conception/planning stage, the customer is advised
to seek consultation regarding PowerGrids requirements, such as the
provision of a substation, for load connection. The Consultation Form
(Appendix 2) must be submitted directly to PowerGrid by the customers
LEW.
1.4 PROVISION OF A SUBSTATION
1.4.1 Direct service connection from PowerGrids LV network to the customers
installation is available for a small load requirement not exceeding 280kVA
(400A). However, the provision of a direct service connection is dependent
on the available network capacity in the vicinity. If there is insufficient
capacity, the customer is required to provide a substation for the connection.
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1.4.2 For a larger load requirement exceeding 280kVA (400A), the customer has
to provide a substation for PowerGrid to install necessary equipment to cater
for the load.
1.5 DOMESTIC PREMISES AND LOAD REQUIREMENT NOT EXCEEDING
45kVA
1.5.1 For premises where the electricity meter has already been installed by
PowerGrid and no extension or rewiring work is required, electricity service
connection will be turned-on on the 4th working day from the date of the
opening of an account with SPSL.
1.5.2 For premises where there is no electricity meter or where extension or
rewiring work is required, the customer has to engage an LEW and submit
an application for load connection (See Section 2).
1.6 METER
All meters required for measuring a customers electricity consumption and
demand (where applicable) are provided and maintained by PowerGrid. The
customer provides meter boards, compartments, kiosks etc, as PowerGrid
may require for the installation of its metering equipment.
1.6.1 Master- And Sub-Metering
A Master-meter is a meter measuring the consumption for all units and
common areas in a building or cluster of buildings which are used or occupied
by multiple consumers.
A Sub-meter is a meter measuring the consumption for a unit in a building
or cluster of buildings used or occupied by multiple consumers, whose
electricity is taken through a Master-meter.
1.6.1.1 Multi-Metered Premises
The following are categories of multi-metered premises:
1.6.1.1.1 Residential premises which have landlord and tenant supply connections
1.6.1.1.2 Commercial complexes which have landlord and tenant supply connections
1.6.1.1.3 Multi-storey factories or industrial complexes which have landlord and tenant
supply connections
1.6.1.1.4 All multi-metered premises fall under the Master- and Sub-metering scheme,
with the exception of HDB residential premises.
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1.7 TARIFFS FOR NON-CONTESTABLE CUSTOMERS
1.7.1 Tariffs are currently charged for low tension, high tension and extra high
tension electricity consumption.
1.7.2 Tariffs are subject to change and are published by SPSL from time to time.
Onl i ne i nformati on on the l atest el ectri ci ty tari ffs are avai l abl e at
www.spservices.com.sg.
1.8 PAYMENT FOR ELECTRICITY CHARGES BY CONTESTABLE CUSTOMERS
Contestable customers pay to SPSL or authorised retailers, charges for
electricity consumption as ascertained by meters, and transmission charges
and other fixed charges as determined by SPSL. Payment for electricity
charges must be made on or before the due date specified in the bill.
1.9 OPENING ACCOUNT AND PAYMENT OF SECURITY DEPOSIT FOR USE
OF SYSTEM (UOS) CHARGES
The customer must open an account and place a security deposit for UOS
charges with SPSL upon application for energisation of service connection.
1.10 TERMINATION OF ACCOUNT
Non-contestable customers must give 4 business days notice and contestable
customers must give 12 business days notice to terminate an account. Such
notices must be in writing.
1.11 DISCONNECTION OF SERVICE CABLES
Disconnection work involves the de-energisation and removal of service
cables and equipment (See 4.9.6). The following are indicative lead-times
for the work:
1.11.1 For disconnection and removal of LV service cables where road-opening
work is not involved, the lead-time is about 5 business days. Where road
opening work is involved, a lead-time of 1 month is required.
1.11.2 For disconnection of 6.6kV and 22kV where removal of service cables and
equipment are involved, the lead-time is about 1 month.
1.11.3 For disconnection of 66kV and 230kV service cables, the service cable and
equipment are de-energised within 10 business days, subject to the approval
of the Power System Operator (PSO). The subsequent removal of service
cables and equipment will depend on the operational requirement and
approval of the PSO.
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A pplication For Load C onnection
2.1 DISTRIBUTION CONNECTION
2.1.1 Introduction
Each premises can have only one customers intake connection point. For
modification of connection (such as upgrading of the load requirement) to
existing premises, the customer is required to amalgamate the existing service
connection into one intake.
2.1.2 Consultation
For a development in the initial planning stage, the customer is advised to
seek consultation with PowerGrid to ascertain PowerGrids requirements
for a new or modified connection to the transmission system. The LEW is
required to submit the Consultation Form (Appendix 2), together with a site/
location plan to PowerGrid.
After receipt of the submission for consultation, PowerGrid will send a reply
stating the approved load and other technical requirements, such as the
provision of substation requirements necessary for the load connection to
the transmission system.
2.1.3 Application
The Application Form (Appendix 1), together with a copy of the site/location
plan, must be submitted to SPSL by the LEW for new or modified connections
of new or existing premises to the transmission system.
Application For
Load Connection 2
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2.1.3.1 Processing Of Application
Generally, SPSL responds to applications within 10 business days. The
responses are made according to the following customer categories:
2.1.3.1.1 Contestable Customer
A Consumer Connection Agreement, containing the service connection
charge payable, the offer letter and the standard terms and conditions
with respect to the distribution service connection.
If a substation is required, a letter stipulating the requirements will be
forwarded to the customer, and an Agreement offered after the substations
plans are endorsed.
2.1.3.1.2 Non-Contestable Customer
A Quotation, containing service connection charge payable and the
conditions of service with respect to the distribution service connection.
If a substation is required, a letter stipulating the requirements will be
forwarded to the customer. A Supply Agreement, including the service
connection charge payable and the terms and conditions with respect to
the distribution service connection, is offered after the substations plans
are endorsed.
2.1.3.2 Commencement Of Work
PowerGrid commences work only when the Agreement has been signed
and received by SPSL, together with payment of service connection
charges.
2.1.4 Types Of Premises
2.1.4.1 Multi-Metered Premises
2.1.4.1.1 A multi-metered premises is one where the landlord/MCST (i.e. a master-
metered consumer or directly connected consumer) receives bulk intake
service connection from PowerGrid, and transforms/reticulates the supply
to all the tenants (i.e. sub-metered consumers) within the premises. Any
application for new or modified connection (including upgrading) for the
bulk intake to the multi-metered premises must be made by the landlord
through its LEW.
A master-metered consumer means a consumer that is responsible for the
common usage of a master-metered installation which is connected to the
transmission system.
A master-metered installation means an installation in which supply is
received by a master-metered consumer and sub-metered consumers.
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A sub-metered consumer means a consumer, other than a master-metered
consumer, that receives supply in a master-metered installation via the
electrical system owned by a master-metered consumer.
2.1.4.1.2 The landlord/MCST or HDB, in the case of HDB premises, must ensure that
the total applied load requirement for service connections to the multi-
metered premises meet the total existing and future load requirements for
all tenants. All tenants applying for any upgrading of load must do so through
their master-metered consumer. In this regard, the master-metered consumer
must approve the load of all tenants within the premises.
2.1.4.1.3 If the landlords existing approved load is insufficient to cater for the tenants
load requirement, the landlord, as a master-metered consumer, must submit
an application to SPSL for modification (upgrading) of service connection
to the exi sti ng premi ses. In thi s case, the exi sti ng servi ce cabl es are
amalgamated with the new intake. Hence, there will not be separate direct
connections to the tenants of such premises.
2.1.4.2 Premises In Private Housing, Industrial Estates, Commercial Developments
Requiring Provision Of Low Voltage (LV) Distribution Network
2.1.4.2.1 For connection to premises where several parcels of land are to be sold or
leased individually, one or more substations must be provided by the
developer. Where the individual parcels of land are to be sold prior to
development of these substations, details of the substation requirements and
approved load must be included in the sales agreement by the future land
parcels owner or lessee.
2.1.4.2.2 The developer must provide the developments total load requirement and
include the breakdown of the individual premises load requirement (as
specified in the sales agreement) and the communal load requirement, if
applicable.
2.1.4.2.3 In the case of landed housing estate development, the LEW must liaise with
National Parks Board for the siting of overground distribution boxes on turfed
areas. PowerGrid will provide and install the LV distribution network and
service connection cables for the development.
2.1.4.3 Premises Involving Temporary Connection With Provision Of Substation
2.1.4.3.1 Special terms and conditions apply in such cases for temporary connection
to construction worksites and other temporary premises. The term granted
for temporary connection is usually 24 months.
2.1.4.3.2 Where there is a need for the provision of a temporary substation, the
customer must provide the site and construct the structure of the substation
according to the requirements of PowerGrid.
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2.1.4.3.3 There will be a need to install the necessary cables and equipment to facilitate
the temporary connection to the distribution network. The customer pays
outright costs for the cables and a monthly hiring charge for the use of the
equipment (including the cost of insuring the equipment) during the term
for temporary connection.
2.1.5 Provision Of Substation
2.1.5.1 When an application for load connection necessitates the provision of a
substation (See Appendices 9 & 10), a site must be provided and a substation
constructed by the customer at its own cost.
2.1.5.2 The customer is advised to site the substation at an inconspicuous location,
away from the main entrance of the development and major public roads.
The customer is also encouraged to harmonise, blend and integrate the
substation with its development.
2.1.5.3 PowerGrids officers and vehicles will have full and unrestricted access to
the substation.
2.1.6 Types Of Service Connection Cables
The types of cables for service connection is shown in Appendix 36. In the
event that the customer is required to supply and install the cables, the
customers LEW has to seek consent from PowerGrid if the cables are different
from the list shown in Appendix 36.
2.2 TRANSMISSION CONNECTION
2.2.1 Consultation
2.2.1.1 A customer may choose to seek preliminary comments from PowerGrid via
the connection consultation process before submitting a formal application.
This practice is encouraged as incorporating PowerGrids requirements in a
developers preliminary proposal would expedite the application process at
a later stage.
2.2.1.2 To initiate the connection consultation process, the customer has to submit
the Consultation Form (Appendix 2) through an LEW to PowerGrid.
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2.2.2 Application
The following are steps in the application for service connection:
2.2.2.1 The customer submits the Application Form (Appendix 1) through an LEW
to SPSL.
2.2.2.2 A connection proposal, duly endorsed by the PSO, is given to the customer.
It outlines the connection scheme, connection voltage, connection equipment
and facilities required of the customer and the estimated connection charges.
PowerGrid endeavors to respond to the customer, through SPSL, within 60
business days and 100 business days for 66kV connections and 230kV
connections respectively.
2.2.2.3 Where the application requires the provision of an EHV substation, the
customer must adhere to the general requirements attached in Appendix 17.
2.2.2.4 Once the customer acknowledges acceptance of PowerGrids connection
proposal , PowerGri d proceeds to execute the Consumer Connecti on
Agreement through SPSL. The Agreement contains an offer letter, the standard
terms and conditions associated with the connection and an estimation of
the connection charges.
2.2.3 Lead-Time For Application Of Transmission Connection
2.2.3.1 The timely provision of electricity supply to a development involves the
joint efforts of SPSL, PowerGrid, and the customer and their agents, such as
the LEW. While SPSL and PowerGrid will make every effort to engineer and
implement the connection scheme, it is at the same time essential for the
new customers and their agents to co-operate via timely submission of
applications and plans, timely acceptance of the terms and conditions of
connection and compliance with the necessary PowerGrid or Transmission
Code requirements.
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2.2.3.2 As a guide for the customer and their agents, the normal lead-times for the
events leading to the energisation of 66kV service connections are listed in
the box below. The actual lead-time to energisation may vary for each
connection, depending on the actual service cable length and the progress
of intermediate events leading to completion of service connection works.
Customers will be informed accordingly either at the point of application or
at any time a review is required. For 230kV service connections, the customer
will be informed of the lead-time only at the point of application.
NORMAL LEAD-TIME FOR ENERGISATION OF 66kV SERVICE CONNECTION
New 66kV Connection
New 66kV Connection from New 66kV Substation
from PowerGrids Provided by Connection
Events Existing Substation Applicant
From day of execution
of Consumer Connection 21 months 26 months*
Agreement to energisation
of service connection
Note:
* The customer is required to handover the substation 8 months prior to target date of
energisation of service connection.
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Transm ission C harges
3.1 CONSUMER CONNECTION AGREEMENT
3.1.1 All customers are required to enter into a Consumer Connection Agreement
with PowerGrid and to pay Use of System (UOS) charges. Customers having
a direct connection to the transmission system must also pay a service
connecti on charge. For non-contestabl e customers, the Connecti on
Agreement is part of the Supply Agreement.
3.1.2 The Consumer Connection Agreement for customers taking HV supply at
6.6kV/22kV or EHV supply at 66kV/230kV will, inter alia, state the Contracted
Capacity, which is deemed to be the requirements for a period of five years.
Customers cannot reduce their Contracted Capacity until the expiration of
the 5-year period or additional 5-year period. Further, a customer who
terminates the supply agreement during the 5-year period or additional 5-
year period will be required to pay PowerGrid through SPSL/Retailer, the
Contracted Capacity Charge for the unexpired portion of the 5-year period.
3.1.3 UOS charges are payments for the use of the transmission services. The UOS
charges are paid for electricity consumption at each metered intake supply
point in accordance with the voltage at which a customer receives the
electricity supply.
3.1.4 In the case of HV and EHV supply to multi-metered premises, the landlord
has to enter into a Connection Agreement for the network capacity required
for his own load only i.e. supply for common services, etc.
Transm ission Charges 3
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3.2 USE OF SYSTEM (UOS) CHARGES FOR NON-CONTESTABLE CUSTOMERS
3.2.1 UOS charges for non-contestable customers are included in the electricity
tariffs offered by SPSL. The types of tariffs currently available are for low
tension (LT: 400V/230V), high tension (HT: 22kV and 6.6kV) and extra high
tension (EHT: 66kV).
3.2.3 Low Tension (LT) Supply
LT customers pay charges based only on energy (kWh units) supplied to an
installation. The supply is charged at a flat rate for each kWh delivered at
each metered intake supply point.
3.2.4 High Tension (HT)/Extra High Tension (EHT) Supply
HT and EHT customers pay charges calculated from tariffs based on the
Contracted Capacity Charge, Usage Charge, Uncontracted Capacity Charge
and Reactive Power Charge.
3.2.4.1 The Contracted Capacity Charge payable by customers to SPSL is based on
kW Contracted Capacity. The Contracted Capacity Charge is calculated as
follows:
Contracted Capacity Charge = Customers Contracted Capacity x
Contracted Capacity Rate
3.2.4.2 The Usage Charge payable by the customers to SPSL is based on kWh of
electricity supplied. The Usage Charge is calculated as follows:
3.2.4.2.1 For Peak Period
Usage Charge = kWh consumed during the Peak Period x Peak Period Rate
3.2.4.2.2 For Off-Peak Period
Usage Charge = kWh consumed during the Off-Peak Period x
Off-Peak Period Rate
3.2.4.3 The Uncontracted Capacity Charge, which is based on the customers excess
kW demand, is payable if in any month the customers actual kW maximum
demand exceeds its Contracted Capacity. The Uncontracted Capacity Charge
is calculated based on the following:
Uncontracted Capacity Charge =(kW maximum demand Contracted
Capacity) x Uncontracted Capacity Rate
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3.2.4.4 The Reactive Power Charge, which is based on the customers excess kVArh,
is payable if in any month the customers kVArh consumption exceeds 62%
of its kWh consumption. The Reactive Power Charge is calculated based on
the following:
Reactive Power Charge =(kVArh 62% of kWh) x Reactive Power Rate
3.3 USE OF SYSTEM (UOS) CHARGES FOR CONTESTABLE CUSTOMERS
Contestable customers pay UOS charges for transmission services at each
metered intake supply point in accordance with the voltage at which the
customers receive the electricity supply.
UOS charges are subject to change and these changes will be published by
PowerGrid from time to time.
3.3.1 Low Tension (LT) Supply
LT supply is metered on energy (kWh units). LT supply for contestable
customers attract UOS charges based onl y on energy suppl i ed to an
installation. The supply is charged at a flat rate for each kWh delivered at
each metered intake supply point.
3.3.2 High Tension (HT), Extra High Tension (EHT) And
Ultra High Tension (UHT: 230kV and above) Supply
For HT, EHT and UHT supply, each metered intake supply point attracts its
own UOS charges as follows:
a) a Contracted Capacity Charge,
b) a Peak Period Charge,
c) an Off-Peak Period Charge,
d) a Reactive Power Charge, and
e) (i) an Uncontracted Capacity Charge, and
(ii) an Uncontracted Standby Capacity Charge (only for customers with
embedded generation who opt to cap their demand drawn from the
network).
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3.3.2.1 Contracted Capacity Charge
3.3.2.1.1 The Contracted Capacity Charge is a monthly charge for the Contracted
Capacity at each metered intake supply point of a customer. The Contracted
Capacity of a metered intake supply point is the total supply capacity in kW
requested by the customer.
3.3.2.1.2 For a new supply, the Contracted Capacity is deemed to be the customers
requirement for a binding period of 5 years. This period starts from the target
date or the date PowerGrids plant and equipment, except for the service
cable, are available to provide such Contracted Capacity, whichever is the
later.
For new HT, EHT and UHT supply, the minimum Contracted Capacity for
each metered intake supply point shall be as follows:
HT with 1 or 2 feeders 1,700kW
HT with 3 or more feeders 12,750kW
EHT 25,500kW
UHT 85,000kW
For new supply, a request may be made for intermediate steps before the full
Contracted Capacity is implemented during the first year of the 5-year binding
period. The first step will be at least one quarter of the customers full
Contracted Capacity at each metered intake supply point.
3.3.2.1.3 After the 5-year period, the Contracted Capacity at each metered intake supply
point may be reduced subject to the following minimum values:
HT with 1 or 2 feeders 850kW
HT with 3 or more feeders 6,375kW
EHT 12,750kW
UHT 42,500kW
Any revision of the Contracted Capacity after the 5-year period will apply
for a minimum binding period of 1 year.
3.3.2.1.4 For a new development with landlord and tenants, the supply capacity
required by the landlord himself must meet the minimum values set out in
3.3.2.1.2 and 3.3.2.1.3 above in order for the landlord to qualify for HT or
EHT supply.
3.3.2.1.5 Upward revision of the Contracted Capacity may be allowed during the
validity of the binding period of 5 years or 1 year of the Contracted Capacity.
The revised Contracted Capacity in such cases apply for the remainder of
the 5-year period or for a minimum period of 1 year, whichever is the greater,
provided PowerGrid is not required to install new or additional equipment.
Downward revision during a binding period will not be allowed.
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3.3.2.1.6 A customer whose revised contracted capacity requires PowerGrid to install
new or additional equipment, will be considered as receiving a new supply
with a new 5-year binding period.
3.3.2.2 Peak Period Charge
The Peak Period Charge payable is the monthly charge based on the energy
(kWh units) supplied to an installation during the peak period from 7.00am
to 11.00pm in that month.
3.3.2.3 Off-Peak Period Charge
The Off-Peak Period Charge payable is the monthly charge based on the
energy (kWh units) supplied to an installation during the off-peak period
from 11.00pm to 7.00am in that month.
3.3.2.4 Reactive Power Charge
The Reactive Power Charge is a monthly charge for the installations excess
kVArh consumption. The excess kVArh is the difference by which the
installations kVArh consumption drawn from the network in that month is
greater than 62% of its kWh consumption drawn from the network in the
same month.
3.3.2.5 Uncontracted Capacity Charge
3.3.2.5.1 The Uncontracted Capacity Charge applies to customers without embedded
generation. It also applies to existing HT and EHT customers with embedded
generation whose monthly maximum demand in kW is the maximum
summated demand in kW in the month, determined by summating the kW
demand from the network and the kW output from embedded generation.
3.3.2.5.2 The Uncontracted Capacity Charge is a monthly charge for the Uncontracted
Capacity consumed. The Uncontracted Capacity is the capacity in kW by
which the maximum demand in kW (measured by the half-hour integration
meter) exceeds the Contracted Capacity at that metered intake supply point,
and is chargeable for the month concerned.
3.3.2.5.3 The Uncontracted Capacity Charge is also applicable to existing HT and
EHT customers with embedded generation who opt to cap their power
demand in kW drawn from the network in the event that the maximum
demand in kW (measured by the half-hour integration meter) exceeds the
Contracted Capacity. The Uncontracted Capacity for these customers is
limited to 20% of the Contracted Capacity.
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3.3.2.6 Uncontracted Standby Capacity Charge
3.3.2.6.1 The Uncontracted Standby Capacity Charge applies to existing customers
with embedded generation who opt to cap their power demand in kW drawn
from the network. This charge applies to such customers in the event that
their demand in kW exceeds 120% of the Contracted Capacity at that metered
intake supply point due to their failure to cap the kW demand drawn from
the network.
3.3.2.6.2 The Uncontracted Standby Capacity Charge is a monthly charge for the
Uncontracted Standby Capacity consumed. The Uncontracted Standby
Capacity is the capacity in kW by which the demand in kW (measured by
the power meter) exceeds 120% of the Contracted Capacity at that metered
intake supply point for a duration of more than 10 seconds due to their
failure to cap the kW demand drawn from the network, and is chargeable for
the month concerned.
3.4 TEMPORARY SUPPLY
Temporary supply is available only at LT and HT voltages for temporary
civil engineering and building construction sites. The UOS charges applicable
for the LT and HT temporary supply will be as in 3.2 and 3.3.
For temporary supply at HT, the Contracted Capacity applies for a minimum
binding period of 1 year. Upward revision of the Contracted Capacity may
be allowed during the validity of the binding period of the Contracted
Capacity. The revised Contracted Capacity in such cases apply for a minimum
period of 1 year, provided PowerGrid is not required to install new or
additional equipment. Downward revision during a binding period will not
be al l owed. A customer whose revi sed Contracted Capaci ty requi res
PowerGrid to install new or additional equipment is considered as receiving
a new temporary supply.
3.5 SUPPLY FOR POWER STATIONS
The UOS charge for transmission services provided to a power station which
draws electricity supply through the generation connection is based only on
energy (kWh) units. The UOS charge applies to the sum of the net kWh
i mported hal f-hourl y i nto the power stati on through the generati on
connection and is based on the connection voltage.
The UOS charge for transmission services provided to a power station which
draws electricity supply through a separate service connection is the same
as for a load and attracts a Contracted Capacity Charge based on the service
connection voltage.
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Energisation A nd Turn-O n Procedures
The term energise, in the case of a customers installation that is directly connected to
the transmission system, refers to the closing of a circuit breaker or other isolating
device that is owned and controlled by PowerGrid. Energisation, de-energisation
and re-energisation and all grammatical variations of the term shall be interpreted
accordingly.
Arrangements need to be made with SPSL for energisation of the service connection
and turn-on of a customers electrical installation. This is taken care of by the LEW. The
following are arrangements needed by type of premises:
4.1 NON-DOMESTIC PREMISES (LOAD REQUIREMENT NOT EXCEEDING
45kVA), AND DOMESTIC PREMISES WHERE ELECTRICAL INSTALLATIONS
ARE PROVIDED AND PRE-INSPECTED OR PREVIOUSLY INSPECTED AND
ENERGISED
4.1.1 This category includes all new HDB apartments and dwelling units in some
private residential developments where electrical installations are provided
and inspected in advance. It also includes non-domestic premises (supply
capacity not exceeding 45kVA) and domestic premises where the existing
electrical installations and service connections are intact and only the supply
is required to be re-energised.
4.1.2 The customer has to open an account with SPSL for electricity service
connection (See 4.9.2).
4.1.3 The customer is given an appointment date for turn-on of service connection.
This appointment date is normally the 4th working day from the date the
account i s opened. For el ectri cal safety reasons, the customer or hi s
representative must be present at the premises for the turn-on of electricity
service connection.
Energisation and
Turn-O n Procedures 4
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4.2 PREMISES WITH DIRECT CONNECTION
FROM POWERGRIDS TRANSMISSION SYSTEM
4.2.1 Domestic Premises (all load requirements)
4.2.1.1 The customer opens an account with SPSL, if an account has not already
been opened (See 4.9.2).
4.2.1.2 Upon completion of the electrical installation and receipt of notification
from PowerGrid on energisation/readiness of the service connection, the
LEW books an appointment with SPSL for inspection and turn-on of the
customers i nstal l ati on. Thi s i s done by submi tti ng the Certi fi cate of
Compliance (COC) form (See 4.7.1).
4.2.1.3 The electrical installation is connected to PowerGrids transmission system
on the scheduled turn-on date if the electrical installation is safe to receive
electricity supply. The LEW must be present during inspection of the
electrical installation by SPSL. For electrical safety reasons, the customer or
his representative must also be present at the premises for the turn-on of
electricity service connection. A PASS Inspection Report is issued by SPSL
on-site upon successful turn-on of the customers installation.
4.2.2 Non-Domestic Premises
4.2.2.1 Load Requirement Not Exceeding 45kVA
4.2.2.1.1 The customer opens an account with SPSL, if this has not already been done
(See 4.9.2).
4.2.2.1.2 Upon completion of the electrical installation and receipt of notification from
PowerGrid on energisation of the service connection, the LEW books an
appointment with SPSL for inspection and turn-on of the electrical installation.
This is done by submitting the COC form (See 4.7.1).
4.2.2.1.3 The electrical installation is connected to PowerGrids transmission system
on the scheduled turn-on date if the electrical installation is safe to receive
electricity supply. The LEW must be present during inspection of the
electrical installation by SPSL. For electrical safety reasons, the customer or
his representative must also be present at the premises for the turn-on of
electricity service connection. A PASS Inspection Report for the customers
installation is issued by SPSL on-site upon successful turn-on.
4.2.2.2 Load Requirement Exceeding 45kVA
4.2.2.2.1 The customer submits an application for an account (See 4.9.2) and meter
installation Form CS/6 (Appendix 22.1) to SPSL if this has not already been
done, and applies for a licence from Energy Market Authority (EMA) to use
or operate an electrical installation.
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4.2.2.2.2 Upon completion of the electrical installation and receipt of notification
from PowerGrid on the readiness of service connection, the LEW must inspect
and test the electrical installation before booking an appointment with SPSL
for energisation of service connection by PowerGrid. This is done by
submitting the COC form (See 4.7.1).
4.2.2.2.3 The LEW in charge of the design, installation and supervision of work has to
arrange for the LEW in charge of the operation of the installation and the
customer (or his representative) to be present during the energisation.
4.2.2.2.4 The electrical installation is connected to PowerGrids transmission system
on the scheduled energisation date if the electrical installation is safe to
receive electricity supply. The LEW must issue a Certificate of Readiness
(COR) form (See 4.7.2) to PowerGrid at site, prior to energisation of the service
connection.
4.2.2.2.5 Upon successful energisation of service connection to the customers
i nstal l ati on from PowerGri ds di rect connecti on, al l parti es are to
acknowledge on the Statement of Turn-On of Electricity (See 4.7.3).
4.3 BOOKING AN APPOINTMENT
4.3.1 Before booking an energisation and turn-on appointment, the LEW must
ensure the following:
4.3.1.1 Metering requirements, where applicable, have been submitted and formal
clearance has been given by PowerGrids Meter Section. All necessary meters
have been installed.
4.3.1.2 The customers main incoming switchgear, protection system and earthing
system have been successfully tested by an LEW. The HV metering panel
has been provided, and testing of the metering current transformers/voltage
transformers have been carried out and meters installed by Meter Section.
4.3.1.3 The service cables to the installation are ready to be energised.
4.3.1.4 An utilities account has been opened, a Connection Agreement has been
signed, and a security deposit for UOS has been paid by the customer.
4.3.1.5 A licence to use or operate the electrical installation, where applicable, has
been obtained from EMA.
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4.3.1.6 For service connection at a system voltage level of 66kV and above, the final
clearance for the EHV switching procedure must be obtained from the PSO
prior to the confirmation of the first energisation date.
Notes:
(1) The EHV switching procedure must be jointly prepared and endorsed
by the LEW, who is authorised to perform EHV switching (at customers
installation), and PowerGrids Project Engineer.
(2) For 66kV and above, the LEW must submit the COC form to PowerGrids
Project Engineer.
4.3.2 Making An Appointment For Energisation Of Service Connection Direct
From PowerGrids Transmission System
4.3.2.1 Load Requirement Not Exceeding 45kVA
To make an appointment to turn-on electricity supply, the LEW or his
representative submits the letter confirming the energisation of service
connection and the COC, and pays an inspection fee to SPSL. This is done
in person at Supply Application Section of SPSL at 111 Somerset Road,
#01-10 Customer Services Centre.
4.3.2.2 Load Requirement Exceeding 45kVA Up To 22kV Supply Voltage
An appointment for energisation of electricity service connection of load
requirements greater than 45kVA and up to 22kV supply voltage can be made
as follows:
To make an appointment in person to energise the service connection, the
LEW or his representative submits the letter confirming the readiness of
service connection and the COC to SPSLs Installation Section at 7th storey,
St James District Office, Telok Blangah Road.
Alternatively, the LEW can submit the Application for Appointment for
Energisation of the Service Connection By Fax (Appendix 23) to Installation
Section.
4.3.2.3 A lead-time of 14 business days is required for the LEW to request for the
energisation of PowerGrids service connection and turn-on of the customers
installation.
4.3.2.4 Energisation of service connection involves several parties. An officer at
SPSLs Installation Section co-ordinates with PowerGrid for the energisation
of the service connection for supply taken directly from PowerGrids
transmission system.
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4.4 PREMISES WITH INDIRECT CONNECTION
(I.E. PREMISES IN A MULTI-METERED DEVELOPMENT)
4.4.1 Load Requirement Not Exceeding 45kVA
4.4.1.1 The customer opens an account with SPSL (See 4.9.2) if this has not already
been done.
4.4.1.2 The customer submits an Application for Inspection of Electrical Installation
(Appendix 8) to SPSL through the LEW together with a Letter of Consent
from the Landlord/Management Corporation or HDB (Appendices 3 and 4).
The LEW can also book an appointment for inspection of the electrical
installation at the time of submission of the application and, in the meantime,
proceed to carry out the wiring/extension work. The procedure of booking
an appointment is as in 4.3.2.1 above.
4.4.1.3 The LEW is responsible for arranging the energisation of the service
connection with the relevant party responsible where connection is taken
via the landlords switchboard such as in HDB, JTC or other private multi-
metered buildings.
4.4.1.4 Service connection will be turned-on on the scheduled inspection date if
the electrical installation is safe to receive electricity supply. The LEW must
be present during the inspection. A PASS Inspection Report for the customer
installation will be issued on-site upon successful turn-on. The LEW must
issue a Statement of Turn-On of Electricity and this must be acknowledged
by the relevant parties.
4.4.2 Load Requirement Exceeding 45kVA (Multi-Metered Building Scheme)
4.4.2.1 When the premises is ready for installation of meters, the LEW/customer
must submit an Application Form for Account Opening with Security Deposit
payable, together with Form CS/7 (Appendix 22.2), and sign an agreement
with SPSL.
4.4.2.2 The LEW shall proceed to liaise with PowerGrids Meter Section to have the
meters installed.
4.4.2.3 SPSL then advises the LEW to proceed to apply to EMA for an EI Licence
before the supply is turned on.
4.4.2.4 After the meters are installed, the LEW must submit a copy of the COC and
confirm the activation date (which is the proposed turn-on date) with SPSL.
4.4.2.5 The LEW is responsible for arranging the energisation of the service
connection with the relevant party where the connection is taken via the
landlords switchboard such as HDB, JTC or private multi-metered
buildings.
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4.4.2.6 The landlords LEW will issue the Statement of Turn-On of Electricity upon
successful turn-on.
4.4.2.7 Contestable customers must subscribe and install a dedicated telephone line
per metering point to be used for the purpose of remote metering.
4.5 MODIFICATION TO AN EXISTING ELECTRICAL INSTALLATION
4.5.1 Modification work (e.g. extension, rewiring, shifting of meter) carried out to
an existing electrical installation where a licence to use or operate is not
required, must be inspected by SPSL before the new/modified portion of the
wiring can be used.
4.5.2 The LEW must submit an application for inspection (Appendix 8) by SPSL
for the modified electrical installation.
4.6 LICENCE TO USE OR OPERATE AN ELECTRICAL INSTALLATION
4.6.1 For service connection to non-domestic premises, residential buildings and
condominiums with an approved load greater than 45kVA, and temporary
connection for building construction and engineering work, irrespective of
connection load, the customer must obtain a licence from EMA to use or
operate the electrical installation.
4.6.2 It must be noted that PowerGrid cannot energise the service connection until
such a licence is issued to the customer.
4.7 CERTIFICATES AND STATEMENTS
FOR FIRST ENERGISATION OF SERVICE CONNECTION
4.7.1 Certificate Of Compliance (COC)
4.7.1.1 The LEW must ensure that the electrical installation complies with the
requirements of the Electricity Regulations, Singapore Standards CP5,
relevant technical requirements and all other applicable standards. This
compliance must be made in the COC form (Appendix 37). The COC form
must be submitted to PowerGrid through SPSL when requesting for an
energisation appointment.
4.7.2 Certificate Of Readiness (COR)
4.7.2.1 The LEW has to certify the readiness of the installation. This certification
must be made in the COR form (Appendix 21). The LEW must hand over the
COR form to PowerGri ds Project Offi cer on the actual date of fi rst
energisation.
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4.7.3 Statement Of Turn-On Of Electricity
4.7.3.1 Immediately after the successful first energisation of the service connection,
PowerGrid will issue a Statement of Turn-On of Electricity (Appendix 38).
All parties are to acknowledge by signing the form. The completed form
will be given to all parties and a copy forwarded to SPSL.
4.8 LEAD-TIME FOR APPLICATION FOR SERVICE CONNECTION
4.8.1 The timely provision of electricity supply to a development involves the
joint efforts of SPSL, PowerGrid, and the customer and his agents, such as
the LEW. While SPSL and PowerGrid will make every effort to engineer and
implement the connection scheme, it is at the same time essential for the
new customers and their agents to play their part such as the early submission
of applications and plans, the acceptance of terms and conditions of
connection including making the necessary payments and the compliance
of the necessary PowerGrid or Transmission Code requirements.
4.8.2 As a guide for the customer and his agents, the normal lead-times for the
various events are listed on the following page. Depending on the progress
and completion time of precedent events, the actual completion dates of
events leading to the energisation of the service connection may need to be
reviewed and adjusted.
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NORMAL LEAD-TIME FOR ENERGISATION OF SERVICE CONNECTION UP TO 22kV
Installation with Existing
Service Connection not Non-domestic
Exceeding 45kVA or Installation with New Connection New Connection
Domestic Premises Existing Service from PowerGrids from New
Pre-inspected Inspection Connection Low Voltage Mains Substation
Installation or Required Exceeding 45kVA
Reconnection
Submission of NA 14 days* 4 weeks 3 months 6 months
application to SPSL
Submission of substation NA NA NA NA 5 1/2 months
plans to PowerGrid
Acceptance of Agreement 4 days 14 days 14 days 7 weeks** 11 weeks*
Handover of substation NA NA NA NA 10 weeks*
to PowerGrid+
Opening of account
with SPSL 4 days 14 days 14 days 14 days 11 weeks
Arrangements to inspect NA 10 days NA NA NA
customers installation
(not exceeding 45kVA)
by SPSL
Application to EMA NA NA 10 days 10 days 10 days
for licence to use or
operate an electrical
installation
Request for energisation NA NA 14 days 14 days 14 days
of service connection
* These are critical events. Failure to adhere to the schedule may result in delay in the turn-on of
supply.
** For connection by underground cable, PowerGrid will have to seek road opening approval from
the relevant authorities before cable work can commence. The approval process usually takes about
3 weeks. Depending on the length of cable to be installed, supply will normally be available 4 to 6
weeks from the date customers premises is ready to receive the service cable.
+ Energisation of service connection will normally take place within 10 weeks of handing over of
substation. This lead-time may vary from case to case, depending on the customers schedule.
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4.9 NOTES TO BE READ IN CONJ UNCTION WITH APPLICATION PROCEDURE
4.9.1 Licensed Electrical Worker
4.9.1.1 Under the Electricity Act, the design and installation of an electrical
installation may be undertaken by the following categories of LEWs:
Supply Capacity of
Electrical Workers Installation Voltage
Electrician Not exceeding 45kVA Not exceeding 1,000V
Electrical Design: Not exceeding 1,000V
Technician Not exceeding 150kVA
Install:
Not exceeding 500kVA
Electrical Engineer No limit No limit
4.9.1.2 The customer should appoint an LEW appropriate to the capacity and voltage
of the proposed installation, and inform SPSL immediately of any change of
LEW during the course of the project.
4.9.2 Opening An Account
4.9.2.1 Before supply to an installation can be turned-on, the customer must open
an account with SPSL. An application to open an account for electricity
supply can be made either personally, through the post or Internet. A sample
of the Application(s) for the Supply of Water, Electricity and/or Gas and
GIRO forms to be completed are shown in Appendix 6 and Appendix 7
respectively.
4.9.2.2 Application in person can be made at SPSLs Customer Services Centre, Upper
First Storey, 111 Somerset Road #01-10, Singapore Power Building; or at
SPSLs Application Counter at Woodlands Civic Centre #02-06, 900 South
Woodlands Drive, Singapore 730900.
Applications through the post should be addressed to:
Manager (Customer Services Branch)
SP Services Ltd
P O Box 341 Orchard Post Office
Singapore 912312
4.9.2.3 The following documents must be shown at the time of application in person:
4.9.2.3.1 Identity Card/Passport of owner/tenant/authorised signatory*
4.9.2.3.2 Copy of Business/Company Registration Certificate*
4.9.2.3.3 Documentary proof of occupation of premises, e.g. rent receipt or sales letter
from HDB confirming the purchase of the premises
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4.9.2.3.4 Bank account book to effect GIRO deduction from the account
* applicable for account in companys/organisations name
4.9.2.4 For applications submitted through the post, copies of the above-mentioned
documents must be enclosed.
4.9.2.5 An initial deposit is payable on opening an account. Customers may call the
Customer Enquiry Auto-Link (U-Link) at 1800-7380038 to enquire about the
opening and closing of accounts.
4.9.2.6 For domestic premises, the deposits are as follows:
TYPE OF PREMISES DEPOSIT
GIRO Non-GIRO
Customers Customers
HDB 1/2 rooms S$ 40 S$ 60
HDB 3/4/5 rooms S$ 70 S$ 100
HDB Executive/HUDC/Terrace S$ 100 S$ 150
Private Apts/Semi-Detached/Condo S$ 150 S$ 250
Bungalow/Penthouse/Townhouse S$ 250 S$ 400
4.9.2.7 The deposit for non-domestic premises varies according to the electricity
load required, the estimated water consumption, the floor area and type of
operations. For enquiry on the amount of deposit required, customers can
call 1800-2356841.
4.9.3 Handover Of Completed Substation
4.9.3.1 The handover of substation to PowerGrid for installation of equipment is a
key event, which determines the earliest date when supply can be made
available.
4.9.3.2 One week prior to the intended handover of the substation, the LEW must
submit a Request to Handover Substation form (Appendix 5) to Senior
Manager (Customer/Distribution Projects), PowerGrid. Before this is done,
the LEW must ensure that the customer/developer has accepted the terms
and conditions of connection, including the payment of necessary charges.
4.9.3.3 It must be emphasised that PowerGrid will take over the substation only
when it is completed in accordance with plans and specifications approved
by PowerGrid and the relevant authority. It is particularly important that the
access to the substation must be clear and passable for transportation of
heavy equipment.
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4.9.3.4 Floor frames are needed for some types of switchgear. Prior to the final rendering
of the switchroom floor, the LEW is to notify the project engineer-in-charge to
make arrangements for the floor frame to be installed, if it is necessary.
4.9.3.5 Requirements on handover of a completed transmission substation are given
in General Requirements for EHV Substation (Appendix 17).
4.9.4 Installation Of Current Transformer Operated Meters
4.9.4.1 For supply capacity exceeding 75kVA, current transformer operated meters
are required. The LEW is required to provide the three metering current
transformers and a pre-wired metering panel on the customers intake
switchboard complete with Meter Section approved type test block, 6A 10kA
MCB and pilot lamps and metering cables to the busbars.
4.9.4.2 On the day the LEW arranges with SPSL for a date for energisation of the
service connection, he should also bring the letter of appointment for
energisation of the service connection to Meter Section to arrange for the
installation of meters.
On the appointed day of meter installation, the LEW or his representative
must be present to provide a 230V 13A single phase supply for testing of the
meters.
4.9.5 Procedure For Application For Licence To Use
Or Operate An Electrical Installation
4.9.5.1 General
4.9.5.1.1 Under the Electricity Act, electrical installations in non-domestic premises,
residential buildings and condominiums with an approved load greater than
45kVA are required to be licensed. In addition, certain premises classified
as engaging in dangerous trades, are also required to be licensed even though
they may have approved electrical loads not exceeding 45kVA.
4.9.5.1.2 Application forms for electrical installation licences are available at Energy
Market Authority, 111 Somerset Road, #11-06, Singapore Power Building,
Singapore 238164, or via the EMA website at www.ema.gov.sg.
4.9.5.2 Conditions For The Issue Of The Licence
4.9.5.2.1 Conditions for the issue of the electrical installation licences are governed
by EMA.
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4.9.5.2.2 The minimum grade of LEW required to take charge of the electrical or supply
installation is determined by the total approved load. The grades of Electrical
Workers and their authorisation conferred under the respective EMA licences
are:
Grades of Authorisation
Electrical Workers Design Maintain/Operate
Electrician 45kVA 45kVA
Technician 150kVA 500kVA
Engineer No limit Subject to licence conditions
4.9.5.3 Submission Of EMA Forms
4.9.5.3.1 The relevant application forms are to be completed and submitted to EMA
with the necessary licence fees through the LEW in charge of the electrical
installation. This must be done no later than 2 weeks before the date of the
turn-on of the electricity supply.
4.9.5.3.2 The validity of the licence is for a period of 12 calendar months.
4.9.6 Procedure For De-Energisation/Disconnection Of Service Cables
4.9.6.1 De-Energisation Of Service Cable For Maintenance Purpose
4.9.6.1.1 The LEW who needs to de-energise an existing service cable for the purpose
of maintenance or upgrading of the customers installation must submit the
ADRE form to PowerGrid 7 business days in advance (Appendix 19).
4.9.6.1.2 The SDRE form (Appendix 20) must be used to ensure the service cable is
safely isolated after de-energisation and fit to be energised before re-
energisation. Both PowerGrids officer in-charge and the LEW must duly
complete and sign Part I and Part II of the form after de-energisation and
before re-energisation of the service cable respectively.
4.9.6.2 Disconnection Of Service Cables Upon Closing Of Account
4.9.6.2.1 The customer must close the account with SPSL.
4.9.6.2.2 The customer must write to SPSL for disconnection of service cables and
removal of electricity meters.
For Contestable Customers, an advance notice of 14 business days is required.
For Contestable Customer, the LEW must duly complete and sign Part III of the SDRE
form.
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C ustom ers Installation R equirem ents
5.1 REQUIREMENTS FOR HV AND LV CONNECTION (22kV AND BELOW)
5.1.1 Short-Time Withstand Current Ratings Of Switchgear
5.1.1.1 For electrical installations taking electricity supply directly from PowerGrids
network, the customers main supply incoming switchgear must comply with
the following short-time withstand current ratings:
5.1.1.1.1 For supply at 22kV
25kA for 3 sec
5.1.1.1.2 For supply at 6.6kV
20kA for 3 sec
5.1.1.1.3 For supply at low voltage:
a) Single-Phase 230V
6kA for supply capacity up to 15kVA
9kA for supply capacity more than 15kVA and up to 23kVA
b) 3-Phase 400V
9kA for supply capacity up to 75kVA
25kA, 3 sec for supply capacity more than 75kVA and up to 180 kVA
36kA, 3 sec for supply capacity more than 180kVA
Note: The 3-second duration is not applicable to switchgear incorporating
direct acting tripping devices.
5.1.1.2 For electrical installations taking electricity supply from the landlords or
management corporations electrical installations, the LEW in-charge must
ensure that the customers main supply incoming switchgear is capable of
withstanding the prospective short-circuit current at the connection point.
Custom ers
Installation Requirem ents 5
L 36
5.1.2 Protection Requirements
5.1.2.1 Typical schemes and the protection requirements for a customers HV and
LV main incoming switchgear taking electricity supplies from PowerGrids
system are shown in Appendix 18. It must comply in general to conditions
as set out in the Transmission Code, Section 6.3 and Appendix F3.
5.1.2.2 For electrical installations taking electricity supply from the landlords or
management corporations electrical installations, advice on protection
requirements must be sought from the LEW responsible for the respective
licensed electrical installation.
5.1.2.3 Protection Requirement For 22kV And 6.6kV Customer Connection
The main protection for the 22kV and 6.6kV customer connection must be
pilot wire differential protection. The current transformers of ratio 500/5
must be of Class X and the CT secondary star-point must be towards the
protected line. The standard overcurrent/earth fault setting for the incomer
is shown in Appendix 18.
The LEW of the customer installation is responsible for:
5.1.2.3.1 proper specification, setting/commissioning of the protection system at the
customer incomers, and
5.1.2.3.2 ensuring that the 22kV circuits within the customer installation are equipped
with unit protection for fast fault clearance, inclusive of fault at cable
terminations.
5.1.2.4 Protection Requirement For LV Supply Connection
The customer's incoming circuit breaker shall be set according to the approved load. For
approved load exceeding 300A, external overcurrent relays of IDMTL or DTL characteristics
and earth fault protection (DTL) must be provided at the incoming switchgear. The current
transformer must be of Class 5P10, 15 VA or better. Details are shown in Appendix 18.
5.1.2.5 Every low voltage electrical installation of supply capacity exceeding 75
kVA must be provided with short-circuit protection in the form of direct
acting trip element at the incoming switchgear as follows:
Approved Load Direct Acting Trip Setting
Above 1500A Up to 4,500A
400A <Approved Load <1,500A Up to 3,200A
260A <Approved Load <400A Up to 2,400A
200A <Approved Load <260A Up to 2,000A
200A and below Up to 1,200A
Alternatively, a backup HRC fuse may be used in place of direct acting trip.
L 37
5.2 REQUIREMENTS FOR EHV CONNECTION (230kV AND 66kV)
5.2.1 Short-Time Withstand Current Ratings Of Switchgear
For electrical installations taking electricity supply directly from PowerGrids
network, the customers main supply incoming switchgear must comply with
the following short-time withstand current ratings:
5.2.1.1 For 230kV switchgear
63kA (1 sec)
5.2.1.2 For 66kV switchgear
40kA (3 sec)
5.2.2 Protection Requirement For 66kV And 230kV Customer Connection
5.2.2.1 General
5.2.2.1.1 The protection system for the connections has to comply in general to the
conditions as set out in the Transmission Code.
5.2.2.1.2 All circuits connected to PowerGrids transmission network, inclusive of
busbars for 230kV and above, must be provided with unit protection for fast
fault clearance.
5.2.2.1.3 Engineering details and protection settings will be discussed with the
customer during the project implementation.
5.2.2.1.4 The relays used for a unit protection scheme, and the characteristics of its
associ ated current transformers shoul d be matched. For reason of
obsolescence or availability, the type of protection relays and the protection
schemes is subject to review and confirmation during the consultation period.
5.2.2.1.5 Wherever applicable, signalling equipment is to be provided for tele-
protection function and for end-to-end transfer of intertrip and interlock
signals.
5.2.2.1.6 Generally, the star-point of the current transformer secondary circuit must
be towards the protected object/zone.
5.2.2.1.7 Generally, the location of the current transformers for the circuit and that of
the installations busbar protection system for 230kV and above must be
overlapped across the circuit breaker to eliminate protection blind zone.
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5.2.2.1.8 Current transformers supplied for unit protection must be rated in accordance
with IEC 60044 Part 1 & 6, BS 3938. They must be adequately dimensioned
and of an accuracy class meeting the specified relays requirement. The
characteristic of the current transformers installed at both ends of the
connected circuit must be closely matched with each other to ensure stability.
5.2.2.2 The settings for the backup protection for the 66kV customer incomer must
generally be as follows:
RECOMMENDED RELAY SETTING FOR 66kV CUSTOMER INCOMER
Protection Relay General Setting
Overcurrent Protection CT Ratio Setting
Feeder Circuit (1,000/5) 150% 0.15
( 800/5) 200% 0.15
Feeder Transformer Circuit (1,000/5) 100% 0.20 Hi-Set: 27A
(for 75MVA transformer) ( 800/5) 125% 0.16 Hi-Set: 34A
Earth Fault Protection
Feeder Circuit (1,000/5) 10% 0.10
( 800/5) 15% 0.10
Feeder Transformer Circuit N/A
(for 75MVA transformer)
Notes:
The co-ordinated setting for the backup protection is applicable to the standard
protection scheme proposed for a feeder or feeder-transformer type customer
connection and is applicable to radial feed connection only (Refer to Appendix 18).
The overcurrent and earth fault setting are subject to periodic review by PowerGrid.
L 39
M etering R equirem ents
6.1 GENERAL
6.1.1 Al l meteri ng requi rements must compl y wi th EMAs Meteri ng Code.
PowerGrid will determine the location where the supply line terminates in
the premises, based on ease of accessibility to SPSL and PowerGrid personnel.
6.1.2 The developer or customer bears the cost of providing and maintaining the
meter boards, miniature circuit breakers (MCBs), isolators and wiring for
installation of meters. The meters are supplied and maintained by PowerGrid.
6.1.3 Meters can be mounted on any of the following types of meter boards:
6.1.3.1 Teak board or any hardwood board chemically treated against attacks by
termites. Plywood should not be used. The meter board must be at least
20mm thick and rigidly fixed with a minimum of 4 fixing screws.
6.1.3.2 Metal panel with nylon inserts accurately positioned to accommodate the
meter.
6.1.3.3 Glass reinforced polyester base fitted with nylon inserts accurately positioned
to accommodate the meter.
If item 6.1.3.2 or 6.1.3.3 is provided, PowerGrids Meter Section has to be
consulted on the locations of the nylon inserts.
6.1.4 The LEW must ensure that all metering requirements are complied with,
and submit, at the planning stage, all relevant drawings on meter locations,
meter board size, meter rooms, meter compartments/riser ducts/cupboard,
etc to Meter Section for approval. Sample units of each approved type of
meter compartment/riser duct/cupboard and meter board must be provided
for final inspection and approval by Meter Section before meters are installed.
M etering
Requirem ents 6
L 40
6.1.5 If the doors of centralised meter rooms, meter gate posts, meter compartments/
riser ducts/cupboards, etc are to be locked, they must be fitted with locksets
which can be opened with one of the following master keys:
6.1.5.1 Abloy master key code reference MK 911047
6.1.5.2 Chubb (Union) master key code reference G1HBG
6.1.5.3 Yale master key code reference MK48
The doors of meter rooms/compartments must be able to be opened from the
inside without the need to use a key or other devices/tools.
6.1.6 All access doors to meter rooms/compartments/riser ducts/cupboards, etc
must have a clear access opening of at least 600mm (width). The doors must
be fitted with door knobs or handles.
6.1.7 Security access systems installed in any premises must not impede access
by SPSL and PowerGrid personnel.
6.2 LOCATION OF METER
6.2.1 General
6.2.1.1 The service board accommodating PowerGrids service MCBs and meters
must be located near the termination of the service line. The meter/service
position must be easily accessible at all times to SPSL and PowerGrid
personnel for maintenance and reading of meters.
6.2.1.2 Meters must be installed in a safe location where they will not be damaged
or be a cause of danger to personnel (viz, in a clean and dry location, not
exposed to weather, mechanical damage, vibrations, extremes of temperature
or dampness).
6.2.1.3 The height of the meter on the meter board must be between 1.0m and 1.8m
above ground level, and the depth of the compartment for installation of
meters must be between 200mm and 300mm.
It is advisable that the service board is housed in an approved box of non-
combustible high-impact material to give added protection to the metering
equipment and enhance safety.
L 41
6.2.2 Grouping Of Meters
Meters must be installed outside each tenant unit for ease of meter reading,
maintenance, etc. Where this is not possible for practical reasons, meters
may be grouped together in easily accessible centralised meter rooms or
meter compartments/riser ducts/cupboards in multi-metered premises (e.g.
residential, office, shopping or industrial high-rise building/complex).
6.2.3 Meters In Meter Compartments/Riser Ducts/Cupboards
6.2.3.1 Meters are to be grouped on the same floor as the tenant units.
6.2.3.2 There may be more than one group metering location on each floor.
6.2.3.3 There must be adequate lighting in the group meter location to facilitate
meter installation/maintenance and meter reading.
6.2.3.4 Meter boards in meter compartments/riser ducts/cupboards must be such
that meters can be mounted facing the doors.
6.2.3.5 All meter compartments/riser ducts/cupboards where meters are installed
are to be clearly and permanently labelled. Tenant unit numbers on permanent
labels must be fixed adjacent to their respective meters.
6.2.3.6 Meter compartments/riser ducts/cupboards housing the meters must have
clear glass windows provided on the doors, if these are locked, for ease of
meter reading. The window for each meter must not be less than 200mm
(W) x 300mm (H) x 6mm (thickness) and must be correctly positioned in
front of where the meter is to be installed. Plastic windows and UV resistant
polycarbonates are not acceptable. Full glass doors are not acceptable.
6.2.4 Meters In Centralised Meter Rooms
6.2.4.1 The height of the meter board or panel must be such that meters can be
mounted with the highest row not exceeding 1.8m above floor level and the
lowest row not less than 1m above floor level.
6.2.4.2 There must be standing space of at least 700mm in front of the meter panel.
However, if the meters are mounted on a free-standing panel, a clearance of
700mm all round the panel is required.
6.2.4.3 The meter board or panel must be rigidly and vertically mounted. The doors
of the panel must be hinged.
6.2.4.4 The meter room must not be used as a storeroom.
L 42
6.2.5 Meters Installed In Landed Properties
6.2.5.1 The meters and servi ce cabl es must be i nstal l ed i n a weatherproof
compartment located at the gate pillar or perimeter wall. For supply capacity
up to 100A 3-phase, the technical requirements for this compartment are as
given in Appendix 24. For supply capacity greater than 100A 3-phase where
a CT-operated meter will be installed, the LEW has to submit the technical
requirements to Meter Section for approval.
6.2.5.2 If there is no gate pillar or fencing around the perimeter of the landed
properties, meters must be installed inside a weatherproof meter box/
compartment and easily accessible to SPSL and PowerGrid personnel. Meters
must not be installed inside the house.
6.3 METER/SERVICE BOARD SPECIFICATIONS (SINGLE-PHASE AND 3-PHASE
SERVICES, NOT EXCEEDING 100A PER PHASE)
The meter/service board for PowerGrids service MCBs and meters must be
as specified in Section 6.1.3 and in accordance with the drawings in
Appendices 25, 26 and 27.
6.4 WIRING, LAYOUT OF METERS, MCBS, ETC IN CENTRALISED METER
ROOMS, METER COMPARTMENTS/RISER DUCTS/CUPBOARDS
6.4.1 All wiring leading in and out of the group meter location must comply with
SS CP5. The landlords wiring must be segregated from the tenants wiring.
6.4.2 Meters are to be mounted together with their associated service MCBs/neutral
connectors such that each meter can be visually identified with its associated
service MCBs. Each meter position must be clearly labelled according to the
tenant unit number. There should be a space of 70mm between vertically
mounted meters.
6.4.3 Meters are to be mounted in neat vertical columns and/or horizontal rows.
6.4.4 Service MCBs must be sealable. MCBs must be clearly labelled according to
the tenant units served. The labelling must also correspond to the labels
used for the meters.
6.4.5 All wiring on the meter boards from service MCBs/neutral connectors to the
meters and from the meters to the customers main switches must be neatly
run on the surface horizontally and/or vertically.
L 43
6.5 SUBMISSION OF LAYOUT PLANS
The layout of the meter rooms, meter compartments/riser ducts/cupboards
together with the meter board drawings and plans of the units served, must
be submitted at the planning stage by the LEW for approval by Meter Section.
6.6 METERS FOR 3-PHASE LOW VOLTAGE CONNECTION
(EXCEEDING 100A PER PHASE)
6.6.1 Meters for connections exceeding 100A per phase are operated from metering
current transformers and are to be fixed on a pre-wired metering panel on
the customers mai n swi tchboard. However, where the l ength of the
connecting leads are not excessive, the pre-wired metering panel may, with
the prior approval of Meter Section, be wall-mounted away from the main
switchboard or in a separate meter room. The pre-wired metering panel with
Meter Section approved type test block, 6A (10kA) MCB, pilot lights and
metering cables to the busbars and the three metering current transformers,
must be provided by the customer. Drawings of the meter panel can be
obtained from Meter Section at St James District Office, Telok Blangah Road.
6.6.2 Meter Panel Compartment Specifications
6.6.2.1 Meter panels must be of mild steel of at least 1.6mm thickness or other
materials subject to approval by Meter Section.
6.6.2.2 The panels must be detachable and of a size given in Appendix 28.
6.6.2.3 The compartments must have a minimum depth of 100mm between cover
and base.
6.6.2.4 There must be openings with appropriate bushing for the meter wires.
6.6.2.5 The cover must have at least 3 hinges and be able to swing and open out at
least 90
o
.
6.6.2.6 Facilities for sealing must be provided. Methods of sealing are illustrated in
the drawings in Appendix 29.
6.6.3 Meter Installation Requirements
6.6.3.1 The switchboard must be complete and securely mounted in its final position
before meters can be installed.
6.6.3.2 The top of the meter panel must not exceed 2.0m from the ground.
6.6.3.3 A 50mm x 50mm trunking of metal or other approved material between the
switchboard and the meter panel must be provided to house the meter cables
if the latter is installed away from the customers main switchboard.
L 44
6.6.3.4 A 6.0mm tap-hole plus screw/washer on each busbar must be provided to
facilitate connection of the voltage cables to the meter voltage coils.
6.6.3.5 If the meter panel is away from the customers main switchboard, sealable
30A HRC fuse for each phase and a sealable 3-pole ganged MCB of 6A 10kA
rating must be provided on the front of the switchboard panel near the
metering CT enclosure for the protection of the meter voltage wiring. The
MCB must be appropriately labelled.
6.6.3.6 Mounting of metering current transformers must be as follows:
Current transformers must be mounted on jumpers for easy installation.
Bakelite clamps must be provided to secure the meter current transformers
in position.
Adequate insulation between the metering current transformers and the
busbar must be provided.
The metering current transformers and meter voltage tap off points must
be installed after the incoming connection main protection current
transformers.
6.6.3.7 Enclosure
A rigid enclosure of mild steel plate of thickness not less than 1.6mm must
be provided solely for housing the metering current transformers and voltage
tap off points. The enclosures must have facilities for sealing. A typical
construction of the enclosure is shown in Appendix 30.
6.7 HIGH VOLTAGE/EXTRA HIGH VOLTAGE METERING
6.7.1 General Requirements
6.7.1.1 The customer is required to provide, install and maintain, at his own expense,
current transformers, voltage transformers, a pre-wired metering panel with
test bl ocks, MCBs, pi l ot l amps and accessori es, at hi s recei vi ng HV
switchboard. These must meet PowerGrids requirements. Drawings of the
metering panel can be obtained from Meter Section at St James District Office,
Telok Blangah Road.
6.7.1.2 All metering current and voltage transformers must be used solely for
PowerGrids revenue metering equipment. No other apparatus of the customer
i s permi tted to be connected to such meteri ng current and vol tage
transformers. However, a voltmeter may be allowed to be connected via a
100mA fuse (sealable) subject to approval by Meter Section.
L 45
6.7.1.3 The customer must also provide a metering kiosk to be located close to where
the metering current and voltage transformers are installed, such that the
route length of the cables from the current and voltage transformers to the
metering kiosk does not exceed 10m. Where this cannot be complied with
because of site constraints, the LEW must consult Meter Section concerning
the type and size of cables to be provided and installed by the customer.
6.7.1.4 The requirements for the kiosk are given in Appendices 31 and 32. The
access to the metering kiosk must be from outside the HV switchroom and
fitted with any one of PowerGrids approved master lock series as specified
in Section 6.1.5.
6.7.1.5 The customer must provide an appropriate metering panel of a size given in
Appendix 33 and install a 50mm x 50mm trunking of metal or other approved
material between the customers HV switchboard and the metering panel
together with the required type and size of cables.
6.7.1.6 Facilities for sealing connections of all metering wire termination at the
customers HV switchboard must be provided.
6.7.1.7 A schematic and wiring diagram of the customers switchboard must be
supplied to facilitate installation of the meters.
6.7.2 Specifications For Metering Current Transformers
6.7.2.1 The customer will provide two metering current transformers of 30VA burden
for 66kV connection or 15VA burden for connection at 6.6kV or 22kV. These
must be of accuracy class 0.5 complying with SS 318 or IEC 60044-1.
6.7.2.2 The current transformers are to be installed on the red and blue phases at
the cable end for each of his receiving switchboard. The current transformer
ratio will be determined by PowerGrid based on the customers load
requirement. For connection at 230kV, the LEW will liaise with Meter Section
on metering requirements.
6.7.2.3 The rated short-time current rating must not be less than 63kA 1 second,
40kA 3 seconds, 25kA 3 seconds or 20kA 3 seconds for connection at 230kV,
66kV, 22kV or 6.6kV respectively.
6.7.3 Specifications For Voltage Transformers
6.7.3.1 For each of the customers receiving switchboard, one of the following voltage
transformers must be provided:
6.7.3.1.1 One unit 3-phase 66kV/110V, 22kV/110V or 6.6kV/110V voltage transformer
of 100VA burden per phase, connected star-star with the yellow phase
terminal of the secondary winding earthed, or
L 46
6.7.3.1.2 Three units single-phase,
66kV 110V or 22kV 110V or 6.6kV 110V
3 3 3 3 3 3
Voltage transformers of 100VA burden per phase, connected star-star with
the yellow phase terminal of the secondary winding earthed, or
6.7.3.1.3 Two units single-phase 66kV/110V, or 22kV/110V or 6.6kV/110V voltage
transformers of 180VA burden per phase, V connected with the yellow
phase terminal of the secondary winding earthed.
6.7.3.1.4 Voltage transformers must be of accuracy class 1.0 complying with BS3941
or IEC 60186.
6.7.3.1.5 The secondary wiring of the voltage transformer must terminate in a sealable
MCB incorporated in the switchgear panel. The MCB must be rated at 6A,
110V, 50Hz with breaking capacity not less than 10kA and the terminals of
the MCB must be able to accept cables of cross section up to 6mm
2
.
6.7.3.1.6 The voltage transformers must be fused and adequate stock of spare high-
voltage fuses must be kept by the customer.
6.7.3.2 All metering current transformers and voltage transformers together with
their manufacturers test certificates must be submitted for testing and
approved by Meter Section at least 2 weeks before connection is required.
Voltage transformers at 66kV and 230kV are exempted from testing and only
the manufacturers test certificates have to be submitted.
6.8 MASTER AND SUB-METERING SCHEME
All multi-metered premises will be metered under master- and sub-metering
arrangement. Each individual unit within the premises must be metered
individually under their respective Sub-meter whereas the landlord or the
owner of the premises will be metered under the Master-meter. The landlord
or owner will pay the amount of electricity representing the difference
between the amount of electricity consumed and registered by the Master-
meter and the aggregate of the amount of electricity consumed by the
occupants of the individual units within the premises.
6.9 METERING REQUIREMENTS
6.9.1 Low Voltage Customer
6.9.1.1 Single Customer More Than 75kVA
6.9.1.1.1 The customer will provide three metering current transformers (CTs) of 5VA
burden and accuracy class 0.5 complying with SS 318 or IEC 60044-1 and the
pre-wired metering panels on the customers intake switchboard. The pre-wired
L 47
metering panel must be fitted with PowerGrid approved type test block, MCB
and pilot lights and connected with metering cables to the CTs and busbars.
The CTs together with their manufacturers test certificates must be submitted
for testing and approval at least 2 weeks before connection is required.
6.9.1.1.2 A request for appointment to fix meters should be made only after the LEW
has arranged with SPSL for a date to energise the service connection.
6.9.1.1.3 Meter Section will arrange to install the meters upon production of the
energisation appointment letter issued by SPSL and requires at least 4
business days before the energisation of service connection date.
6.9.1.2 Multi-Metered Buildings
6.9.1.2.1 Submission of floor plans of building showing the locations of metering
kiosks, meter room, meter compartments/riser ducts/cupboards.
6.9.1.2.2 Submission of dimensioned metering layout showing the plan, front and
side elevations of the meter boards/rooms/compartments/riser ducts/
cupboards, etc.
6.9.1.2.3 Arrangements for sample units of each approved type of meter compartment/
riser duct/cupboard and meter board to be inspected and approved by Meter
Section before meters are installed.
6.9.1.3 Landed Housing Development
6.9.1.3.1 Submi ssi on of si te pl ans of bui l di ng showi ng the l ocati ons of meter
compartments at gate pillars.
6.9.1.3.2 Submission of dimensioned metering layout showing the plan, front and
side elevations of the meter compartments in the gate pillars.
6.9.1.3.3 Arrangement for sample units of each approved type of meter compartment
and meter board to be inspected and approved by Meter Section before meters
are installed.
6.9.2 High Voltage/Extra High Voltage Customer
6.9.2.1 The revenue metering equipment will be installed at the customers end of
the service connection. The customer will provide a suitable metering kiosk
at his intake station, and metering CTs and VTs for each of his receiving
switchboard. The metering CTs ratio will be based on declared demand as
shown in 6.9.2.6.
6.9.2.2 The metering CTs and VTs are to be used solely for revenue metering purposes.
The CTs and VTs up to 22kV supply are to be sent together with the
manufacturers test certificates to Meter Section for testing and approval at
L 48
least 2 weeks before supply is required. For supply at 230kV, the LEW has to
liaise with Meter Section on metering requirements.
6.9.2.3 The VTs, after re-installation onto customers switchgear, have to be tested
and phased out, and a test report as per Appendix 34 submitted to Meter
Section for approval before installation of meters.
6.9.2.4 The customer will provide and maintain, at its own cost, a fixed telephone
line to the metering kiosk to be used exclusively for the purpose of remote
meter reading. This telephone line must be terminated in a standard telephone
socket at the metering kiosk. Provision of this telephone line must be made
before installation of meters.
6.9.2.5 If the customer is unable to provide the fixed telephone line due to site
constraint, a GSM line can be considered subject to approval by Meter Section.
6.9.2.6 Based on the contracted capacity stated in the application form, the customer
is required to provide the correct metering CTs as follows:
Contracted Capacity CT Ratio
MW
22kV Service Connection 0.0 0.8 50/25/5
0.81 1.7 100/50/5
1.71 2.5 150/75/5
2.51 3.2 200/100/5
3.21 5.0 300/150/5
5.01 6.6 400/200/5
6.51 10.0 500/300/5
66kV Service Connection 0.0 5.0 100/50/5
5.01 10.0 200/100/5
10.01 20.0 400/200/5
20.01 30.0 500/300/5
30.01 40.0 800/400/5
40.01 80.0 1,000/500/5
6.10 CONTESTABLE CUSTOMERS
6.10.1 Eligibility
The eligibility of contestable customers are determined by EMA.
6.10.2 Additional Requirements For Contestable Customers
A contestable customer must provide and maintain at its own cost a fixed
telephone line to be used exclusively for the purpose of remote meter reading.
The LEW must liaise with Meter Section for the location and termination of
this telephone line.
49
Appendices
Appendix 1

APPLICATION FORM For official use only

FOR CONNECTION TO POWERGRID
TRANSMISSION SYSTEM
Application
Number. :

Date Received :
To : SP Services Ltd
111 Somerset Road #06-05
Singapore Power Building
Singapore 238164

PART 1 APPLICANTS DETAILS
Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required
to obtain supply from their landlord/MCST or HDB for HDB premises.

I request you to provide/upgrade the load connection service to my premises as given in Part II by my Licensed Electrical Worker undertaking the
project

Name of Company/Applicant*: ________________________________________________ ROC/NRIC No: ________________

Name of Authorised Person & Designation* ___________________________________________________________________

Forwarding Address : ________________________________________________ Postal Code : Singapore______________

Tel : _________________ Fax : __________________ Mobile Phone : ____________________ Pager ________________

Email : _______________________ Signature of Applicant : _______________________________ Date : _______________

PART 2 INSTALLATION DETAILS (To be completed by LEW)

Project Description : ________________________________________________________________________________________

Site Address : ___________________________________________________ Postal Code : Singapore ________________

Utility Account No (existing) : ______________________________ Existing Approved Load : _____________________ kVA/kW*

Any previous Consultation? Yes / No* If Yes, please provide Consultation No : __________________

TYPE OF CONNECTION (Please tick appropriate box)

New Connection Upgrading the existing service cable Temporary Connection

Change of intake connection point

TYPE OF DEVELOPMENT (Please tick appropriate box)

Industrial Commercial Residential

Others (Please specify) : _______________________________________________________

Type of Business Activity (Brief Description) : __________________________________________ Voltage Sensitive? Yes / No *

LOAD REQUIREMENT (One intake connection point per premises)

Total load requirement (to include existing load, if any)

30A/60A/100A* 30A/60A/100A* __________ kVA at 400V three-phase
230V single-phase 400V three-phase

22kV 66kV/230kV*
(min 1,700kW for 2 HV services, min 12,750 kW for 4 HV services) (min 25.5MW for 66kV,min 85MW for 230kV)

Contracted Capacity of _____________________ kW at ________________________ kV via ___________ service cable(s).

Initial Contracted Capacity of ________________kW (shall not be less than of the Contracted Capacity) for ______ months
(not exceeding 12 months)

Total Load Requirement: ______________________________ kW (for multi-metered premises only)

For multi-tenanted installation with the exception of HDB residential installation, the metering scheme shall be designed as Master/Sub-metering
scheme.

Target date of Energisation : ________/_________/__________ Estimated ultimate load _____________________ kVA/kW*

50

O TO BE COMPLETED FOR INSTALLATION EXCEEDING 45kVA

Total Land Area : ____________________________ m
2
Gross Floor Area : _______________________________ m
2

PLANS AND DETAILS (Mandatory)

1 copy of Architects site and location plan
1 copy of plan showing proposed customers intake connection point.
Details of the type, floor area & designed load of individual premises for multi-metered premises

PART 3 LEW DETAILS

I confirm that the above information is correct and agree to advise SP Services should there be subsequent changes.

Name of Authorised LEW : __________________________________ Licence Number:__________________________________

Registered Forwarding Address :________________________________________________________________________________

_____________________________________________________ Postal Code : Singapore ________________________________

Tel : _____________________ Fax : __________________ Mobile Phone ______________________ Pager __________________

Email : ____________________________________________________________________________________________________

Signature of Authorised LEW ______________________________________________________ Date _______________________

* Delete where not applicable

51

Appendix 2

CONSULTATION FORM For official use only

FOR CONNECTION TO POWERGRID
TRANSMISSION SYSTEM
Consultation
Number. :

Date Received :
To : PowerGrid Ltd
Singapore 238164

CONSULTATION DETAILS

Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to
obtain supply from their landlord/MCST or HDB for HDB premises.

Reference to the consultation, I hereby enclose one copy of site & location plans including proposed customers intake connection point

Drawing No. ____________________________________________________________ for your advice on connection requirements.

SITE DETAILS

Connection Applicant/Developer* : _____________________________________________________________________________

Project Description : _____________________________________________________________________________

Site Location Lot & Mk No : _____________________________________________________________________________

Street Name : __________________________________________________________ Blk/Unit No :_______________________

LOAD REQUIREMENT (One intake connection point per premises)

New Connection Upgrading the existing service cable Temporary Connection

Change of intake connection point Other Services (Please specify):________________________________________

Type of Premises : Industrial/Commercial/Residential/Others*_________________________Gross Floor Area(m
2
): _____________

Type of Business Activity (for non-residential premise only) : _______________________________ Voltage Sensitive? Yes / No *

Existing Utility A/C No.(if any) : ________________________________

Existing Approved Load (kVA) : ________________________________ at 230V/400V/22kV/66kV/230kV*

Load Requirement (kVA) : ____________________________________ at 230V/400V/22kV/66kV/230kV*

Target date of Energisation :__________/___________/__________ Previous consultation No. (if any) : _________________

Additional information : ______________________________________________________________________________________

______________________________________________________________________________________

LEW DETAILS
I confirm that the above information is correct and agree to advise PowerGrid should there be subsequent changes.

Name of Authorised LEW : _____________________________________ Licence Number:_______________________________

Company Forwarding Address :________________________________________________________________________________

___________________________________________________________ Postal Code : Singapore __________________________

Tel : ______________________ Fax : __________________ Mobile Phone : _____________________ Pager : _______________

Email : ___________________________________________________________________________________________________

Signature of Authorised LEW ______________________________________________________ Date ______________________


52
Appendix 3

Form CS/3
Letter of Consent from the Landlord/Management Corporation

To: SP Services Ltd
Singapore 238164

ELECTRICITY SUPPLY TO: ______________________________________________________________________________
(Full Address of the Customer)
FOR:___________________________________________________________________________________________________
(Name of Customer)
TOTAL LOAD ALLOWED FOR: __________________________________ AT _______________________________ VOLTS
________________________________________________________________________________________________________

PART I

1. I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the
abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the
building/complex, and the total approved load to the entire building/complex will not be exceeded.

2. I have no objection for the abovementioned load to be connected to the rising/horizontal mains system/main switchboard of the
building/complex.

3. The Electrical Installation Licence No. of the building/complex is ______________________.

4. The electrical installation of the building/complex from which this load is to be connected is

Unmetered (i.e. without Master Account)

Metered under Master Account No. __________________________________.

5. I will check to ensure that the abovementioned installation is compatible with the electrical installation of the building/complex.

________________________________________________________ Date: _____________________________________
Signature of Licensed Electrical Worker

Licence No:_______________________________________________ Tel No: ____________________________________

Name: ___________________________________________________

Address: _________________________________________________
___________________________________________________________________________________________________________

PART II

I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the
rising/horizontal mains system/main switchboard of the building/complex.

________________________________________________ Date: _______________________________
Signature of authorised person

________________________________________________ ____________________________________
Name Designation

Official Stamp of the
landlord/developer/management corporation

53
54

Appendix 4
FORM CS/3H
Letter of Consent from the Housing & Development Board
To : SP Services Ltd
111 Som erset R oad #06-05
Singapore Pow er B uilding
Singapore 238164
ELEC TR IC ITY SU PPLY TO :
FO R :
TO TA L LO A D A LLO W ED FO R : AT VO LTS
PART 1
1 I have checked the loading of the electrical installation of the abovem entioned building/com plex and hereby confirm that the
abovem entioned load requirem ent can be catered for from the rising/horizontal m ains system /m ain sw itchboard of the building/com plex,
and the total approved load to the entire building/com plex w ill not be exceeded.
2 I have no objection for the abovem entioned load to be connected to the risiing/horizontal m ains system /m ain sw itchboard of the building/
com plex.
3 The Electrical Installation Licence N o. of the building/com plex is .
4 The electrical installation of the building/com plex from w hich this load is to be connected is
U nm etered (i.e. w ithout M aster A ccount)
M etered under M aster A ccount N o.
5 I w ill check to ensure that the abovem entioned iinstallation is com patible w ith the electrical installation of the building/com plex.
Signature of LEW : D ate :
Licence N um ber : Tel N o :
N am e :
A ddress :
PART 2
1 I hereby give consent for the abovem entioned custom er to tap electricity supply of a capacity indicated above from the rising/horizontal/
m ains system /m ain sw itchboard of the building/com plex.
2 The H D B area code is
D ate :
Signature of A uthorised Person
For and on behalf of H ousing & D evelopm ent B oard
N am e : D esignation :
Full A ddress of the C ustom er
N am e of C ustom er
55

Appendix 5
Request to Handover Substation
D ate :
To : Pow erG rid Ltd
111 Som erset R oad #08-05
Singapore Pow er B uilding
Singapore 238164
A ttn:Senior M anager
(C ustom er Projects East/W est/D istribution Projects)
D ear Sir
PR O JEC T : ELEC TR IC ITY SU PPLY TO
1. In connection w ith the electrification schem e (SPSL A ppln N o : ________________ ), I w ish to advise that the proposed Pow erG rid substation
has been com pleted in accordance w ith plans and specifications approved by your C om pany and the C om petent A uthority.
2. I confirm that the structural Professional Engineer in-charge has certified that the substation structure is constructed according to the
approved plan to w ithstand the load specified by your C om pany.
3. I also certify that the electrical installation at the substation has been inspected and tested in accordance w ith the requirem ents of your
C om pany as follow s:
a Earth value of electrode system is ______________ ohm s.
b The continuity of each circuit protective conductor is satisfactory.
c A ll m etal conduits have been bonded to earth.
d Polarity throughout the installation is correct.
e A ll single pole control devices are in live conductors only.
f The insulation resistance of the fixed w iring installation is ___________ M egaohm .
g A ll flexible cords, sw itches, fuses, plugs and socket outlets are in good serviceable condition.
h The installation includes ______________ N os lighting points and _______________ N os socket outlets.
4. I shall be obliged if you could send your representative for a joint site inspection on _____________________, and thereafter to takeover
the said substation.
Yours faithfully
Signature of Licensed Electrical W orker
N am e :
A ddress :
Tel N o :
N B : This form m ust be subm itted one w eek prior to the date for joint site inspection, w hich shall norm ally
take place from 10 am to 12 noon.
56

Appendix 6
SP SERVICES LTD
(Acting for itself and as agent for and on behalf of Public Utilities Board and City Gas Pte Ltd for the supply of utilities)
APPLICATION(S) FOR THE SUPPLY OF WATER, ELECTRICITY AND/OR GAS
Name of Consumer NRIC/Passport No.
(personal or company) Co Reg No.
Co Reg Date
Address of Premises for
which supplies are required Contact Tel No.
Fax No.
Mailing Address
(if different from
the Premises)
1. I/We make application(s) for the following utilities:
Water supply from the Public Utilities Board Electricity supply from SP Services Ltd Gas supply from City Gas Pte Ltd
2. I/We agree that each application for a utility, when accepted, will constitute a binding contract between myself/ourselves and Public Utilities
Board/SP Services Ltd/City Gas Pte Ltd (as in the case may be) and I/We agree that each of such contract shall be separate and independent
from each other and shall be separately enforceable.
3. In the event that I/We make an application for gas at a later date, I/We agree to be bound by the terms and conditions for supply of gas set out in
Part III overleaf and such other additional terms and conditions which City Gas Pte Ltd may, at its absolute discretion, notify and impose. I/We
understand that nothing herein shall be constructed as an offer by City Gas Pte Ltd to supply gas to me/us and that City Gas Pte Ltd has the
absolute discretion to reject my application for gas supply for any reason.
4. I/We agree to be bound by the terms and conditions specified by each supplier as set out in Part I (Water Supply)/Part II (Electricity Supply)/
Part III (Gas Supply) overleaf.

Consumers Signature/Date Name, Designation & NRIC/Passport No.
Co Stamp (Where applicable) of Person signing for Company
FOR OFFICIAL USE
Name NRIC/Passport No.
Co Reg No.
Address Your A/C No.
Appointment for Turn-on of Supplies
Utility Date Time CC DCI BC FC Code Date
IF YOUR WATER METER IS OUTSIDE YOUR PREMISES, FOR ELECTRICITY TURN-ON, PLEASE WAIT FOR THE TECHNICIAN TO INSPECT THE
YOU NEED NOT BE PRESENT FOR WATER TURN-ON. PREMISES AT THE APPOINTED TIME UNLESS STATED ABOVE.
(the Consumer)
(the Premises)
57

Appendix 7
SP SERVICES LTD
APPLICATION FORM FOR INTERBANK GIRO
PART 1: FOR APPLICANTS COMPLETION (fill in the spaces indicated with )
Date: Name of Billing Organisation:
SP SERVICES LTD
To: Name of Bank: Utilities Account Holders Name:

Branch: Utilities Account Holders Number:

(a) I/We hereby instruct you to process SP Services instructions to debit my/our account.
(b) You are entitled to reject SP Services debit instructions if my/our account does not have sufficient funds and charge me/us a fee for this. You may also
at your discretion allow the debit even if this results in an overdraft on the account and impose charges accordingly.
(c) This authorisation will remain in force until terminated by your written notice sent to my/our address last known to you or upon receipt of my/our
written revocation through SP Services.
My/Our Name(s): My/Our Contact (Tel/Fax) Number(s):

My/Our Bank Account Number: My Signature/Thumbprint:

(As in Banks Records)
Bank Account Holder NRIC No / P/P No:
Our Company Stamp/Signature
(As in Banks Records)

PART 2: FOR SP SERVICES COMPLETION
Bank Branch SP Services Account No. Utilities Account No.
Bank Branch Account No. To Be Debited
PART 3: FOR BANKS COMPLETION
To: SP Services Ltd
This Application is hereby REJECTED (please tick) for the following reason(s);
Signature/Thumbprint# differs from Banks records Wrong account number
Signature/Thumbprint# incomplete/unclear# Amendment not countersigned by customer
Account operated by signature/thumbprint# Others:
Name of Approving Officer Authorised Signature Date
* For thumbprints, please go to the branch with your identification #please delete where inapplicable
Appendix 8

FORM CS/5
APPLICATION FOR INSPECTION OF ELECTRICAL INSTALLATION

For official use
To: SP Services Ltd
111Somerset Road #06-05 APPLICATION NO:
Singapore 238164

PART I

I/We,
#Mr/Mrs/Miss/Messrs____________________________________________________________________________________
(# Delete as appropriate). (name of applicant/company)

Utility Account No :
_____________________________________________________________________________________________________

request you to provide an electrical installation inspection and install kWh meter.
(Please tick if meter is required)
Details of my/our application are as follows:

(Please fill in the appropriate box below)

An application for electricity supply service has been submitted earlier and approved.

SP Services Application Reference No is: _______________________________________

OR

This is a new application with details as given in Part II by my/our Licensed Electrical Worker undertaking the project.
(Form CS/3 or CS/3H shall be attached for supply connection from landlords or HDBs electrical installation.)

My/Our particulars:

NRIC number/Company ROC number: ___________________________________________________________________
Name of Authorised Person for Company:_________________________________________________________________
(if applicable)
Forwarding Address: _________________________________________________________________________________
________________________________________________________Postal Code: ______________

Tel:___________________ Fax : ___________________ Mobile phone: ___________________ Pager:_____________

Email: ____________________________

--------------------------------------------------- --------------------------------------------
Signature of Applicant Date

___________________________________________________________________________________________________________

PART II (INSTALLATION DETAILS - To be completed by Licensed Electrical Worker if there is no application submitted earlier)

Project Description: ________________________________________________________________________________________
Site Address: ___________________________________________________________________Postal Code: ________________
Type of Application (Please tick the appropriate boxes)

New Supply Temporary Supply Upgrading of Supply Downgrading of Supply

Extension Rewiring Replacement of switchboard/switchgear

Amalgamation Shifting of Meter

Conversion to Master/Sub Metering Scheme

Other Services (Please specify)

58

Appendix 8

Landlords installation HDBs installation Public Lighting Network
Supply PowerGrid Ltds (Form CS/3 is to be (HDB's endorsement (Form CS/3 PL is to be
Connection from: installation/mains submitted) is required) submitted)

Type of Development: Industrial Commercial Residential Others

Type of Business (Brief Description): ___________________________________________________________________

Total supply capacity (including existing requirement,

if any)

30/40A# 230V 60A/80A/100A# 230V 30A/60A# 400V .............kVA
single-phase single-phase three-phase at 400V three-phase
(# Delete as appropriate)

PART III DETAILS OF PROPOSED INSTALLATION OR EXTENSION. For HDB residential unit, erasure/amendment to any of
the QTY figure below is NOT acceptable.)

QTY QTY
Lamp points 30/32A SPN ISO
13A socket outlets 30/32A TPN ISO
15A socket outlets Water Heater Points
15/16A SPN ISO Others
15/16A TPN ISO
20A SPN ISO
20A TPN ISO
( A completed Certificate of Compliance is required to be submitted if a new meter is required.)

Name of LEW : _____________________ LEW Licence No. : _____________

__________________________________
Signature of Licensed Electrical Worker Date : ______________________

Forwarding address (as registered with EMA): __________________________________ Fax No.: ____________________

_______________________________________________________________________ Contact No.: ___________________

Postal Code: ________________

__________________________________________________________________________________________________

PART IV Endorsement by HDB (applicable for HDB residentiaI premises)

1 I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that
the abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the
building/complex, and the total approved load to the entire building/complex will not be exceeded.

2 I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the
rising/horizontal mains system/main switchboard of the building/complex.

_______________________________________
Name/designation/signature of authorised person Date: ___________________
for and on behalf of Housing & Development Board

59

60

Appendix 9
Types and Layout of Substation
The type of substation required w ill depend on the custom ers load requirem ent. SPSL shall endeavour to provide the requirem ent
of the substation w ithin 10 business days follow ing the receipt of the application form .
Typical layout plans and details for substations of the independent building type are given in A ppendices 11 to 14.
A s a guide, the types of substations applicable for the various load requirem ents are as follow s:
The functional requirem ents of the substation structure, how ever, m ust be com plied w ith. For exam ple, the m inim um clear
height of the cable cham ber and sw itchroom m ust be 1.5m and 3.1m respectively even if the substation is integrated into a
m ulti-storey building.
Subject to the layout and access being suitable, the custom er m ay incorporate the substation as part of his m ain building. The
typical layout plans show n in this handbook depict only the functional requirem ents.
Primary Distribution Drawings
Voltage Applicable/Substation size
U p to 1,000 kVA at 400/230V 6.6kV A ppendices 11
22kV Sw itchroom 7.6M x 6.2M x 5.6M
Transform er 4.0M x 4.5M x 3.6M
U p to 2,000 kVA at 400/230V 22kV A ppendices 12
U p to 5,000 kW at 22kV 22kV Sw itchroom 6.9M x 6.2M x 5.6M
Load Requirement Type of rooms
61

Appendix 10
Submission of Substation Site and Design Plans
B efore construction of the substation, the LEW shall subm it to Pow erG rid, 2 sets of plans show ing the location of the proposed
substation in relation to the rest of the developm ent and detailed layout plans for the substation. O ne set of plan w ill be
endorsed and returned to the LEW .
A ll plans/draw ings to be subm itted m ust be on appropriate A 1 or A 2 size paper and endorsed by the LEW responsible for the
planning, design and supervision of the installation. To facilitate processing, SPSLs A pplication R eference N um ber m ust be
indicated in all subm issions w hich shall be accom panied by a C hecklist for Subm ission of Substation Plans (A ppendix 15)
In the case of re-subm ission of plans, all am endm ents (addition/deletion/revision) m ade m ust be highlighted in the new set of
draw ings and listed out in covering letters.
A ll plans are to be draw n to scale and dim ensions used shall be in m etric units.
It is the responsibility of the LEW in charge to ensure that all the requirem ents as endorsed on the draw ings are incorporated
in the architectural and structural plans before construction w ork of the substation begins.
Substation Site Plans
These plans should show the location of the proposed substation(s) in relation to the surrounding area
and should include the follow ing :
(i) The proposed substation(s)
(ii) The custom ers sw itchroom (s)
(iii) The proposed Pow erG rids incom ing cable and custom ers service cable routes
(iv) The orientation of other buildings w ithin the developm ent site
(v) The proposed drivew ay to the substation entrance (to be shaded in red)
(vi) The existing and proposed drains; and
(vii) N orth-East G ridlines or 2 N E survey coordinates.
Substation Design/Layout Plans
It is m andatory that the draw ings m ust include :
1 The detailed requirem ents for the design of the substation are listed in A ppendix 16. U nless explicit w aiver is granted,
these requirem ents are to be incorporated in the architectural plans.
2 Plan, Front, R ear and Side Elevations of the substation and at least 2 cross-sections show ing the surrounding roads,
cable cham ber, sw itchroom beam s and clear height, sw itchroom floor openings, transform er plinths and other pertinent
details.
3 D etails of im m ediately adjoining upper floor, basem ent as w ell as adjacent space all around the substation shall be
depicted, if the substation is part of a larger building
62

Appendix 11
6.6KV/LV SUBSTATION
63

Appendix 11
6.6KV/LV SUBSTATION
64

Appendix 11
6.6KV/LV SUBSTATION
65

Appendix 11
6.6KV/LV SUBSTATION
66

Appendix 12
22KV/LV SUBSTATION
67

Appendix 12
22KV/LV SUBSTATION
68

Appendix 12
22KV/LV SUBSTATION
69

Appendix 12
22KV/LV SUBSTATION
70

Appendix 12
22KV/LV SUBSTATION
71

Appendix 13
HEAVY ALUMINIUM LOUVRED DOOR
FOR ELECTRIC SUBSTATION
72

Appendix 13
73

Appendix 13
74

Appendix 13
75

Appendix 13
76

Appendix 13
77

Appendix 14
GATE DETAILS
78

Appendix 14
GATE DETAILS
79
Proposal :
N am e of Licensed Electrical W orker :
B P N o (if any) :
Yes Not Applicable
1) D raw ings are in A 1 or A 2 series.
2) Plan, front, rear and side elevations are included.
3) C ross-sections in relation to roads and im m ediate surroundings are included.
4) D etailed layout scales of 1:50 for all plans and 1:100 for all sections and elevations.
5) Substation requirem ents stated in H andbook on H ow to A pply for Electricity C onnection
including latest updating are com plied w ith.
6) Plans are signed by the Licensed Electrical W orker.
7) Proper vehicular access to the substation from m ain road is coloured.
8) I have advised the structural PE that substation structure is to be designed to
w ithstand the loading specified in the H andbook and all structural requirem ents
have been reflected in this subm ission.
9) A ll trenches/floor openings are not affected by any beam .
10) R equired clear height (from underside of any beam ) of all equipm ent room s
and cable cham ber are com plied w ith.
11) N o colum n w ithin substation
12) N o w et area above substation
13) Location of C ustom ers Sw itchroom show n w ith proposed service cable route show n
14) I undertake to advise the architect and structural PE to ensure that all the requirem ents,
as endorsed, are incorporated into the architectural and structural plans prior to
substation construction
15) Previous draw ings w ith Pow erG rids com m ents are attached (for resubm ission case)
16) A ll additions/deletions/am endm ents are coloured
17) A ny encum brances?
Signature & Stam p of Licensed Electrical W orker Licence N o D ate
N ote : Please tick in appropriate box for all item s.
This checklist is to be subm itted for every subm ission/re-subm ission.

Appendix 15
PowerGrid Ltd
CHECKLIST FOR SUBSTATION BUILDING PLAN SUBMISSION
80
Item Requirement
C able Entry D ucts H eavy duty 150m m dia. U PVC pipes in concrete jacket to be provided and term inated
300m m after the roadside drain.
To be sealed w ith rem ovable w ater-tight plugs at both ends of pipes.
To have piling, if necessary.
C able Entry R am p C ross Sectional view s to be show n.
150m m w ide rem ovable hot-dipped galvanised m ild steel gratings to be provided.
W alls and floors to be plastered and rendered w aterproof.
C able Trenches Sand filling to be carried out after cable installation.
D epth of 900m m (no beam s shall be allow ed w ithin/across the trenches).
O penings to be covered by rem ovable hot-dipped galvanised m ild steel.
Sw itchgear Floor G rating of 300m m w idth w hich is able to support at least 100 kg.
To take a load of 1,600 kg per sq m . Floor beam is to be 200m m aw ay from the H V floor
opening. A ll floor openings to be free of beam .
Sw itchroom Louvred heavy duty alum inium door to A ppendix 13.
Size: 2.9M X 1.8M w ide nett for 22K V sw itchroom 2.7M X 1.8M w ide nett for 6.6K V sw itchroom .
Floor to have a 50m m thick cem ent rendering including a 20m m granolithic sm ooth finish of
cem ent, granite chips and sand in the ratio of 1:1:1 plus 9kg ironite or equivalent approved
hardener to each 45 kg of cem ent. For 22kV substations, final rendering of Pow erG rid
sw itchroom floor to be done after installation of sw itchgear floor fram e.
H eight: N o part from floor to ceiling beam s to be less than 3.1M . N o colum n allow ed w ithin the
sw itchroom .
H ot-dipped galvanised m ild steel/stainless steel railing to be provided for stairs and loading
platform . (R em ovable type in front of door.)
H asp and staple (140m x 65m x 6m m ) and door hinges to be of brass or stainless steel.
A dequate natural lighting required. Provision of glass block in sm all m odules.
Ventilation panels to be installed at high level
Transform er R oom N oise level of 60 dB em itted from each transform er to be considered in the choice of location of
transform er yard.
A dequate natural cross air ventilation required. Provision of PC vent block or A lum inium
ventilation panels.
Each transform er plinth to be able to take a dead load of 6 tonnes.
D oor: 2.7M x 2.7M nett for each transform er. H eavy duty alum inium louvered doors to
A ppendix 13.
LV trench of 800m m m in. w idth for every 2 transform ers. Separate LV trench to be provided for
additional transform ers.
H asp and staple (140m m x 65m m x 6m m ) and door hinges to be of brass or stainless steel.
W all/C olum n Finishes A ll concrete surfaces shall be properly prepared and 20m m cem ent plastering w ork carried out
such that there should be no cracks, blisters and other defects.
The em ulsion painting system used for external w alls shall be suitable for outdoor application.
There shall be a five (5) years w arranty of the textured coating on all w alls against all defects
arising from colourfastness, faulty w orkm anship and/or m aterials, etc.

Appendix 16
PowerGrid Ltd
SUBSTATION LAYOUT REQUIREMENTS TO BE
INCORPORATED IN THE ARCHITECTURAL PLANS
81

Appendix 16
Electrical Installation Schem atic layout to be show n.
A ll w iring to be in surface conduits.
C ircuits to be controlled by m iniature circuit breakers and ELC B .
Isolators for battery chargers to tap supply by-passing ELC B .
Substation to be adequately lit. Light fittings are to be installed at 3M (suspension in type)
and 2.4M (w all-m ounting type) from floor level.
W ire-m esh casing to be provided for light fittings installed in cable cham ber.
To label circuits at D B (distribution board) corresponding to the respective sw itches, sockets
and isolators, etc.
C able C ham ber Trap door floor openings 760m m x 760m m leading to cable cham ber to have:
B asem ent(w here (a) hinged alum inium chequered covers com plete w ith w all catch.
required) (b) cat ladders w ith 6 non-skip steps. D etails as show n on draw ings.
A dequate natural ventilation required e.g. PC vent block/A lum inium vent panels.
H eight : 2.0m w ith no part less than 1.5m .
To paint the front and back of all beam w ith 50m m H red lum inous paint.
C ham ber floor to be suspendedtype capable of supporting 400 kg/m
2
(m in).
Floor level : 150m m above the im m ediate external final road or drivew ay level and above
highest flood level recorded. W all and floor to be w aterproofed and adequate drainage to be
provided, w here necessary.
D oors to be fitted w ith panic hardw are and paint in red Push lever dow n to openon internal
side of door.
M etering K iosks To be provided for Pow erG rid (see A ppendices 31 to 33) w hen custom er is taking H V supply.
W oodw ork, M etal W ork, etc To be suitably painted and anti-term ite treated for all w oodw ork.
C eiling To be of sm ooth finishes and em ulsion painted. A ll beam to be encased in R C concrete.
R oof To be of flat R C suitably w aterproofed and laid to falls of 1:80 m inim um .
R oof eaves w ith m ultiple 150m m w ide long slot openings to be incorporated for rain w ater to
free-fall direct into apron drain.
D rainage Proper drainage around the substation to be provided w ith hinged hot-dipped galvanised m .s.
gratings.
G ate/Perim eter To be 1.8m high and designed to blend aesthetically w ith the overall developm ent.
Fencing (w here required) H ollow section anodised alum inium gates to A ppendix 14.
A 600m m w ide concrete apron to surround the fence externally.
A ccess R oad To w ithstand heavy vehicles w ith laden load of 10 tonnes for all 22kV and 6.6K V substations.
W idth of drivew ay to be 4000m m (m in) and surface to be properly paved.
N o car parking lots are to be draw n in such a w ay as to obstruct vehicular access to
substation.
N O TES : (a) A ppointed project LEW is to liaise closely w ith A rchitect and Structural Engineer to obtain all their respective
requirem ents for incorporation into final layout plans subm itted for Pow erG rids endorsem ent.
(b) A ll dim ensions and figures are to be checked by the A rchitect/structural engineer/appointed project LEW prior to
substation construction.
(c) If the M anagem ent C om m ittee (M C ST) w ere to subsequently replace the security personnel w ith other m eans e.g.
electronic security system s, etc; Pow erG rid Ltd shall be consulted on the free access arrangem ent to the
substation.
(d) LEW /M & E consultants are to ensure that the proposed substation is constructed to Pow erG rid approved plans.
Item Requirement
82
1. W here an application for supply of electricity necessitates the provision of a substation, the site shall be provided and
substation constructed by the applicant consum er at his ow n cost. The G uidelines/R equirem ents for EH V Substation
B uildingsw ill be m ade available in Pow erG rids service connection proposal to the applicant.
2. The applicant shall grant Pow erG rid, its officers and agents an irrevocable licence at all tim es to have full and unrestricted
use of the substation and have free access thereto.
3. Pow erG rid m ay utilize the substation and site in such m anner as it deem s fit. Subject to the applicants requirem ent
being fully provided for, Pow erG rid shall be at liberty to use the substation for the purpose of supplying other custom ers
or for the im provem ent of the transm ission netw ork (e.g. upgrading, m odification to substation structure, alteration and
addition w orks, etc.)
4. The substation site w ithin the substation perim eter fence shall be intended solely for the substation developm ent.
5. The substation structure m ay be an independent building or form part of a larger building. It shall be located at the 1
st
storey level and m ust be readily accessible from the public road. Proper vehicular access to the substation shall be
provided for transportation of substation equipm ent by norm al m eans, i.e. truck and trailer. The gradient of the access
road to the EH V substation site (66kV and above) shall not be m ore than 1:20.
6. There shall be no danger from flooding and fire hazards.
7. The substation site shall be free from all encum brances (existing and future proposed services).
8. Suitable and proper cable access shall be provided on at least tw o sides of the substation site for all cables entering
and leaving the proposed site. If there is any roadside drain fronting/surrounding the substation site, the applicant
shall be required to install cable ducts under-crossing the drain. If the depth of the drain is m ore than 2.0 m eters from
the proposed substation ground level, the cable ducts shall be installed to over-cross the drains w ith approval from the
relevant authorities.
10. The applicant consum er shall consider the effect of noise disturbance to neighboring developm ent in its selection of
the substation site.
11. The site of the substation shall be approved by Pow erG rid and the relevant authorities. The applicant shall ensure that
all necessary approval for the substation site be obtained from the relevant authorities.
12. The applicant shall consult Pow erG rid on the substation site before com m encem ent of detail design for the substation
building.
The applicant shall subm it the necessary architectural and M & E design draw ings, incorporating the necessary
requirem ents in the above-m entioned guidelines/requirem ents, for Pow erG rids review and clearances. The applicant
shall also obtain the necessary clearances from the relevant authorities.
GENERAL REQUIREMENTS FOR EHV SUBSTATION
(66KV AND 230KV ONLY)

Appendix 17
83
CUSTOMERS 22kV AND 6.6kV MAIN INCOMING SWITCHBOARD
O /C O vercurrent relay type ID M TL w ith 3/10 characteristics.
Plug Setting = 100% , Tim e M ultiplier= 0.1.
E/F Earth fault relay type ID M TL w ith 3/10 characteristics.
Plug Setting = 20% , Tim e M ultiplier= 0.1.
PW Pilot w ire protection relay Solkor R / R F, H O R 4, (For 22kV connection)
A A m m eter
C B C ircuit breaker
To circuit breaker trip circuit
N otes :
1. Pilot w ire protection C T shall com ply w ith the follow ing requirem ents:
a) R ated knee point voltage at m axim um secondary turns not less than 80V.
b) Exciting current at the rated knee point voltage not m ore than 150m A .
c) R esistance of the secondary w inding, corrected to 75
o
C not m ore than 0.15 ohm .
2. N o other auxiliary device shall be connected to the pilot w ire protection C Ts. Pilot w ire protection C T star point shall
be tow ards protected line.
3. W here there is m ore than one incom ing service, a bus-section breaker shall be provided and be electrically and
m echanically interlocked against parallel operation of the incom ing services.
4. A ll 22kV circuits in the custom er installation shall be equipped w ith unit-protection for fast fault clearance, inclusive of
fault at cable term inations.

Appendix 18
PROTECTION REQUIREMENTS FOR CUSTOMERS
22KV and 6.6 KV MAIN INCOMING SWITCHGEAR
REVENUE METERS
PILOT WIRE TO PGS
SWI TCHGEAR
METERING CTs/PTs TO
PGS REQUIREMENTS
500/5
CLASS 5P20 15VA
OR BETTER
PW
INCOMING
SUPPLY
CB
R Y B
500/5
CLASS X
M
o
c
o
c
o
c
E/F
A
84

Appendix 18
X
R Y B N
CLASS 5P10 15VA
OR BETTER
INCOMING SUPPLY
KWH REVENUE METER
E/F
o
o
o
c
c
c
METERING CTs
C
PROTECTION REQUIREMENTS FOR CUSTOMERS
LV MAIN INCOMING SWITCHGEAR
CUSTOMERS LV INCOMING SWITCHBOARD
O /C O vercurrent relay type ID M TL w ith 3/10 characteristics or D TL relay. For D TL relay, the setting shall be 100% of
approved load w ith a tim e lag of not m ore than 0.5 sec. For ID M TL relay, the plug setting shall be 100% of approved
load w ith a tim e m ultiplier of 0.1(or 0.2 for approved load m ore than 1.5kA and up to 2.2kA and w ith source from
PG s 22kV substation).
E/F Earth fault relay operating at prim ary fault current of 20% of approved load subject to a m axim um of 120 A m p w ith
tim e lag of not m ore than 0.5 second.
N ote: LEW is rem inded that under C P5, the overall ohm ic resistance of earthing system should not exceed one
ohm . The m axim um earth fault current setting shall be equal to 50V divided by the earth resistance value.
C T C urrent transform er C lass 5P10, 15VA or better.
C B C ircuit breaker w ith adequate breaking capacity and circuit breaker using shunt trip shall be provided w ith series
trip (D irect acting trip) device that operates w ith no tim e delay under short-circuit condition, or w ith H R C fuses in
series.
To circuit breaker trip circuit.
N ote :
W here there is m ore than one incom ing service, a 4-pole bus-section breaker shall be provided and be m echanically interlocked
against parallel operation of the incom ing services.
85

Appendix 18
PowerGrid
66kV S/S
87L
87L
PowerGrids
Scope
Customers
Scope
Customer
66kV S/S
Feeder Main 1
(plus Main 2 if
Source S/S)
Pilot/OFC
Marshalling
Box
Interface
points
TYPE 1: CUSTOMER 66KV FEEDER CONNECTION
(WITHOUT EMBEDDED GENERATION PLANT)
Type 1a: Supply from PowerGrid 66kV Source Substation
Numerical Relay System (OFC) (see note iii)
Feeder M ain 1 LFC B 102
Feeder M ain 2 7SD 511/R EL316*4
Inter-tripping LFC B 102
R em ote End Interlock (on ES & D S) M echanical
Electromechanical Relay System
(Metallic pilot wire) (see note iii)
Feeder M ain 1 Solkor - R
f
Feeder M ain 2 Translay S
Inter-tripping Solkor-R
f
Type 1b: Supply from PowerGrid 66kV
Non-Source Substation
Numerical Relay System (OFC pilot wire) (see note iii)
f
Inter-tripping Solkor-R
f
N otes :
i) A ll electrom echanical feeder protection relays are to be
equipped w ith supervision and guard relays.
ii) Engineering and Protection details shall be discussed on
application.
iii) For reason of obsolescence or availability, the type of relays
and protection schem es shall subject to review and
confirm ation during the consultation period.
iv) C ustom er to supply and install pilot m arshalling board of
approved design to accom m odate the optic fibre cables and
other auxiliary cables.
v) Intertrip schem e w here applicable shall be im plem ented via
the m ain protection system .
86
TYPE 2: CUSTOMER 66KV FEEDER CONNECTION
(WITH EMBEDDED GENERATION PLANT)
Type 2a: Supply from PowerGrid 66kV
Source Substation
Inter-tripping N SD 70D
R em ote End Interlock M echanical &
(on ES, D S & C B ) Electrical (N SD 70D )
Sw itching sequencing N SD 70D
f
Inter-tripping N SD 70C
(on ES, D S & C B ): Electrical (N SD 70C )
Sw itching sequencing: N SD 70C
Sw itching sequencing: N SD 70D
f
(on ES, D S & C B ) Electrical (N SD 70C )
Sw itching sequencing: N SD 70C
N otes :
application.
iii) For reason of obsolescence or availability, the type of relays
and protection schem es shall subject to review and
approved design to accom m odate the optic fibre cables and
other auxiliary cables.

Appendix 18
87L
87L
NSD70
PowerGrid
66kV S/S
Customer
66kV S/S
PowerGrids
Scope
Customers
Scope
Feeder Main 1
(plus Main 2 if
Source S/S)
For inter-tripping
and remote
electrical interlock
Pilot/OFC
Marshalling
Box
Interface
points
NSD70
87
Type 3a: Supply from PowerGrid 66kV
Source Substation
R em ote End Interlock M echanical
(on ES & D S & T/F neutral)
f
f
N otes :
application.
iii) For reason of obsolescence or availability, the type of
relays and protection schem es shall subject to review and
approved design to accom m odate the optic fibre cables
and other auxiliary cables.
v) Intertrip schem e shall be im plem ented via the m ain
protection system or the signalling equipm ent.
TYPE 3: CUSTOMER 66KV FEEDER
TRANSFORMER CONNECTION

Appendix 18
87L
87L
87T
PowerGrid
66kV S/S
PowerGrids
Scope
Customers
Scope
Customer
22kV S/S
Include REF,
TF Diff, OC/EF
& other local
protection system
Pilot/OFC
Marshalling
Box
Feeder Main 1
(plus Main 2 if
Source S/S)
Interface
points
88
Supply from PowerGrid 230kV Substation
Numerical Relay System (OFC) (see note ii)
Feeder M ain 1 C urrent D ifferential
w ith D istance Protection
Teleprotection N SD 70D
Sw itching sequencing N SD 70D
N otes :
i) Engineering and Protection details shall be discussed on
application.
ii) For reason of obsolescence or availability, the type of
iii) C ustom er to supply and install pilot m arshalling board of
TYPE 4: CUSTOMER 230KV
FEEDER CONNECTION

Appendix 18
87L
87L
NSD70
NSD70
Interface
points
Pilot/OFC
Marshalling
Box
For teleprotection
inter-tripping and
remote electrical
interlock
PowerGrid
230kV S/S
PowerGrids
Scope
Customers
Scope
Customer
230kV S/S
Main 1 and
Main Two
89
Supply from PowerGrid 230kV Substation
Numerical Relay System (OFC) (see note ii)
Feeder M ain 2 C urrent D ifferential w ith
D istance Protection
Teleprotection N SD 70D
Sw itching sequencing: N SD 70D
N otes :
i) Engineering and Protection details shall be discussed on
application.
i) For reason of obsolescence or availability, the type of
iii) C ustom er to supply and install pilot m arshalling board of
TYPE 5: CUSTOMER 230KV
FEEDER TRANSFORMER CONNECTION

Appendix 18
PowerGrid
230kV S/S
87L
87L
87T
NSD70
NSD70
Main 1
Main 2
For teleprotection
inter-tripping and
remote electrical
interlock
Pilot/OFC
Marshalling Box
Interface
points
Customer
66kV S/S
Customers
Scope
PowerGrids
Scope
Include T/F Diff,
REF, OC/EF
& other local
protection system
Appendix 19

90
APPLICATION FOR DE-ENERGISATION / RE-ENERGISATION (ADRE)

Licensed
Installation No
Service No Voltage
Name of Installation:
Address of Installation:
Requested De-energisation Requested Re-energisation
Date Time *am/pm Date Time *am/pm
Contestable
Customer :
*Yes / No
#Name of Customer : #MSS A/C No : #Name of Retailer:

Section Fax No Tel No
EHVN 62909124 62909121
RNW 66609390 66609301
RNC 62799590 62799501
RNE 62409203 62409218
RNN 67653745 63146172
RNS 62909110 62909101
CPE 62409225 62409257
CPW 62799532 62799559
DP 62909140 62909139
To: *Sr Manager (EHV Network)
*Sr Manager (Regional Network *West / Central / East / North / South)
*Sr Manager (Customer Project- *East / West)
*Sr Manager (Distribution Projects)

(1) I, the undersigned LEW for the above installation, wish to apply for a *de-energisation/re-energisation
at the time stated above. My work, after the de-energisation, will involve the following:

*1 Routine Servicing
2
(Please Specify)

(2) * I / or (Name / Licence No of appointee approved by
Regulation Division of EMA) will attend to the *de-energisation / re-energisation PERSONALLY.

(3) I understand that: -
(a) No work is to be carried out on the service cable until both PowerGrid officer and myself have
signed the SDRE (Statement for De-energisation and Re-energisation) after we have safely
isolated the service cable at both ends.
(b) I am required to be on time on the approved date of de-energisation or re-energisation, failing
which the PowerGrid officer may cancel any appointment made.

Signature : Telephone/HP No.:

Name :

Date : Licence No : *Grade: Engineer
Technician
Electrician

Notes : (a) All requested date and time are subject to PowerGrids approval.
(b) For non-contestable customers, this form should reach PowerGrid 7 business days before the requested date.
(c) For contestable customers, this form should reach PowerGrid 14 business days before the requested date.
(d) For urgent work on Sundays / Public Holidays and after office hours, LEW is required to co-ordinate with
PowerGrid personally.
(e) * Delete whichever is not applicable.
(f) # To be filled in for contestable customer.
Appendix 20

POWERGRID LTD A No. 00001

STATEMENT FOR DE-ENERGISATION AND RE-ENERGISATION (SDRE)

Part I & II concern the de-energisation and re-energisation of the service cable specified below. Each statement is
valid only when it is signed by both the LEW of the installation and the POWERGRID officer-in-charge of the de-
energisation or re-energisation.

Name Of Installation: _________________________________________________________________________
Service Cable No. : *1 / 2 / 3 / 4

Isolated From (Substation Name, OG Box, Etc): ____________________________________________________

This de-energisation is *due to tripping / requested by PowerGrid / requested by LEW.
* - please delete whichever is not applicable

PART I : DE-ENERGISATION STATEMENT (TO BE SIGNED AFTER DE-ENERGISATION)

(This statement is required only when work is to be done on the service cable by either the LEW or the PowerGrid
officer, or both)

Date: Time:

DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the above service cable has been turned-off
and safely isolated from the customer's intake switchboard.

Signature: Name: Licence No.

DECLARATION BY POWERGRID OFFICER: I, the undersigned POWERGRID officer, hereby declare that the above
service cable has been de-energised and safely isolated from the PowerGrids network.

Signature: Name: Section:

PART II : RE-ENERGISATION STATEMENT (TO BE SIGNED BEFORE RE-ENERGISATION)

Date: _____________________ Time:

DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the customer's switchgear, to which the above
mentioned service cable is connected, is cleared of all earthing leads, labour and tools, and that the switchgear is fit
for re-energisation from the POWERGRIDs end with effect from the time specified above. I undertake to ensure that
no work by any person will be carried out on the service cable at the customer's end until a new de-energisation
statement is signed by both parties.


ACKNOWLEDGEMENT BY POWERGRID OFFICER:

Signature: Name: Section:

PART III : DECLARATION BY LEW ON THE TIME OF TURN-OFF AND TURN-ON OF INCOMING
SUPPLY AT CUSTOMERS INTAKE SWITCHBOARD (for Contestable Customer only)

TO : SP SERVICES LTD (Fax no: 68206800, tel no: 68238288)

Name of Customer : _________________________________________ MSS A/C No : ______________

Address of Installation : _______________________________________________________________________

DECLARATION BY LEW: I, the undersigned LEW, hereby declare that I had turned-off and turned-on the incoming
supply at the customers intake switchboard at the following date / time:

Date of Turn-Off : __________________ Time of Turn-Off : __________________

Date of Turn-On : __________________ Time of Turn-On : __________________


91
Appendix 21
CERTIFICATE OF READINESS
FOR THE ENERGISATION OF SERVICE CONNECTION

Name of Customer Installation:
Address:
Customer Installation Licence No/Expiry Date:
Connection Voltage:
Approved Load:
Name of Connection Cable(s):
Owned by Connection Applicant (Yes / No)
MSS Account No:
Name of Retailer:

Certification By LEW

I, ______________________(name) the undersigned LEW, hereby certify that the service connection*,
the equipment and works at the above installation (Licence No: ______________) are now ready and fit
for energisation with effect from the date and time specified below.

Date:
Time:

I certify that:

a. protection details are as follows**:

CT Ratio: /1A or 5A*
Short-Time Withstand Current Ratings of Main Supply Incoming Switchgear_______KA for 3 sec
Main 1 Type:
Main 2 Type*: Direct Acting Tripping Setting: ______________
O/C Type: Setting:
E/F Type: Setting:

b. the switching equipment/transformer/service connection* and all associated apparatus
related to the service connection have been tested and checked by me and they have
passed the pre-commissioning checks and tests in compliance with the Market Rules,
Transmission Code, Handbook on How to Apply for Electricity Connection, Connection
Agreement, all other applicable standards, and the associated protection systems have
all been proven effective.

c. The main protection schemes for the service connection have been commissioned by
load simulation method on date: ______________**

d. *for multi-metered installation with the exception of HDB residential installation, the
metering scheme has been designed as master/sub-metering scheme.

** To indicate NA where protection scheme is not applicable

92

Appendix 21

e all necessary meters have been installed.

f. the safety coordination requirements of the Transmission Code have been fully complied
with.

g. all workmen have been withdrawn and warned that it is no longer safe to continue to
work on the equipment without a Permit-to-work (PTW), and that all tools, scaffolding,
ladders, construction materials including any temporary local earthing connections have
been removed from the equipment, and all protective screens or guards, if any, have
been securely fixed and the appropriate warning signs displayed and that all keys, if any,
necessary for the isolation and operation of the equipment have been handed to me.

h. all circuit earth on equipment to be energised are removed.

i. equipment to be energised in this request (the diagram must clearly indicate the portion
of the equipment to be energised. If space is insufficient, please provide diagram as
attachment) is shown below:

Name & Signature of LEW responsible for the
design of the customer installation/
operation of the electrical installation#
Licence No. Date

# applicable for re-energisation of service connection only

93
Appendix 22.1
FORM CS/6
REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER FOR NEW SUPPLY
UNDER DIRECT SUPPLY FROM POWERGRID (CONTESTABLE CUSTOMER)

For offici

al use
CMS Installation no. ________________

PART I Customer Details To be completed by LEW

Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________

NRIC/Company ROC:_______________________________________________________________________

Application no.: _______________________________ Type Of Business:
_____________________

Site Address as given by IRAS :________________________________________________________________
(You are required to enclose a copy of the IRAS letter.)

Telephone point(s)/No(s). : _____________________________________________________________________
(For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the
meters)

Supply Capacity :____________________kVA at ___________ Volts

Telephone No. : ____________________ Pager/Handphone No. : ____________________________________

Name of LEW : ____________________________ LEW License no. : ________________

Telephone no. : _____________ Handphone no. : ______________ Facsimile no. : ___________________

Signature : __________________________________ Date : _________________________

*Note: LEW shall be informed of MSSL account no. after meters have been installed. LEW shall apply for license to operate electrical
installation before proceeding to Installation Section to book for turn on appointment date.
_____________________________________________________________________________________________

PART II (For official use)

To: Meter Reading Branch, SP Services Ltd Facsimile no.: __________

Meter Serial No. Opening Meter Reading Installation Date

Date : ______________ Data Entered by: ________________________ Signature : _________________

(Full Name)

____________________________________________________________________________________________

PART III (For official use)

To: Customer Services Section(MSSL), SP Services Ltd Facsimile no.: 6820 6800

Create MSSL Account no. : ______________________ LEW has been notified of MSSL account no.

Date : ______________ Account Opened by: ________________________ Signature : _______________
(Full Name)

94

Appexdix 22.2
Form CS/7
REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER
(FOR LOAD EXCEEDING 45KVA) UNDER MULTI-METERED BUILDING SCHEME

For official use
Serial No.: ____________________

Electricity Installation Number
___________________

PART I Customer Details To be completed by LEW

Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________

NRIC/Company ROC:________________ Name of Contact Person for Company: _______________________

Telephone No. : ____________________ Pager/Handphone No. : ___________________________________

Site Address for Installation of Meter: ___________________________________________________________

Telephone point(s)/No(s). : ___________________________________________________________________
(For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meter panel)

A/c no.:
: _________________________ Master A/c no.: __________________________
(For non-contestable customer only) (For non-contestable customer only)

Supply Capacity :___________kW at ___________ Volts
Type of Business: ______________________
(Form CS/3 or CS3/H and COC shall be submitted together with this form)

Details of Landlord/MCST

Name of Landlord/MCST: _______________________________ Landlords Account no. : ___________________

Forwarding Address : _______________________________________________________Postal Code ________

Name of LEW in charge of landlords electrical installation : ____________________________________________

Contact no of Landlords LEW : __________________________________________________________________
_____________________________________________________________________________________________

Name of LEW : ___________________ LEW Licence no. : _________________

Forwarding Address (as registered with EMA) : ____________________________________Postal Code_________

Telephone no. : _____________ Handphone no. : ______________ Facsimile no. : ___________________

Signature : __________________________________ Date : _________________________
____________________________________________________________________________________________

PART II (For official use)

To: Meter Section, PowerGrid Ltd Facsimile no.: 62777 008

Meter Serial No. Opening Meter Reading Installation Date

Date : ______________ Data Entered by: ________________________ Signature : _____________________
(Full Name)

95

Appendix 22.2

PART III (For official use)

To: Supply Application, SP Services Ltd

For Non-Contestable Customer : -

Check and perform Master-sub Tagging

Sent to CRO for account move in on ____________

Move in/ Turn-On Date is on ______________

96
97

Appendix 23
APPLICATION FOR APPOINTMENT FOR ENERGISATION
OF SERVICE CONNECTION BY FAX
Facsimile Transmittal Sheet
To : M anager, Installation B ranch From : (N am e of LEW )
C om pany : SP Services Ltd C om pany :
Fax N o : 62777044 Fax N o :
D ate : O ffice Tel :
A pplication N o : Pager / H andphone N o :
*SPSL/M SSL a/c ref : A pproved Load :
Total no of pages (including this page) :
I, (LEW s nam e) (EM A Licence N o.) w ould like to m ake an appointm ent for
energisation of service connection to
(site address)
The applicant is a *contestable/non-contestable custom er.
The follow ing docum ents are faxed together w ith this application.
D ocum ents Tick if applicable
1) O pening of A ccount w ith SPSL
2) O pening of A ccount w ith Electricity R etailer/M SSL (for contestable custom er)
3) C onfirm ation of m eters already fixed (for contestable custom er)
4) Electrical Installation License issued by EM A
5) C ertificate of C om pliance (original to be subm itted to Pow erG rids project officer)
I w ill subm it the C ertificate of R eadiness on site, failing w hich service connection shall not be energised and Pow erG rid Ltd
shall not be liable for any losses arising therefrom .
I understand that the date of appointm ent is subject to confirm ation by SP Services Ltd and the appointm ent date shall not
be earlier than 4 business days from this fax date. The preferred appointm ent dates are as follow s:
1st choice : D ate Tim e: M orning/A fternoon * (* delete w hichever not applicable)
2nd choice : D ate Tim e: M orning/A fternoon *
3rd choice : D ate Tim e: M orning/A fternoon *
N am e & Signature of LEW
FOR OFFICIAL USE
The appointm ent for energisation of service connection is fixed on at .
(date) (tim e)
Please liaise w ith M eter Section of Pow erG rid Ltd for the fixing of revenue m eter before the energisation.
For clarification, please contact at Tel : 627770 .
98

Appendix 24
1 The service cable term ination and m eter com partm ent shall be located at the front-gate pillar/perim eter w all
such that it is accessible to SPSLs and Pow erG rids personnel w ithout the need to enter the custom ers prem ises.
2 It shall be constructed of concrete, brick or high im pact fibre glass and shall be com pletely w eatherproof.
Provision shall be m ade to prevent any stagnation of w ater w ithin the com partm ent.
3 The m ain dim ensions of the com partm ent are show n in the layout draw ing (see A ppendix 25). The depth of the
com partm ent shall be betw een 250 m m and 300 m m .
4 A m eter board of 20 m m thick and constructed of teak w ood or any hardw ood chem ically treated against
term ite attack shall be provided. Plyw ood board is not acceptable. A m inim um space of 450 m m (W ) x 800 m m
(H ) shall be allow ed for the term ination of the service cable and the installation of service M C B s and m eters.
C ustom ers M C B s or connectors shall be m ounted on a separate board in a separate com partm ent.
5 A hinged door w ith a clear glass view ing w indow shall be provided. The view ing w indow w ith a 200 m m (W ) x
300 m m (H ) x 6 m m (thickness) glass cover shall be positioned to be directly in front of the m eter location. To
avoid high hum idity and condensation w ithin the com partm ent, sufficient ventilation shall be provided. The
access door shall not have less than 450 m m clear access opening.
6 The door shall be constructed of stainless steel, anodised alum inium or high im pact type fibre glass reinforced
m aterial. W here a m etal door is provided, a m eans of earthing shall be provided.
7 O ne 100m m diam eter U PVC lead-in pipe shall be provided for Pow erG rid service cable. The pipe shall be laid
up to 100 m m from the floor slab of the electric m eter com partm ent and shall undercross any drain in front of the
com partm ent.
8 There shall be adequate standing space in front of the com partm ent to facilitate m eter reading, installation and
m aintenance w ork. W here there exists a drain in front of the com partm ent, a suitable concrete platform or
hinged galvanised steel grating shall be provided.
9 The com partm ent shall be exclusively used for service cable and electricity m eter. N o w ater m eter, gas m eter or
other facilities shall be placed w ithin the sam e com partm ent.
10 Please obtain clearance from U R As D evelopm ent C ontrol D ivision if the m eter-box structure exceeds their
stipulated dim ensions.
TECHNICAL REQUIREMENTS FOR SERVICE CABLE AND
METER COMPARTMENT FOR LANDED HOUSES
99

Appendix 24
STANDARD METER COMPARTMENTS AT GATE PILLAR
100

Appendix 25
STANDARD METER BOARD
101

Appendix 26
STANDARD SIZE FOR SINGLE-PHASE METER BOARD
1. M inim um space for single-phase m eter position (enclosed w ithin broken lines) :
(i) 230m m (W ) x 280m m (H ) for 25 sq m m cable and below .
(ii) 230m m (W ) x 300m m (H ) for 35 sq m m cable.
2. A custom ers earthing term inal shall be provided on the m eter board for term ination of the earthing lead and earth
continuity conductor.
3. N ot m ore than one w ire shall be connected to each term inal of the m eter term inal block.
4. A ll w ires on the m eter board from M C B /C ut-O ut to the m eter and m eter to m ain sw itch should preferably be run on the
surface.
5. The size of cables to be used for connection to m eters should not exceed 35 sq m m .
6. The m inim um length of w ire Lprotruding from the m eter board to the m eter term inal shall be at least 200m m .
7. For m eters grouped in a centralised m eter room etc, an additional m inim um spacing of 70m m is necessary betw een
each row of m eters for ease of installation/change.
8. Som e typical layouts are show n in figures A , B and C .
102

Appendix 27
STANDARD SIZE FOR THREE-PHASE METER BOARD
1. M inim um space for three-phase m eter position 450m m (W ) x 450m m (H ) (enclosed w ithin broken lines) :
2. A custom ers earthing shall be provided on the m eter board for term ination of the earthing lead and earth continuity
conductor.
3. N ot m ore than one w ire shall be connected to each term inal of the m eter term inal block.
4. A ll w ires from the m eter board from M C B /C ut-O ut to m eter and m eter to m ain sw itch should preferably be run on the
surface.
5. The size of cables to be used for connection to m eters should not exceed 35 sq m m .
6. The m inim um length of w ire Lprotruding from the m eter board to the m eter term inal should be 200m m .
103

Appendix 28
CT METER PANEL FOR LOW VOLTAGE SUPPLY
104

Appendix 29
METHODS OF SEALING METER PANELS
105

Appendix 30
ENCLOSURE FOR LOW VOLTAGE METERING CURRENT TRANSFORMERS
106

Appendix 31
HV METERING KIOSK REQUIREMENTS
(FOR 1 OR 2 FEEDERS)
H V M etering K iosk R equirem ents (for 1 or 2 feeders)
The follow ing are required :
a) M etering kiosk : 650m m by 1700m m by m inim um height 2400m m of solid brick as show n.
b) Floor opening 50m m by 50m m as show n.
c) Staircase and 1000m m landing w here required.
d) Steel or heavy duty alum inium door of 1200m m w ide by 2100m m height to be fitted w ith one of the G rid approved m aster
series locksets as given in section 6.1.5.
e) O ne 13A sw itched socket outlet, one 40W lighting point and one fixed telephone line c/w telephone socket outlet.
f) M etal grill top cover if the back w all does not extend to the roof or ventilation louvers of size 600m m x 900m m if the back
w all extends to the roof.
g) If landing is above ground level, safety railings m ust be provided.
107

Appendix 32
Side Elevation of M etering K iosk for 3 or 4 feeder panel
The follow ing are required :
a) M etering kiosk : 810m m by 2650m m by m inim um height 2400m m of solid brick as show n.
b) Floor opening 100m m by 60m m as show n.
c) Staircase and 1000m m landing w here required.
d) Steel or heavy duty alum inium door of 800m m w ide by 2100m m height to be fitted w ith one of the G rid approved m aster
series locksets as given in section 6.1.5.
e) O ne 13A sw itched socket outlet, tw o 40W lighting points and one fixed telephone line c/w telephone socket outlet.
f) M etal grill top cover if the back w all does not extend to the roof or tw o ventilation louvers of size 600m m x 900m m if the
back w all extends to the roof.
g) If landing is above ground level, safety railings m ust be provided.
108

Appendix 32
109

Appendix 33
HV METERING PANEL REQUIREMENTS
110

Appendix 34
METERING VTS
Voltage Ratio, Sequence And Phase Angle Tests Report
C ustom er : A /C N o :
Project A ddress : A PC N o :
Voltage R atio :
VTs N o :
For Feeder N o :
I, , EM A Licensed N o. had carried out the above test and results are given below .
I hereby certify that the VTs are correctly connected up for tariff m etering.
Stam p and Signature of LEW
D ate :
Primary ( V) Secondary Phase Angle
Across Sequence Across Volt Lead Lag
Frequency
RY RY R E
YR
YB YE
B R B E
YB YB YE
B Y
B R B E
RY R E
B R B R B E
R B
RY R E
YB YE
111

Appendix 35
1 Service Connection Charges for Low Voltage (LV) Connection
A ll LT consum ers are required to pay a one-tim e upfront service connection charge. These charges w hich vary for
different load requirem ents are categorised depending on the provision of a substation.
For larger consum ers w ith substations, their supply intake point is usually adjacent to the substation, w hich requires a
service cable of approxim ately 15m in m ost instances. Therefore, the standard connection charge is com puted based
on a cost of service cable length of 15m . C onsum ers shall pay the additional cost for service cable exceeding 15m . In
addition, consum ers shall also pay for those dedicated assets, such as sw itchgear and transform ers, w hich are serving
them and do not benefit others.
For individual sm all consum ers w ithout substations, the cost of LT service cable for the sam e capacity m ay vary w idely
depending on their locations w ith respect to the nearest LT m ains. These consum ers are not the sole beneficiaries of the
extension of the LT netw ork. To achieve a greater degree of equity in term s of cost for these general consum ers, a
standard cost approach is adopted based on sim ilar requirem ents. The average global cost based on capacity is
determ ined from past statistics. A s such, this category of consum ers w hich com prises m ainly the individual landed
residential ow ners, applying for the sam e applied load w ould pay the sam e standard connection charge regardless of
the location of their prem ises from the existing LT netw ork.
Standard charges are only applicable to consum ers w ho are connected to the shared netw ork. The rates, w hich are
approved by EM A , are available in the Transm ission Services R ate Schedule. Standard charges are not applicable to
consum ers w here the netw ork created is unlikely to be shared by others. Som e of these include supply to H D B prem ises,
tem porary w ork sites, public installations and offshore island prem ises. These consum ers w ould have to pay for the full
connection netw ork cost, based on user-pay principle, as they are the m ain beneficiaries.
2 Service Connection Charges for HV and EHV Connection
C ustom ers receiving H V and EH V connection shall pay the cost of the service connections to their intake equipm ent
including cables, associated equipm ent and facilities to effect the connection of custom ers equipm ent to Pow erG rids
substation/netw ork. The service connection shall cater for single contingency.
C ustom ers requesting for additional level of contingency above single contingency are required to pay for the full cost of
such provision.
3 Dedicated Network/Substation
The custom er shall pay the full cost for all associated equipm ent and facilities under a dedicated netw ork/substation
schem e w hich the netw ork capacity is intended to serve to its developm ent exclusively.
BASIS FOR THE SERVICE CONNECTION CHARGE
112

Appendix 36
STANDARD SERVICE CONNECTION CABLES
The type of service connection cables for term inating into a custom ers intake point for the applied load connected at the LV
and 22kV level and the typical connection schem es are illustrated as follow s:
Voltage Level Applied Load (kVA) Size of Cables Type of cables
LV U p to 15 35m m
2
2C ore C u/XLPE/SW A /PVC
16 45 35m m
2
46 75 35m m
2
76 140 120m m
2
4C ore A l/XLPE/SW A /PVC
141 180 185m m
2
181 230 300m m
2
231 280 300m m
2
281 460 2x300m m
2
461 560 2x300m m
2
561 1000 7x500m m
2
1C ore C u/XLPE/PVC
1001 1500* 7x1000m m
2
1C ore C u/XLPE/PVC
1001 2000^ 2 sets of 7x500m m
2
1C ore C u/XLPE/PVC
2001 3000^ 3 sets of 7x500m m
2
1C ore C u/XLPE/PVC
22kV (H V) U p to 12750kW ^ 2 sets of 300m m
2
3C ore C u/XLPE/D STA /PVC
12751 25500kW ^ 2 sets of 2X300 m m
2
3C ore C u/XLPE/D STA /PVC
Pilot cables 1.5 m m
2
5 pair C u/PE/D STA /PVC
For developm ent w hereby the service connection cables is to be supplied and installed by the custom er, the LEW shall, in the
event of a non-standard cable installation, seek approval from PG prior to installation.
* applies to upgrading of applied load
^ There m ust be an electrical and m echanical interlocking bus coupler betw een each set of cables term inating into the
custom ers sw itchboard as show n below :
300mm
2
3Core
2 x 300mm
2
3Core 2 x 300mm
2
3Core
Bus Coupler
2 x 300mm
2
3Core
Bus Coupler
HV Customers
Switchboard
25501 38250kW
Subject to
PowerGrids
approval
2 x 300mm
2
3Core 300mm
2
3Core
Bus Coupler
HV Customers
Switchboard
Up to 12750kW
2 x 300mm
2
3 Core
Bus Coupler
HV Customers
Switchboard
12751 25500kW
7 x 500mm
2
1Core 7 x 500mm
2
1Core
Bus Coupler
LV Customers
Switchboard
1001 2000kVA
LV Customers
Switchboard
2001 3000kVA
7 x 500mm
2
1Core 7 x 500mm
2
1Core
Bus Coupler
7 x 500mm
2
1Core
Bus Coupler
113

Appendix 37
CERTIFICATE OF COMPLIANCE
Particulars of Electrical Installation
N am e of C onsum er :
A ddress of Installation :
Electrical Installation Licence N o : M SS A ccount N o :
A pproved load & Supply Voltage : kW Volts
G enerator(s) Installed : O perated in parallel w ith Pow erG rids netw ork.
N o. of generator : R ating : kVA
Standby generator
N o. of generator : R ating : kVA
N ot applicable
Certification by Licensed Electrical Worker
I certify that the above-m entioned Electrical Installation com plies w ith the requirem ents of the Electricity (Electrical Installations)
R egulations 2002 and the relevant Singapore Standard C ode of Practice. I further certify that the technical requirem ents as
stipulated by the person responsible for turning on the sw itchgear w hich controls the supply of electricity to the said electrical
installation have been com plied w ith.
I hereby request for the energisation of the supply line to the said Electrical Installation on (date).
N am e & Signature of LEW Licence N o. D ate
C opy to :
M arket Support Services Licensee R EF : E(EI)R eg5(2)
Appendix 38

STATEMENT OF TURN-ON OF ELECTRICITY

ELECTRICITY SUPPLY TO ___________________________________________________
(Name of Applicant)
AT________________________________________________________________________
(Address of Installation)

ELECTRICAL INSTALLATION LICENCE NO* : ____________________________________

APPLICATION NUMBER: ______________________________________________________

I agree that the above-mentioned electrical installation is suitable for connection to the electrical
system. I certify that the supply line to the installation has been energised on

_____________________________at ______________________.
(date) (time)

____________________________________ _____________ _________________
Name & Signature of PowerGrids officer NRIC No. Date

I acknowledge that the supply line has been energised on the date and time indicated above.

____________________________________ ________________ _________________
Name & Signature of LEW requesting for Licence No. Date
energisation of supply line

I acknowledge that the supply line has been energised on the date and time indicated above
and confirm that I will be responsible for the operation of this electrical installation hereafter.

_______________________________________ _________________ _________________
Name & Signature of LEW responsible for the Licence No. Date
operation of the electrical installation*

I acknowledge that the supply line has been energised on the date and time as indicated above.

__________________________________________ __________________ ___________________
Name & Signature of Applicant or his representative NRIC / Passport No. Date

* Not Applicable for an electrical installation that is exempted from licensing

Original Copy PowerGrid Ltd
Pink Copy LEW (Requesting)
Yellow Copy LEW (Operation)
Green Copy Applicant
Blue Copy MSSL
White (last) Copy File

114
REF: E(EI) REG R5(4)
115

Appendix 39
The custom er applying for an exem pt generation facility is required to obtain Pow erG rids approval and shall
com ply w ith the technical, safety & operational and com m ercial & legal requirem ents as follow s:
A) Technical Requirements
1 real and reactive pow er/voltage output and voltage and frequency response tim es m ust be w ithin agreed lim its
2 not contribute to the voltage unbalance, voltage fluctuation and harm onic content specified for the transm ission netw ork
3 ensure that there is no interference to Pow erG rids Equipm ent or any other directly or indirectly connected consum ers.
4 ensure adequate partitioning of the exem pt generation facility equipm ent from Pow erG rids equipm ent
5 ensure that there is no fault level contribution exceeding 1.5kA to the distribution netw ork
6 w here required by Pow erG rid, install harm onic filtering circuit at the incom ing sw itchboard of the service connection in
com pliance w ith the harm om ics standard
B) Safety & Operational Requirements
1 provide an interlocking and inter-tripping facility for the service connection that m eets Pow erG rids requirem ent
2 fit exem pt generation facility w ith reverse pow er relays to prevent export of pow er to the transm ission system
3 not operate the exem pt generation facility in islanding m ode i.e.the em bedded generator m ust isolate itself from the
distribution netw ork w hen there is a fault/tripping on the latter or the custom ers installation (non-islanding protection)
4 provide a synchronizing facility at the incom ing sw itchboard of its service connection and ensure that any output is
alw ays synchronised w ith the distribution netw ork
C) Commercial & Legal Requirement
The custom er w ith an exem pt generation facility shall :
1 pay standby use of system charges or any other charges approved by the EM A
2 give an undertaking to the Pow erG rid in its C onnection A greem ent indem nify the Pow erG rid Ltd :
i) for all losses and liabilities arising from any loss of sychronisation caused by any tripping or re-closing of any
breakers in the transm ission system and the exem pt generation facility connected in parallel to the transm ission
system ; and
ii) to indem nify Pow erG rid against losses to third parties caused by im pedance, disruption degradation interference
or failure of transm ission services to third parties caused by the system or w orks carried out on the transm ission
system .
3 certify to Pow erG rid that the exem pt generation facility m eet all conditions of the relevant legislation, regulation (including
installation, fire and safety, noise and environm ent);
4 conduct regular site tests and to notify the Pow erG rid of the results
5 allow Pow erG rid to conduct inspection of, disconnect and enforce conditions in respect of the service connection if the
exem pt generation facility fails to m eet any of the above requirem ents.
6 undertake in its C onnection A greem ent w ith Pow erG rid to resolve, at its ow n expense all third party com plaints concerning
the exem pt generation facility(e.g.com plaints due to noise, or aesthetic reasons); and
7 use the service connection at its ow n risk to operate in parallel w ith its exem pt generation facility.
REQUIREMENTS FOR EXEMPT GENERATION FACILITY
NOT EXCEEDING 1MW
116

Appendix 40
IEC Standards
IEC 60044-1 (1996-12) Ed. 1.0 Instrum ent transform ers Part 1 : C urrent transform ers
IEC 60044-1-am 1 (2000-07) Ed. 1.0 A m endm ent 1
IEC 60044-2 (2000-11) C onsol. Ed. 1.1 (incl. am 1) Instrum ent transform ers Part 2 : Inductive voltage
transform ers
IEC 60044-6 (1992-03) Ed. 1.0 Instrum ent transform ers Part 6 : R equirem ents for protective current
transform ers for transient perform ance
IEC 60060-1 (1989-11) Ed. 2.0 H igh-voltage test techniques Part 1 : G eneral definations and test
requirem ents
IEC 60060-2 (1994-11) Ed. 2.0 H igh-voltage test techniques Part 2 : M easuring system s
IEC 60060-2-am 1 (1996-03) Ed. 2.0 A m endm ent N o.1 to IEC 60-2
IEC 60076-1 (2000-04) C onsol. Ed. 2.1 (incl. am 1) Pow er transform ers Part 1 : G eneral
IEC 60076-2 (1993-04) Ed. 2.0 Pow er transform ers Part 2 : Tem perature rise
IEC 60076-3 (2000-03) Ed. 2.0 Pow er transform ers Part 3 : Insulation levels, dielectric tests and external
clearances in air
IEC 60076-5 (2000-07) Ed. 2.0 Pow er transform ers Part 5 : A bility to w ithstand short circuit
IEC 60076-8 (1997-11) Ed. 1.0 Pow er transform ers Part 8 : A pplication guide
IEC 60076-10 (2001-05) Ed. 1.0 Pow er transform ers - Part 10 : D eterm ination of sound levels
IEC 60099-4 (2001-12) C onsol. Ed. 1.2 (incl. am 1 + am 2) Surge arresters Part 4 : M etal-oxide surge
arresters w ithout gaps for a.c. system s
IEC 60137 (1995-12) Ed. 4.0 Insulating bushings for alternating voltages above 1000V
IEC 60141-1 (1993-09) Ed. 3.0 Tests on oil-filled and gas-pressure cables and their accessories Part 1 : O il-
filled, paper or polypropylene paper lam inate insulated, m etal-sheathed cables and accessories
for alternating voltages up to and including 500kV
IEC 60141-1-am 1 (1995-02) Ed. 3.0 A m endm ent N o.1
IEC 60141-1-am 2 (1998-08) Ed. 3.0 A m endm ent N o.2
IEC 60228 (1978-01) Ed. 2.0 C onductors of insulated cables
IEC 60228-am 1 (1993-01) Ed. 2.0 A m endm ent N o.1
IEC 60230 (1966-01) Ed. 1.0 Im pulse tests on cables and their accessories
IEC 60255-3 (1989-06) Ed. 2.0 Electrical relays Part 3 : Single input energising quantity m easuring relays
w ith dependent or independent tim e
IEC 60255-5 (2000-12) Ed. 2.0 Electrical relays Part 5 : Insulation coordination for m easuring relays and
protection equipm ent R equirem ents and tests
IEC 60255-6 (1988-12) Ed. 2.0 Electrical relays Part 6 : M easuring relays and protection equipm ent
IEC 60255-8 (1990-10) Ed. 2.0 Electrical relays Part 8 : Therm al electrical relays
IEC 60255-12 (1980-01) Ed. 1.0 Electrical relays Part 12 : D irectional relays and pow er relays w ith tw o input
energising quantities
IEC 60255-13 (1980-01) Ed. 1.0 Electrical relays Part 13 : B iased (percentage) differential relays
IEC 60255-14 (1981-01) Ed. 1.0 Electrical relays Part 14 : Endurance tests for electrical relay contacts
Preferred values for contact loads
IEC 60255-16 (1982-01) Ed. 1.0 Electrical relays Part 16 : Im pedance m easuring relays
IEC 60255-19 (1983-01) Ed. 1.0 Electrical relays Part 19: Sectional specification: Electrom echanical all-or-
nothing relays of assessed quality
IEC 60255-23 (1994-10) Ed. 1.0 Electrical relays Part 23 : C ontact perform ance
IEC 60255-24 (2001-05) Ed. 1.0 Electrical relays Part 24 : C om m on form at for transient data exchange
(C O M TR A D E) for pow er system s
IEC 60273 (1990-03) Ed. 3.0 C haracteristics of indoor and outdoor post insulators for system s w ith nom inal
voltages greater than 1000V
LIST OF STANDARDS
117

Appendix 40
IEC 60186 Voltage Transform ers
IEC 60287-1-1 (2001-11) C onsol. Ed. 1.2 (incl. am 1 + am 2) Electric cables C alculation of the current rating
Part 1-1 : C urrent rating equations (100% load factor) and calculation of losses G eneral
IEC 60287-1-2 (1993-12) Ed. 1.0 Electric cables - C alculation of the current rating Part 1 : C urrent rating
equations (100% load factor) and calculations of losses Section 2: Sheath eddy current loss
factors for tw o circuits in flat form ation
IEC 60287-2-1 (2001-11) C onsol. Ed. 1.0 (incl. am 1) Electric cables C alculation of the current rating Part 2-1 :
Therm al resistance C alculation of the therm al resistance
IEC 60287-2-2 (1995-05) Ed. 1.0 Electric cables - C alculation of the current rating Part 2: Therm al resistance
Section 2: A m ethod for calculating reduction factors for groups of cables in free air, protected
from solar radiation
IEC 60287-3-1 (1999-05) C onsol. Ed. 1.1 (incl. am 1) Electric cables C alculation of the current rating Part 3-1 :
Sections on operating conditions R eference operating conditions and selection of cable type
IEC 60287-3-2 (1995-07) Ed. 1.0 Electric cables - C alculation of the current rating Part 3 : Sections on
operating conditions Section 2 : Econom ic optim ization of pow er cable size
IEC 60287-3-2-am 1 (1996-10) Ed. 1.0 A m endm ent N o.1 to IEC 287-3-2
IEC 60289 (1988-05) Ed. 2.0 R eactors
IEC 60298 (1990-12) Ed. 3.0 A .C . m etal-enclosed sw itchgear and controlgear for rated voltages above 1kV
and up to and including 52kV
IEC 60332-1 (1993-04) Ed. 3.0 Tests on electric cables under fire conditions Part 1 : Test on a single vertical
insulated w ire or cable
IEC 60354 (1991-10) Ed. 2.0 Loading guide for oil-im m ersed pow er transform ers
IEC 60376 (1971-01) Ed. 1.0 Specification and acceptance of new sulphur hexafluoride
IEC 60502-1 (1998-11) C onsol. Ed. 1.1 (incl. am 1) Pow er cables w ith extruded insulation and their
accessories for rated voltages from 1kV(U m = 1,2kV) up to 30kV (U m = 36kV) - Part 1 : C ables
for rated voltages of 1kV (U m = 1,2kV) and 3kV (U m = 3,6kV)
IEC 60517 (1990-10) Ed. 3.0 G as-insulated m etal-enclosed sw itchgear for rated voltages of 72.5kV and above
IEC 60517-am 1 (1994-11) Ed. 3.0 A m endm ent N o.1
IEC 60521 (1988-03) Ed. 2.0 C lass 0.5, 1 and 2 alternating-current w atthour m eters
IEC 60529 (2001-02) C onsol. Ed. 2.1 (incl. am 1) D egrees of protection provided by enclosures (IP C ode)
IEC 60651 (2001-10) C onsol. Ed. 1.2 (incl. am 1 + am 2) Sound level m eters
IEC 60660 (1999-10) Ed. 2.0 Insulators Tests on indoor post insulators of organic m aterial for system s w ith
nom inal voltages greater than 1000V up to but not including 300kV
IEC 60687 (1992-06) Ed. 2.0 A lternating current static w att-hour m eters for active energy (classes 0,2 S and
0,5 S)
IEC 60694 (2001-05) C onsol. Ed. 2.2 (incl. am 1 and am 2) C om m on specifications for high-voltage
sw itchgear and controlgear standards
IEC 60722 (1982-01) Ed. 1.0 G uide to the lightning im pulse and sw itching im pulse testing of pow er
transform ers and reactors
IEC 60811-1-1 (2001-07) C onsol. Ed. 2.1 (incl. am 1) C om m on test m ethods for insulating and sheathing
m aterials of electric cables and optical cables - Part 11 : M ethods for general application
M easurem ent of thickness and overall dim ensions - Tests for determ ining the m echanical
properties
IEC 60840 (1999-02) Ed. 2.0 Pow er cables w ith extruded insulation and their accessories for rated voltages
above 30kV (U m = 36kV) up to 150kV (U m = 170kV) - Test m ethods and requirem ents
IEC Standards continued
118

Appendix 40
IEC 60859 (1999-07) Ed. 2.0 C able connections for gas-insulated m etal-enclosed sw itchgear for rated
voltages of 72.5kV and above Fluid-filled and extruded insulation cables - Fluid-filled and dry
type cable-term inations
IEC 60885-1 (1987-03) Ed. 1.0 Electrical test m ethods for electric cables. Part 1: Electrical tests for cables,
cords and w ires for voltages up to and including 450-750V
IEC 60885-2 (1987-03) Ed. 1.0 Electrical test m ethods for electric cables. Part 2 : Partial discharge tests
IEC 60885-3 (1988-07) Ed. 1.0 Electrical test m ethods for electric cables. Part 3 : Tests m ethods for partial
discharge m easurem ents on lengths of extruded pow er cables
IEC 60947-1 (2001-12) C onsol. Ed. 3.2 (incl. am 1 + am 2) Low -voltage sw itchgear and controlgear Part 1 :
G eneral rules
IEC 60947-7-1 (1999-08) C onsol. Ed. 1.1 (incl. am 1) Low -voltage sw itchgear and controlgear Part 7 : A nciliary
equipm ent Section 1 : Term inal blocks for copper conductors
IEC 61000-4-2 (2001-04) C onsol. Ed. 1.2 (incl. am 1 + am 2) Electrom agnetic com patibility (EM C ) Part 4-2 :
Testing and m easurem ent techniques Electrostatic discharge im m unity test
IEC 61036 (2000-09) C onsol. Ed. 2.1 (incl. am 1) A lternating current static w att-hour m eters for active energy
(classes 1 and 2)
IEC 62098 (2000-11) Ed. 1.0 Evaluation m ethods for m icroprocessor based instrum ents
IEC 62271-100 (2001-05) Ed. 1.0 H igh-voltage sw itchgear and controlgear Part 100 : H igh-voltage alternating-
current circuit-breakers
IEC 62271-102 (2001-12) Ed. 1.0 H igh-voltage sw itchgear and controlgear Part 102 : H igh-voltage alternating-
current disconnectors and earthing sw itches
IEC 60068 (1988-06) Environm ental testing. Part 1 : G eneral and guidance
IEC 60068-1-am 1 (1992-04) A m endm ent N o. 1
IEC 60068-2-3 (1969-01) Environm ental testing - Part 2 : Tests. Tests C a: D am p heat, steady state.
IEC 60068-2-11 (1981-01) Environm ental testing - Part 2 : Tests. Tests K a: Salt M ist.
IEC 60068-2-11 (1999-12) C orrigendum 1.
IEC 60068-2-30 (1980-01) Environm ental testing - Part 2 : Tests. Tests D b and guidance: D am p heat, cyclic (12 +
12-hour cycle)
IEC 60068-2-30-am 1 (1985-08) A m endm ent N o. 1
IEC 60068-2-67 (1995-12) Environm ental testing Part 2 : Tests Test C y: D am p heat, steady state, accelerated
test prim arily intended for com ponents.
IEC 60068-3-4 (2001-08) Environm ental testing Part 3-4 : Supporting docum entation and guidance D am p
heat tests
IEC 60068-4 (1987-09) Environm ental testing. Part 4 : Inform ation for specification w riters Test Sum m aries
IEC 61000-1-1 (1992-05) Electrom agnetic com patibility (EM C ) Part 1 : G eneral Section 1: A pplication and
interpretation of fundam ental definitions and term s.
IEC 61000-1-2 (2001-06) Electrom agnetic com patibility (EM C ) Part 1-2 : G eneral M ethodology for the
achievem ent of the functional safety of electrical and electronic equipm ent w ith regard to
electrom agnetic phenom ena.
IEC 62067 (2001-10) Pow er cables w ith extruded insulation and their accessories for rated voltages above
150kV (U m = 170kV) up to 500kV (U m = 550kV) Test m ethods and requirem ents
IEC Standards continued
119

Appendix 40
British Standards
B S EN 60051-1 (1999) D irect acting indicating analogue electrical m easuring instrum ents and their accessories.
[IEC 60051-1(1997)] D efinitions and general requirem ents com m on for all parts.
B S 89-2 (1990) D irect acting indicating analogue electrical m easuring instrum ents and their accessories.
[IEC 60051-2 (1984)] Specification for special requirem ents for am m eters and voltm eters
[IEC 60051-3 (1984)] Specification for special requirem ents for w attm eters and varm eters.
[IEC 60051-4 (1984)] Specification for special requirem ents for frequency m eters.
[IEC 60051-5 (1985)] Specification for special requirem ents for phase m eters, pow er factor m eters and
synchroscopes.
[IEC 60051-9 (1988)] R ecom m ended test m ethods.
B S 148 (1998) Specification for unused and reclaim ed m ineral insulating oils for transform ers and sw itchgear.
B S 159 (1992) Specification for high-voltage busbars and busbar connections.
B S EN 60076-1 (1997) Pow er transform ers. G eneral
B S 171-5 (1978) Pow er transform ers. Specification for ability to w ithstand short circuit.
[IEC 60076-5 (1976)]
B S EN 60060-2 (1995) H igh-voltage testing techniques. M easuring system s
B S 3938 (1973) Specification for current transform ers
B S 3941 (1975) Specification for voltage transform ers
B S EN 60214 (1998) O n-load tap changers
B S 5207(1975) Specification for sulphur hexafluoride for electrical equipm ent
B S 5209 (1975) C ode of practice for the testing of sulphur hexafluoride taken from electrical equipm ent
B S 5311(1996) H igh-voltage alternating-current circuit-breakers
B S EN 60947-4-1(2001) Specification for low -voltage sw itchgear and controlgear. C ontactors and m otor-starters.
Electrom echanical contactors and m otor-starters
B S 5685-1(1979) Electricity m eters. Specification for class 0.5, 1 and 2 single-phase and polyphase, single rate
and m ulti-rate w att-hour m eters.
B S 5685-2 (1986) Electricity m eters. Specification for single-phase coin operated prepaym ent flat rate and tw o-
part tariff w att-hour m eters of class 2 and fixed charge collectors of class 2.
B S 5685-3 (1986) Electricity m eters. Specification for m eters having class 1 electro-m echanical m axim um dem and
indicators.
B S 5685-4 (1986) Electricity m eters. Specification for class 3 var-hour m eters.
B S 5685-5 (1987) Electricity m eters. Specification for input and output sw itching or logic arrangem ents for m ulti-
rate registers for electricity m eters.
B S 5685-8 (1991) Electricity m eters. Specification for im pulse operated m ultiple registers for use w ith induction
electricity m eters.
B S 5730 (2001) M onitoring and m aintenance guide for m ineral insulating oils in electrical equipm ent.
B S 5992-1(1980) Electrical relays. Specification for contact perform ance of electrical relays
[IEC 60255-0-20 (1974)]
B S 6231(1998) Specification for PVC -insulated cables for sw itchgear and controlgear w iring.
B S EN 60044-2 (1999) Instrum ent transform ers. Inductive voltage transform ers
[IEC 60044-2 (1997)]
120
Singapore Standards
SS 318 (1987) C urrent transform ers for m easurem ent and protection
SS 404 (1997) Pow er transform ers Part 1: G eneral
SS 404 (1997) Pow er transform ers Part 2 : Tem perature rise
SS 404 (2001) Pow er transform ers Part 3: Insulation levels and dielectric tests and external clearances in air
SS 404 (2001) Pow er transform ers Part 5 : A bility to w ithstand short circuit
SS 404 (2000) Pow er transform ers Part 8 : A pplication guide SS 443 (1998) Part 1 : Pow er cables w ith extruded
insulation and their accessories for rated voltages from 1kV (U m = 1.2kV) up to 30kV (U m =
36kV) C ables for rated voltages of 1kV (U m = 1.2kV) and 3kV (U m = 3.6kV) SS ISO 9000 (2000)
Q uality m anagem ent system s Fundam entals and vocabulary
SS ISO 9001 (2000) Q uality m anagem ent system s R equirem ents
SS ISO 9004 (2000) Q uality m anagem ent system s G uidelines for perform ance im provem ents
C P 5 (1998) C ode of practice for electrical installations
C P 10 (1993) C ode of practice for the installation and servicing of electrical fire alarm system s
C P 16 (1991) C ode of practice for earthing
C P 19 (2000) C ode of practice for the installation and m aintenance of em ergency lighting and pow er supply
system s in buildings
C P 31 (1996) C ode of practice for installation, operation, m aintenance, perform ance and constructional
requirem ents of m ains failure standby generating system s
C P 33 (1996) C ode of practice for lightning protection
Other Standards
IEEE C 37.09 Test procedure for A .C high-voltage circuit breakers rated on a sym m etrical current basis
A N SI C 37.09 (1999)
IEEE 32 (1972) N eutral grounding devices, req term and test procedures
ISO 7-2 (2000) Pipe threads w here pressure-tight joints are m ade on the threads Part 2: Verification by m eans
of lim it gauges
A EIC C S2 (1997) Im pregnated paper and lam inated paper polypropylyne insulated cable high-pressure-pipe type
A EIC C S4 (1993) Im pregnated-paper-insulated-low and m edium pressure self-contained liquid filled cable
A STM B 187 (2000) Standard specification for copper bar, bus-bar, rod and shapes
A STM B 3 (2001) Standard specification for soft or annealed copper w ire

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