P-23001 - 23.99.67.0601 - Rev.B - MV-LV Cable Sizing Calculations Report

FEED SERVICES FOR
MENDER PHASE-I PROJECT
MV/LV CABLE SIZING

CALCULATION REPORT
ADCO Document No. 23-99-67-0601
B 16/01/2014 AA MB KM ISSUED FOR EPC TENDER

A 25/10/2013 AA MK KM ISSUED FOR REVIEW
REV. DATE ORIGINATOR REVIEWED APPROVED DESCRIPTION
ORIGINATOR: ADCO TC-ENG
ADCO Doc. No. 23-99-67-0601 PROJ. No. P-23001 Page 1 of 100
FORM 30.99.11.001 A0593301 \9787N\9787N07\0006\0006R0.DOC \LN\...

CONTENTS
1. PROJECT SCOPE.......................................................................................................4
2. PURPOSE OF THIS DOCUMENT...............................................................................4
3. REFERENCES.............................................................................................................5
3.1 CODES AND STANDARDS.............................................................................5
3.2 APPLICABLE DOCUMENTS...........................................................................5
3.3 SHELL STANDARDS.......................................................................................5
3.4 INTERNATIONAL STANDARDS......................................................................6
4. TERMINOLOGY...........................................................................................................7
4.1 DEFINITIONS...................................................................................................7
4.2 ABBREVIATIONS.............................................................................................8
4.3 ORDER OF PRECEDENCE.............................................................................8
5. SERVICE CONDITIONS..............................................................................................9
5.1 ENVIRONMENT CONDITIONS.......................................................................9
5.2 DESIGN TEMPERATURES...........................................................................10
5.3 VOLTAGE LEVELS, FREQUENCY AND NEUTRAL SYSTEM.....................11
6. CABLE INSTALLATION.............................................................................................12
7. SIZING CALCULATIONS...........................................................................................13
7.1 MAXIMUM ADMISSIBLE CONDUCTOR TEMPERATURE...........................13
7.2 CORRECTION FACTORS.............................................................................14
7.3 VOLTAGE DROP CALCULATION.................................................................17
7.4 SHORT CIRCUIT CALCULATION.................................................................18
8. CABLE SIZE SELECTION.........................................................................................20
8.1 MV CABLES...................................................................................................20
8.2 LOW VOLTAGE CABLES..............................................................................21
8.3 CABLE SELECTION CHART.........................................................................22
Document Title: Project No.: P-23001

ADCO Doc No. 23-99-67-0601
MV/LV CABLE SIZING CALCULATION REV. B DATE 16/01/2014
REPORT PAGE 2 of 102
APPENDIX – 1 REFERENCE CONTINUOUS CURRENT CARRYING AMPACITIES.........23
APPENDIX – 1.1 ADMISSIBLE CURRENT CARRYING AMPACITIES OF LV CABLES

(ERA)..........................................................................................................................24
APPENDIX – 1.2 ADMISSIBLE CURRENT CARRYING AMPACITIES OF MV CABLES

(IEC-60502)................................................................................................................26
APPENDIX – 2 CORRECTION FACTORS FOR MV CABLES............................................28
APPENDIX – 3 CORRECTION FACTORS FOR LV CABLES..............................................38
APPENDIX – 4 RESISTANCE AND REACTANCE OF CABLES..........................................43
APPENDIX – 5 TABLE OF SHORT CIRCUIT RATINGS OF CABLES.................................46
APPENDIX – 6 SAMPLE OF MANUAL CALCULATIONS (MV INCOMER CABLES)...........48
SAMPLE OF MANUAL CALCULATIONS..............................................................................49
APPENDIX – 7 CABLE CALCULATION / SELECTION CHART...........................................62

ADCO Doc No. 23-99-67-0601
1. PROJECT SCOPE
1.1 INTRODUCTION
ADCO has been chartered by their shareholders to expand sustainable crude oil production from
its current level of 1.4 million barrels oil per day (MMBOPD) to 1.8 MMBOPD.
Accordingly, ADCO has undertaken projects to develop its marginal fields to help achieve this
target, which involves increasing production at existing Bab & North-East Bab oil fields and
putting on production some undeveloped reservoirs in its portfolio, namely Mender.
Mender is a new undeveloped field located about 50 Km east of Qusahwira oil field and
approximately 240 km south-southeast of Abu Dhabi city. The location of Mender field is
depicted in Figure 1-1 below:
Figure 1-1
As per the development plan, Mender field will be developed by drilling a total of
81 wells (48 ESP lifted Oil Producers, 33 Water Injectors). The new facilities shall
be designed to handle a sustainable production of 20,000 BOPD. Water injection
required to maintain reservoir pressure in LBM, TZA and TZB reservoirs. This shall
be achieved by installing four (4) Water Injection Clusters and building a WI
network feeding the injectors. Production from Mender reservoirs will be exported
to Qusahwira facilities located some 50km away to the West for processing and
export to Asab.
1.2 PURPOSE OF THIS DOCUMENT
This document defines the technical basis, parameters and criteria used for sizing calculation
of Electrical cables for the New FEED Project for Mender Phase-I

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Detailed Electrical cables sizing calculation shall be performed by EPC contractor during EPC
phase of the project.
2. REFERENCES
2.1 CODES AND STANDARDS
The design and Installation shall comply with the latest version of the following codes and
standards:
 ADCO Engineering Standards
 Shell Design and Engineering Practices (DEP)
 International Electrotechnical Commission Recommendations (IEC)
 Institute of Electrical and Electronics Engineers (IEEE)
2.2 APPLICABLE DOCUMENTS
The following specifications form part of this specification and shall be fully complied
ADCO STANDARD AND SHELL DEP AMENDMENTS
Document No. Document Title
30.99.53.0012 ADCO Amendments / Supplements to DEP 33.64.10.10-
GenElectrical engineering Guidelines
30.99.90.0019 ADCO Guidelines for the design of substation
Projects Documents Document Title

23.99.56.0630 Electrical Design Basis
23.99.53.0610 Specification for MV Power, LV Power, Control and
Earthing Cables
23.99.53.0621 Specification for Electrical Installation
23.99.55.0601 Electrical Load List for CGS. GS’s, and wells
2.3 SHELL STANDARDS
The latest Shell DEP standards and their amendments will be applicable as follows but not
limited to:
DEP 33.64.10.10-Gen Electrical Engineering Design, Feb.2011

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2.4 INTERNATIONAL STANDARDS
The latest IEC standards will be applicable as follows but not limited to:
IEC 60183 Guides to the selection of High Voltage Cables
IEC 60228 Conductors of Insulated cables
IEC 60287 Electric Cables – Calculation of the current ratings
IEC 60502-2 Cables for rated voltages from 6kV(Um = 7.2kV) upto 30kV
(Um = 36kV)
ERA REPORT 69-30 Sustained current ratings for PVC insulated cables to BS
Part III 6346
ERA REPORT 69-30 Sustained current ratings for armored cables with
Part V thermosetting insulation to BS 5467 and BS 6724
IEE Wiring Regulations 16th edition

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3. TERMINOLOGY
For the purpose of this document the words and expressions listed below shall have the
meanings assigned them as follows:
3.1 DEFINITIONS
COMPANY : Abu Dhabi Company for Onshore Oil

Operations (ADCO)
CONSULTANT : ADCO Technical Center - Engineering
EPC Contractor : A duly approved entity or company engaged by

COMPANY to perform the EPC works of the
project
PROJECT : FEED for Mender Phase-I
SERVICES : All services to be performed or provided by

CONSULTANT under this AGREEMENT and
such other SERVICES as are related to or
incidental to it
VENDOR / SUPPLIER : The person, firm, company or Corporation to

whom the Purchase Order is placed including
their assignees
Shall The word “shall” is understood to be mandatory

to comply with the requirements.
Should The word “should” is understood to be strongly

recommended to comply with the requirements
3.2 ABBREVIATIONS
AC Alternating Current

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ACDB AC Distribution Board
European Committee for Electro-technical
CENELEC
Standardization
CBS Cement Bound Sand
DC Direct Current
DEP Design and Engineering Practice
GIS Gas Insulated Switchgear
HV High Voltage
IEC International Electro-technical Commission
LV Low Voltage (1000 V and Below)
MV Medium Voltage
PVC Polyvinyl Chloride
OHL Overhead line
SLD Single Line Diagram
UPVC Ultraviolet Resistant PVC
VSD Variable Speed Drive
XLPE Cross Linked Polyethylene
3.3 ORDER OF PRECEDENCE
The order of precedence of various documents shall be as follows:
a) The Laws, Standards and Regulations of the United Arab Emirates
b) ADNOC Codes of Practice
c) Project Data Sheets & Specification
d) This Sizing calculation
e) ADCO Procedures and Codes/Standards
f) ADCO Specifications and Engineering Practices
g) ADCO Amendments to Shell DEPs
h) Shell DEP Specifications
i) Industry Codes and International Standards, such as IEC

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j) International Oil & Gas Industry Codes, Standards and Recommended Practices (all
where specified in the above or, where none of the above is applicable, as proposed
by VENDOR and CONTRACTOR approved by COMPANY only)
k) Internationally recognized oil and gas industry sound practices
Wherever the requirements in this specification are in conflict with any of the standards, the
requirements under this specification shall be binding.
In case of conflicting requirements amongst any of the specified standards, the standard
having the most stringent requirement shall be governing.
In such cases VENDOR shall provide its interpretation in writing of the most stringent
requirement for CONTRACTOR’s and COMPANY’s approval utilizing a Technical Query
sheet.
In all such cases of conflict, COMPANY’s decision shall be final.
4. SERVICE CONDITIONS
4.1 ENVIRONMENT CONDITIONS
The following environmental conditions shall apply:

Wind: a) Prevailing direction From NW
b) Mean Speed 8.0 m/s
c) Maximum Speed 44.7 m/s
d) Airborne Particles Saliferous dust & sand,
frequent sandstorms.
Temperature: a) Maximum Solar 85.0°C
b) Maximum Shade 58.0°C
c) Minimum Shade 4.0°C
d) Average Shade Summer 36.0°C
e) Average Shade Winter 22.0°C
f) Average Shade Yearly 28.0°C
g) Soil at 1 m depth 40°C (max.): 13°C (min.)
Site data for cable
design/calculations: a) Soil Thermal Resistivity 2.5 Km/W
Relative Humidity: a) Maximum at 43°C 95.0 %
b) Average at 54°C 60.0 %
Solar Radiation: 946 W/m²

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Rainfall: a) Frequency Infrequent
b) Maximum 51.0 mm/year
c) Minimum Traces
d) Highest Rate 25.0 mm in 24 hours
(during January – April)
Heavy Dew Formation: Daily throughout the year
Mist: Early morning mists causing evaporative cooling loss.
Average Barometric Pressure: 1.013 bar
Altitude: < 200 m above MSL
Earthquake Zone: The project site is located in a low to moderate seismic

hazard area. The Peak Ground Acceleration determined to be 0.7 m/s² or
0.07 g with a 10 % probability of occurrence in 50 years
4.2 DESIGN TEMPERATURES
Following maximum air temperatures for design of various equipment under shade (or
indoors) shall be considered:
Design Temperature for
Electrical Motors & Generators: 55.0°C
Design Temperature
for Electrical Equipment : a) Outdoor 55.0°C
b) Indoor (in redundant air-
Conditioned substations) 40.0°C
Design Temperature for
Instrumentation Equipment: 60.0°C
Design Temperature
for Electrical Cables: a) Underground Cable 40.0°C
(buried at 1.0 m depth)
b) In air or in unfilled 55.0°C
concrete trench

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4.3 VOLTAGE LEVELS, FREQUENCY AND NEUTRAL SYSTEM
A summary of the utilization voltages and the system wiring for the various consumers are as
given below:
consumers is given below.

VOLTAGE FREQ
SERVICE VOLTAGE PHASE FREQ VARIATION EARTHING
VARIATION
Mains Power
Supplies and 33kV 33kV AC +/- 10% 3-Phase 50Hz +/- 5% Resistive
Overhead lines
DOL motors above

200KW up to 3.3kV AC +/- 10% 3-Phase 50Hz +/- 5% Resistive
<1000kW.
DOL motors above
200KW in remote 3.3kV AC +/- 10% 3-Phase 50Hz +/- 5% Resistive
cluster.
DOL motors above
200KW in remote 3.3 kV AC
cluster. (2.8-3.6kV +/- 10% 3-Phase 50Hz +/- 5% Unearthed
(Submersible AC)
Pump).
Motors above 0.18
kW and including 415V AC +/- 10% 3-Phase 50Hz +/- 5% Solid
200kW.
Process motors with
fractional
415V AC +/- 10% 3-Phase 50Hz +/- 5% Solid
horsepower up to
0.18kW.
Non-Process motors
ranging from
1-Phase
fractional 240V AC +/- 10% 50Hz +/- 5% Solid
horsepower up to
0.18kW.
1-Phase
Anti-Condensation
240V AC +/- 10% w/ 50Hz +/- 5% Solid
heaters.
Neutral
Switchgear
Protection, Control & 110V DC +/- 10% DC DC N/A Unearthed
Spring Charge
1-Phase
Low Voltage
240V AC +/- 10% w/ 50Hz +/- 5% Solid
Contactor Control.
Neutral
1-Phase
Instrumentation. 240V AC +/- 10% w/ 50Hz +/- 5% Solid
Neutral

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The system voltage and frequency will not vary more than:
1. Steady state limits
Voltage : Plus and minus 10 %
Frequency : Plus and minus 5 %
2. Transient limits
Voltage : Plus 10 % and minus 20 %
Frequency : Plus and minus 5 %
During motor starting or restarting condition the voltage drop at other switchboards shall not
fall below 90%.
The above voltage and frequency variations shall not affect the equipment operation.
5. CABLE INSTALLATION
The following methods of cable installations are considered:

1. Directly buried in the ground. Either direct buried in sand or in sand filled concrete
cable trench.
2. Run fastened to covered cable rack or tray or ladder in the open air.
3. Through ducts (e.g. road crossing)
4. Combination of any of the above.

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6. SIZING CALCULATIONS
Cables shall be sized in accordance with the following criteria and the relevant standards
listed in Section 2 of this document.
1. Admissible current ampacity of cables including derating factors.
2. Admissible voltage drop
3. Short circuit ratings of supply system and through fault condition of protective devices
6.1 MAXIMUM ADMISSIBLE CONDUCTOR TEMPERATURE
The maximum conductor operating temperature for XLPE insulated cables is considered as
90°C as per IEC.
6.1.1 REFERENCE CONTINUOUS CURRENT CARRYING AMPACITIES
The current carrying capacities for MV XLPE CU Single core and multicore cables (refer to
Appendix-1.2) as shown in Table-B.2 and Table B.6 of Annex B referred in IEC 60502-2 are
with the following parameters
Ambient air temperature : 30°C
Ground thermal resistivity : 1.5 K.m/W
Ground temperature : 20°C
Depth of laying of cables : 0.8m
Max. Conductor Operating temperature : 90°C
The current carrying capacities for LV XLPE cables (Multi core and single core – 600/1000V),
as shown in Appendix 1.1 (upto 630Sqmm) referred in ERA report are assumed to be
calculated with the following parameters:
Ambient air temperature : 25°C
Ground thermal resistivity : 1.2 K.m/W
Ground temperature : 15°C
Depth of laying (LV Cables) : 0.5m
Max. Conductor Operating temperature : 90°C

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6.2 CORRECTION FACTORS
Appendix – 2 & 3 gives the various Correction Factors under different conditions like variation
of Ground temperature, Soil thermal resistivity, grouping of cables and Variation in Ambient
temperature.
Based on the installation conditions, the following derating factors have been considered.
6.2.1 FOR LV CABLES (LAID IN GROUND) As per Appendix 3, A3.1, A3.3, A3.4 & A3.6
a. Rating factor for ground temperature of 40°C = 0.82 (Table A3.1)

b. Rating factor for soil thermal resistivity of 2.5 Km/W
(for 25 to 150mm² cables)- Varies with size = 0.75 (Table A3.3)
c. Rating factor for direct burial at a depth 1 metre
(for 70 to 300mm² cables)- Varies with size = 0.93 (Table A3.4)
d. Rating factor for grouping of cables = 0.62 (Table A3.6)
(1 Tier Formation of 6 circuit cables with 150mm spacing)
Overall admissible Ampacities correction factor =0.82 x 0.75 x 0.93 x 0.621 = 0.36
6.2.2 FOR HVMV CABLES (LAID IN GROUND)
Single Core Cables as per Appendix 2, A2.2, A2.3, A2.5 & A2.10
a. Rating factor for ground temperature of 40°C = 0.85 (Table A2.2)

e. Rating factor for soil thermal resistivity of 2.5 Km/W = 0.79 (Table A2.5)
(for Cables upto 400 sqmm)
f. Rating factor for direct burial at a depth of 1 metre = 0.97 (Table A2.3)
g. Rating factor for grouping of cables
(for 6 cables with 400mm spacing) = 0.70 (Table A2.10)
Overall admissible ampacities correction factor =0.85 x 0.79 x 0.97 x 0.70 = 0.46
Three Core Cables as per Appendix 2, A2.1, A2.3, A2.7 & A2.9
a. Rating factor for ground temperature of 40°C = 0.85 (Table A2.2

h. Rating factor for soil thermal resistivity of 2.5 Km/W = 0.82 (Table A2.7)
(for Cables upto 400 sqmm)
i. Rating factor for direct burial at a depth of 1 metre = 0.98 (Table A2.3)
j. Rating factor for grouping of cables
(for 6 cables with 400mm spacing) = 0.74 (Table A2.9)
Overall admissible ampacities correction factor =0.85 x 0.82 x 0.98 x 0.74 = 0.50

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6.2.3 FOR MV CABLES (LAID IN AIR)
For MV cables (Single Core Cables) as per Appendix 2, A.2.1 & A2.13
a. Rating factor for ambient temperature of 55°C = 0.76 (Table A2.1)

k. Rating factor for grouping of cables = 0.86 (Table A2.13)
(for a 4 number of three
phase circuits in 3 nos. of
trays with twice diameter of
cables spacing, trefoil vertical
300mm spacing)
Overall admissible ampacities correction factor = 0.76 x 0.86 = 0.65
Three Core Cables as per Appendix 2, A.2.1 & A2.14
l. Rating factor for ambient temperature of 55°C = 0.76 (Table A2.1)

m. Rating factor for grouping of cables = 0.90 (Table A2.14)
(for a 6 number of cables
in 3 nos. of trays with twice
diameter of cables spacing )
Overall admissible ampacities correction factor for LV Cables= 0.76 x 0.90 = 0.68
Note:
1. For MV and LV cables which are directly buried in ground for some part of their length,
current carrying capacities for cables directly buried in ground shall be considered, for
the purpose of cable sizing.
2. All Cable laid inside substation building shall be laid on cable trays.
3. All substation interconnecting cables shall be laid in cable trays
6.2.4 FOR LV CABLES (LAID IN AIR)
Single Core
a. Rating factor for ambient temperature = 0.73 (Table A3.2)

n. Rating factor for grouping of cables =0.90 (Table 2.14 )
(for a 6 number of cables in 3
nos. of trays with twice diameter of
cables spacing )
Overall admissible ampacity correction factor for LV Cables= 0.73 x 0.90 = 0.66
Overall admissible ampacity correction factor for Cables Laid in Air is considered to be 0.65
for LV / MV Cables

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6.2.5 SUMMARY OF DERATING
LAID IN GROUND LAID IN AIR
SINGLE MULTI- SINGLE MULTI-

CORE CORE CORE CORE
CABLES CABLES CABLES CABLES
MV CABLES 0.46 0.50 0.65 0.65

(33KV & 3.3KV)
LV CABLES 0.36 0.36 0.65 0.65

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6.3 VOLTAGE DROP CALCULATION
6.3.1 GENERAL MAXIMUM ALLOWABLE VOLTAGE DROP
The voltage drop in a.c cables shall not be more than 5% based on continuous maximum
current loading and rated voltage.
The following break-down to be considered

a. Motor normal run = 4% (respectively at full load
current)
o. Motor during starting = 20%
p. Incoming feeders = 1% at full rated current of
power transformer
q. Outgoing power feeders = 2%
r. Lighting final branch feeders = 2%
s. 24V DC & AC = 10%
6.3.1.1 FORMULA FOR CALCULATING FEEDER VOLTAGE DROP
delta V = (R.Cos + X.Sin) . I.L (For 3ph loads)
delta V = (R.Cos + X.Sin) . I.L (For 1ph loads)
delta V = I.R.L (For DC loads)
Where, delta V = Voltage drop in Volts (V)

L = Length of cable route in metres
n = Number of cables running in parallel per phase
R = Resistance in Ohm/km @50Hz
X = Reactance in Ohm/km @50Hz
I = Carried current in Amps
Cos = Load Power factor
6.3.1.2 RESISTANCE AND REACTANCE OF CABLES
The Appendix – 4 gives the resistance and reactance of various sizes of cables.

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6.4 SHORT CIRCUIT CALCULATION
Feeder Minimum Cross Section will be Calculated Using the Formula
The cable short circuit current capacity is evaluated as
I²sc =
Where:
Isc = short circuit current (r.m.s) in Amp
T = duration of short-circuit in second
K = constant for the material of conductor
S = area of conductor in mm²
1 = final temperature in °C
0 = initial temperature in °C
 = reciprocal of the temperature
coefficient of resistance of conductor in
°C at 0°C
The constant K and  for copper cables and 1 and 0 for copper/XLPE cables are:
K = 226
 = 234.5
1 = 250°C (for XLPE cable)
0 = 90°C (for XLPE cable)
The short circuit currents for Cu/XLPE cables based on above are given as :
Isc =
i.e. S =
Based on the above, the short circuit withstand of cables shall be calculated based on
following short circuit rating and fault clearing time as below:
1. 33kV cable (Incoming feeder) to 33kV Switchgear : 3 sec
33kV cable (Outgoing feeder) with instantaneous o/c
2 : 0.5sec
protection
3. 33kV OHL Cable : 1 Sec
4. 3.3kV cable (Incoming feeder) to 3.3kV Switchgear : 3 sec
5. 3.3kV cable (Outgoing feeder) with instantaneous o/c : 0.5sec

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protection
3.3V cable (motor feeder) with instantaneous o/c
6. : 0.5sec
protection
7. 415V Emergency Generator : 1sec
8. 415V cable (Incoming feeder) to 415V Switchgear : 1sec
9. 415V motor feeder with instantaneous o/c protection : 0.5 sec
To be
calculated by
10. 415V motor feeder (MCCB) :
EPC contractor
& tabulated
The cable copper/XLPE cable size required for various short circuit current and clearance
times are as given in Appendix 5.

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7. CABLE SIZE SELECTION
The cable sizing shall be based on selection of the largest cable size meeting the following
requirement
1. Short circuit capacity requirements as discussed in section 6.4 and Appendix 5.
2. Voltage drop and current carrying capacity requirements as mentioned in sections 6.3
& 6.2 and evaluated in tabular form in Appendix 7.
7.1 MV CABLES
7.1.1 MV INCOMER FEEDERS
The cable sizing shall be based on selection of the largest cable size meeting the following
requirement.
3. Sample Manual Calculation as in Appendix 6.
7.1.2 HVMV MOTOR FEEDERS
The HVMV Cable sizing for motors feeders shall be based on selection of the largest cable
size meeting the following requirements:
3. The derating factor for HVMV Cables in ground for Single core cable is 0.46
4. The derating factor for HVMV Cables in ground for Three core cable is 0.50
5. The derating factor for HVMV Cables in Air for Single core cable is 0.65
6. The derating factor for HVMV Cables in Air for Three core cable is 0.65
7. Locked Rotor current of 500% is taken into calculations.

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7.1.3 HVMV POWER FEEDERS
The HVMV Cable sizing for power feeders shall be based on selection of the largest cable
size meeting the following requirements:
3. The derating factor for HVMV Cables in ground for Single core cable is 0.46
4. The derating factor for HVMV Cables in ground for Three core cable is 0.50
5. The derating factor for HVMV Cables in Air for Single core cable is 0.65
6. The derating factor for HVMV Cables in Air for Three core cable is 0.65
7.2 LOW VOLTAGE CABLES
7.2.1 OUTGOING MOTOR FEEDERS
The LV Cable sizing for motor feeders shall be based on selection of the largest cable size
meeting the following requirements:
2. Voltage drop (Starting and Running) and current carrying capacity as mentioned in
sections 6.3 & 6.2 and evaluated in tabular form in Appendix 7 with cables in ground.
3. The derating factor for HVLV Cables in ground is 0.36
4. The derating factor for HVLV Cables in Air is 0.65
5. Locked Rotor current of 600% is taken into calculations.

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7.2.2 OUTGOING POWER FEEDERS
The LV Cable sizing for power feeders shall be based on selection of the largest cable size
meeting the following requirements:
& 6.2 and evaluated in tabular form in Appendix 7 with cables in ground and in air.
3. The derating factor for HVLV Cables in ground is 0.36
4. The derating factor for HVLV Cables in Air is 0.65
7.3 CABLE SELECTION CHART
Cables sizes are calculated and cable selection chart is prepared in Appendix-7 ready for
selection of cables for all voltage level applied for Mender Phase-I Project.

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APPENDIX – 1
REFERENCE CONTINUOUS CURRENT CARRYING AMPACITIES

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APPENDIX – 1.1
ADMISSIBLE CURRENT CARRYING AMPACITIES OF LV CABLES (ERA)

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APPENDIX – 1.1
ADMISSIBLE CURRENT CARRYING CAPACITIES OF LV CABLES (ERA)
Rating (Amp) of 3 & 4 Core

Cables (600/1000V) Rating (Amp) of 1 core cable
(From Table-5 of ERA Report (600/1000V) on Trefoil
Nominal 69-30, Part V)
cross-section
In Ground In Air
(sq. mm)
In Ground In Air
(From Table-2 of (From Table-3
ERA Report 69- of ERA Report
30, Part V) 69-30, Part V)
1.5 32 26 - -
2.5 42 35 - -
4 55 47 - -
6 69 59 - -
10 92 82 - -
16 119 107 - -
25 152 140 - -
35 182 172 - -
50 217 209 231 231
70 266 263 284 295
95 319 324 340 362
120 363 376 386 420
150 406 430 431 483
185 458 495 485 555
240 529 584 558 654
300 592 666 623 745
400 667 766- 691 851
500 - - 765 963
630 - - 841 1084

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APPENDIX – 1.2
ADMISSIBLE CURRENT CARRYING AMPACITIES OF MV CABLES (IEC-60502)

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APPENDIX – 1.2
ADMISSIBLE CURRENT CARRYING CAPACITIES OF MV CABLES
Nominal Rating (Amp) of single core Rating (Amp) of 3 Core,

cross- cables (From B.2 of IEC Cables (From B.6 of IEC
section 60502-2) 60502-2)
(sq.mm.) In Ground In Air In Ground In Air
16 109 125 101 110
25 140 163 129 143
35 166 198 154 172
50 196 238 181 205
70 239 296 220 253
95 285 361 263 307
120 323 417 298 352
150 361 473 332 397
185 406 543 374 453
240 469 641 431 529
300 526 735 482 599
400 590 845 541 683
Nominal Rating (Amp) of single core Rating (Amp) of 3 Core,

cross- cables (From B.2 of IEC Cables (From B.6 of IEC
section 60502-2) 60502-2)
(sq.mm.) In Ground In Air In Ground In Air
500 620 890 - -
630 664 994 - -
Note: Ampacities of 500 mm² & 630 mm² taken from DUCAB (BICC) catalogue and de-
rated to IEC-60502 conditions

ADCO Doc No. 23-99-67-0601
APPENDIX – 2
CORRECTION FACTORS FOR HVMV CABLES

ADCO Doc No. 23-99-67-0601
CORRECTION FACTORS FOR HVMV CABLES
A.2.1 RATING FACTORS FOR VARIATION IN AMBIENT AIR TEMPERATURE
FOR CABLES LAID IN THE AIR (FROM TABLE – B.10 OF IEC 60502-2)
Air temperature Rating Factor

(°C) (XLPE)
20 1.08
25 1.04
35 0.96
40 0.91
45 0.87
50 0.82
55 0.76
60 0.71
A.2.2 RATING FACTORS FOR VARIATION IN GROUND TEMPERATURE FOR

CABLES LAID DIRECT IN THE GROUND (FROM TABLE – B.11 OF IEC
60502-2)
Ground Temperature Rating Factor
(°C) (XLPE)
10 1.07
15 1.04
25 0.96
30 0.93
35 0.89
40 0.85
45 0.80
50 0.76

ADCO Doc No. 23-99-67-0601
A.2.3 RATING FACTOR FOR DEPTH OF LAYING OTHER THAN 0.8M FOR
DIRECT BURIED CABLES (FROM TABLE – B.12 OF IEC 60502-2)
Depth of
laying
(Metre)
Single core cables Three- Core
Upto 185 Above 185 Cables
mm² mm²
0.5 1.04 1.06 1.04
0.6 1.02 1.07 1.03
0.8 1.00 1.00 1.00
1.0 0.98 0.97 0.98
1.25 0.96 0.95 0.96
1.5 0.95 0.93 0.95
1.75 0.94 0.91 0.94
2 0.93 0.90 0.93
2.5 0.91 0.88 0.91
3 0.90 0.86 0.90

ADCO Doc No. 23-99-67-0601
A.2.4 RATING FACTOR FOR DEPTH OF LAYING OTHER THAN 0.8M FOR CABLES IN
DUCT (FROM TABLE – B.13 OF IEC 60502-2)
Depth of
laying
(Metre)
Single core cables Three- Core
Upto 185 Above 185 Cables
mm² mm²
0.5 1.04 1.06 1.04
0.6 1.02 1.07 1.03
0.8 1.00 1.00 1.00
1.0 0.98 0.97 0.98
1.25 0.96 0.95 0.96
1.5 0.95 0.93 0.95
1.75 0.94 0.91 0.94
2 0.93 0.90 0.93
2.5 0.91 0.88 0.91
3 0.90 0.86 0.90
A.2.5 AVERAGE RATING FACTOR FOR VARIATION IN THERMAL

RESISTIVITY OF SOIL FOR SINGLE CORE CABLES DIRECTLY BURIED
(FROM TABLE – B.14 OF IEC 60502-2)
Size of Cable Soil Thermal Resistivity in K.m/W
(mm²)
0.7 0.8 0.9 1.0 2 2.5 3
16 1.29 1.24 1.19 1.15 0.89 0.82 0.79
25 1.30 1.25 1.20 1.16 0.89 0.81 0.75
35 1.30 1.25 1.21 1.16 0.89 0.81 0.75
50 1.32 1.26 1.21 1.16 0.89 0.81 0.74
70 1.33 1.27 1.22 1.17 0.89 0.81 0.74
95 1.34 1.28 1.22 1.18 0.89 0.80 0.74
120 1.34 1.28 1.22 1.18 0.88 0.80 0.74
150 1.35 1.28 1.23 1.18 0.88 0.80 0.74
185 1.35 1.29 1.23 1.18 0.88 0.80 0.74
240 1.36 1.29 1.23 1.18 0.88 0.80 0.73
300 1.36 1.30 1.24 1.19 0.88 0.80 0.73
400 1.37 1.30 1.24 1.19 0.88 0.79 0.73

ADCO Doc No. 23-99-67-0601
A.2.6 AVERAGE RATING FACTOR FOR VARIATION IN THERMAL RESISTIVITY
OF SOIL FOR SINGLE CORE CABLES IN DUCT (FROM TABLE – B.15 OF IEC
60502-2)
(mm²)
0.7 0.8 0.9 1.0 2 2.5 3
16 1.20 1.17 1.14 1.11 0.92 0.85 0.79
25 1.21 1.17 1.14 1.12 0.91 0.85 0.79
35 1.21 1.18 1.15 1.12 0.91 0.84 0.79
50 1.21 1.18 1.15 1.12 0.91 0.84 0.789
70 1.22 1.19 1.15 1.12 0.91 0.84 0.78
95 1.23 1.19 1.16 1.13 0.91 0.84 0.78
120 1.23 1.2 1.16 1.13 0.91 0.84 0.78
150 1.24 1.20 1.16 1.13 0.91 0.83 0.78
185 1.24 1.2 1.17 1.13 0.91 0.83 0.78
240 1.25 1.21 1.17 1.14 0.90 0.83 0.77
300 1.25 1.21 1.17 1.14 0.90 0.83 0.77
400 1.25 1.21 1.17 1.14 0.90 0.83 0.77
RESISTIVITY OF SOIL FOR THREE CORE CABLES DIRECTLY BURIED
(FROM TABLE – B.16 OF IEC 60502-2)
(mm²)
0.7 0.8 0.9 1.0 2 2.5 3
16 1.23 1.19 1.16 1.13 0.91 0.84 0.78
25 1.24 1.20 1.16 1.13 0.91 0.84 0.78
35 1.25 1.21 1.17 1.13 0.91 0.83 0.78
50 1.25 1.21 1.17 1.14 0.91 0.83 0.77
70 1.26 1.21 1.18 1.14 0.90 0.83 0.77
95 1.26 1.22 1.18 1.14 0.90 0.83 0.77
120 1.26 1.22 1.18 1.14 0.90 0.83 0.77
150 1.27 1.22 1.18 1.15 0.90 0.83 0.77
185 1.27 1.23 1.18 1.15 0.90 0.83 0.77
240 1.28 1.23 1.19 1.15 0.90 0.83 0.77
300 1.28 1.23 1.19 1.15 0.90 0.82 0.77
400 1.28 1.23 1.19 1.15 0.90 0.82 0.76

ADCO Doc No. 23-99-67-0601
A.2.8 AVERAGE RATING FACTOR FOR VARIATION IN THERMAL RESISTIVITY OF SOIL
FOR THREE CORE CABLES IN DUCTS (FROM TABLE – B.17 OF IEC 60502-2)
(mm²)
0.7 0.8 0.9 1.0 2 2.5 3
16 1.12 1.11 1.09 1.08 0.94 0.89 0.84
25 1.14 1.12 1.10 1.08 0.94 0.89 0.84
35 1.14 1.12 1.10 1.08 0.94 0.88 0.84
50 1.14 1.12 1.10 1.08 0.94 0.88 0.84
70 1.15 1.13 1.11 1.09 0.94 0.88 0.83
95 1.15 1.13 1.11 1.09 0.93 0.88 0.83
120 1.15 1.13 1.11 1.09 0.93 0.88 0.83
150 1.16 1.13 1.11 1.09 0.93 0.88 0.83
185 1.16 1.14 1.11 1.09 0.93 0.87 0.83
240 1.16 1.14 1.12 1.10 0.93 0.87 0.82
300 1.17 1.14 1.12 1.10 0.93 0.87 0.82
400 1.17 1.14 1.12 1.10 0.92 0.86 0.81
A.2.9 GROUP RATING FACTORS FOR THREE-CORE CABLES IN TIER FORMATION
LAID DIRECT IN THE GROUND (FROM TABLE – B.18 OF IEC 60502-2)
Number Spacing between centres of
of Cables cables/trefoils
in group
Touchin 0.2M 0.4M 0.6M 0.8M
g
2 0.80 0.86 0.90 0.92 0.94
3 0.69 0.77 0.82 0.86 0.89
4 0.62 0.72 0.79 0.83 0.87
5 0.57 0.68 0.76 0.81 0.85
6 0.54 0.65 0.74 0.80 0.84
7 0.51 0.63 0.72 0.78 0.83
8 0.49 0.61 0.71 0.78 -
9 0.47 0.60 0.70 0.77 -
10 0.46 0.59 0.69 - -
11 0.45 0.57 0.69 - -
12 0.43 0.56 0.68 - -

ADCO Doc No. 23-99-67-0601
A.2.10 RATING FACTOR FOR GROUPING OF SINGLE CORE CABLES LAID
DIRECT IN THE GROUND (FROM TABLE – B.19 OF IEC 60502-2) :
Number Spacing between centres of
of Cables cables/trefoils
in group
g
2 0.73 0.83 0.88 0.90 0.92
3 0.60 0.73 0.79 0.83 0.86
4 0.54 0.68 0.75 0.80 0.84
5 0.49 0.63 0.72 0.78 0.82
6 0.46 0.61 0.70 0.76 0.81
7 0.43 0.58 0.68 0.75 0.80
8 0.41 0.57 0.67 0.74 -
9 0.39 0.55 0.66 0.73 -
10 0.37 0.54 0.65 - -
11 0.36 0.53 0.64 - -
12 0.35 0.52 0.64 - -
A.2.11 GROUP RATING FACTORS FOR THREE-CORE CABLES IN SINGLE WAY

DUCTS IN HORIZONTAL FORMATION (FROM TABLE – B.20 OF IEC 60502-2)
Number Spacing between duct centres mm
of Cables
in group
g
2 0.85 0.88 0.92 0.94 0.95
3 0.75 0.80 0.85 0.88 0.91
4 0.69 0.75 0.82 0.86 0.89
5 0.65 0.72 0.79 0.84 0.87
6 0.62 0.69 0.77 0.83 0.87
7 0.59 0.67 0.76 0.82 0.86
8 0.57 0.65 0.75 0.81 -
9 0.55 0.64 0.74 0.80 -
10 0.54 0.63 0.73 - -
11 0.52 0.62 0.73 - -
12 0.51 0.61 0.72 - -

ADCO Doc No. 23-99-67-0601
A.2.12 GROUP RATING FACTORS FOR THREE-PHASE CIRCUITS OF SINGLE CORE
CABLES IN SINGLE WAY DUCTS (FROM TABLE – B.21 OF IEC 60502-2)
Number Spacing between duct centres mm
of Cables
in group
g
2 0.78 0.85 0.89 0.91 0.93
3 0.66 0.75 0.81 0.85 0.88
4 0.59 0.70 0.77 0.82 0.86
5 0.55 0.66 0.74 0.80 0.84
6 0.51 0.64 0.72 0.78 0.83
7 0.48 0.61 0.71 0.77 0.82
8 0.46 0.60 0.70 0.76 -
9 0.44 0.58 0.69 0.76 -
10 0.43 0.57 0.68 - -
11 0.42 0.56 0.67 - -
12 0.40 0.55 0.67 - -

ADCO Doc No. 23-99-67-0601
A.2.13 GROUP RATING FACTORS FOR SINGLE-CORE CABLES IN TIER
FORMATION LAID DIRECT IN THE AIR (FROM TABLE – B.23 OF IEC
60502-2)

ADCO Doc No. 23-99-67-0601
A.2.14 GROUP RATING FACTORS FOR M-CORE CABLES IN TIER FORMATION
LAID DIRECT IN THE AIR (FROM TABLE – B.22 OF IEC 60502-2)

ADCO Doc No. 23-99-67-0601
APPENDIX – 3
CORRECTION FACTORS FOR LV CABLES

ADCO Doc No. 23-99-67-0601
APPENDIX – 3
CORRECTION FACTORS FOR LV CABLES (UPTO 400 SQMM)
A.3.1 RATING FACTORS FOR VARIATION IN GROUND TEMPERATURE FOR
CABLES LAID DIRECT IN THE GROUND (FROM TABLE – 61 OF ERA
REPORT 69-30, PART V)
Ground Temperature Rating Factor
(°C) (XLPE)
10 1.03
15 1.00
20 0.97
25 0.93
30 0.89
35 0.86
40 0.82
A.3.2 RATING FACTORS FOR VARIATION IN AMBIENT AIR TEMPERATURE

FOR CABLES LAID IN THE AIR (FROM TABLE – 63 OF ERA REPORT 69-
30, PART V)
Air temperature Rating Factor

(°C) (XLPE)
25 1.00
30 0.96
35 0.92
40 0.88
45 0.83
50 0.78
55 0.73

ADCO Doc No. 23-99-67-0601
RESISTIVITY OF SOIL (FROM BICC CATAGOLUE)
SIZE OF CABLE
Soil Thermal Resistivity in K.m/W
(MM²)
1 1.2 1.5 2.0 2.5
Upto 16 1.04 1.0 0.93 0.84 0.77
From 25 to 150 1.05 1.0 0.92 0.82 0.75
From 185 to
1.06 1.0 0.92 0.81 0.74
400
A.3.4 RATING FACTORS FOR DEPTH OF LAYING

(FROM TABLE 61 OF ERA REPORT 69-30, PART III)
Depth Upto 70MM² Above
of 50MM² to 300M
Laying 300M M²
M²
M
0.50 1.0 1.0 1.0
0.60 0.99 0.98 0.97
0.80 0.97 0.96 0.94
1.00 0.95 0.93 0.92
1.25 0.94 0.93 0.92
1.50 0.93 0.90 0.87
1.75 0.92 0.89 0.86
2.00 0.91 0.88 0.85
2.50 0.90 0.87 0.84
3.00 or 0.89 0.85 0.82
more

ADCO Doc No. 23-99-67-0601
ADCO Doc No. 23-99-67-0601
A.3.5 GROUP RATING FACTORS FOR GROUPING OF CABLES IN
HORIZONTAL FORMATION LAID DIRECT IN THE GROUND (FROM
TABLE 65 OF ERA REPORT 69-30 PART III)
Number Cable to Cable Clearance

of TOUCHIN 0.15 0.3 0.45 0.6M
Circuits G M M M
2 0.81 0.87 0.91 0.93 0.95
3 0.70 0.78 0.84 0.88 0.90
4 0.63 0.74 0.81 0.86 0.89
5 0.59 0.70 0.78 0.84 0.87
6 0.55 0.68 0.77 0.83 0.87
7 0.52 0.66 0.75 0.82 0.86
8 0.50 0.64 0.75 0.81 0.86
9 0.48 0.63 0.74 0.81 0.85
10 0.47 0.62 0.73 0.80 0.85
11 0.45 0.61 0.73 0.80 0.85
12 0.44 0.60 0.72 0.80 0.84

ADCO Doc No. 23-99-67-0601
A.3.6 GROUP RATING FACTORS FOR TWIN OR MULTI-CORE CABLES IN
TIER FORMATION LAID DIRECT IN THE GROUND (FROM TABLE 66 OF
ERA REPORT 69-30 PART III)
FORMATION OF CABLES*
SPACING OF O OO OOO OOO OOO

CABLES
METER OO OO OOO OOO OOO
OOO OOO
OOO
Touching 0.69 0.62 0.53 0.44 0.40

600/1000V Cables
0.15 0.77 0.71 0.62 0.53 0.48
0.30 0.81 0.77 0.68 0.58 0.53
0.45 0.83 0.80 0.72 0.62 0.56
0.60 0.85 0.82 0.74 0.64 0.59
Touching 0.68 0.61 0.52 0.43 0.38

1900/3300V Cables
0.15 0.75 0.69 0.59 0.50 0.46
0.30 0.79 0.74 0.65 0.55 0.50
0.45 0.81 0.77 0.68 0.58 0.53
0.60 0.83 0.79 0.71 0.61 0.56
The figures given are averages over the appropriate range of conductor sizes and types of
cable and relate to the standard depth of laying. For particular cases the group rating factor
may be calculated using the methods given to ERA Report Ref. F/T187 and IEC Publication
Number 287.
*The factors in the last column also apply when the larger dimension of the formation is horizontal

ADCO Doc No. 23-99-67-0601
APPENDIX – 4
RESISTANCE AND REACTANCE OF CABLES

ADCO Doc No. 23-99-67-0601
APPENDIX – 4
RESISTANCE AND REACTANCE OF CABLE
Nominal area of Resistance (Ref. Table II, column-8 Reactance at 50 Hz
of IEC 60228)
R in ohm/kM MH/kM Ohm/kM

Conductor
20°C 90°C (ref. Note 1) ‘L’ ‘X’
(mm2)
(Ref. Note 2)
2.5 7.41 9.50 0.297 0.0932
4 4.61 5.91 0.279 0.0875
6 3.08 3.95 0.266 0.0837
10 1.83 2.35 0.250 0.0785
16 1.15 1.47 0.242 0.0761
25 0.727 0.93 0.244 0.0768
35 0.524 0.67 0.237 0.0743
50 0.387 0.50 0.235 0.0739
70 0.268 0.34 0.231 0.0726
95 0.193 0.25 0.225 0.0708
120 0.153 0.20 0.224 0.0705
150 0.124 0.16 0.226 0.0709
185 0.0991 0.13 0.227 0.0712
240 0.0754 0.10 0.224 0.0703
300 0.0601 0.08 0.222 0.0697
400 0.0470 0.06 0.221 0.0694
500 0.0366 0.047 0.220 0.0691
630 0.0283 0.036 0.218 0.0685
800 0.0221 0.0283 0.216 0.0679

ADCO Doc No. 23-99-67-0601
Notes : 1) The temperature correction factor for copper conductor
= (Ref. IEC 60 228, cl. 6)
= 0.78 (for t = 90°C)
2) ‘X’ can be derived by the formula
X = L.2f / 1000 (where f = 50Hz)

ADCO Doc No. 23-99-67-0601
APPENDIX – 5
TABLE OF SHORT CIRCUIT RATINGS OF CABLES

ADCO Doc No. 23-99-67-0601
APPENDIX - 5
TABLE OF SHORT CIRCUIT RATING OF CABLES
SHORT CU/XLPE CABLE C.S.A IN SQ. MM FOR DURATIONS

CIRCUIT
CURRENT IN
AMPERE
0.01 0.025 0.050 0.100 0.200 0.500 1.000 3.000
sec. sec. sec. sec. sec. sec. sec. sec.
52500 50 70 95 120 185 300 400 800
50000 50 70 95 120 185 300 400 630
40000 35 50 70 95 150 240 300 500
31500 25 35 50 70 120 185 240 400
25000 25 35 50 70 95 150 185 300
15000 16 16 25 35 50 95 120 185
10000 10 16 16 25 35 50 70 120
5000 6 6 10 16 16 25 35 70
2500 2.5 4 4 6 10 16 25 35

ADCO Doc No. 23-99-67-0601
APPENDIX – 6
SAMPLE OF MANUAL CALCULATIONS

ADCO Doc No. 23-99-67-0601
SAMPLE OF MANUAL CALCULATIONS
A.6.1. 33kV INCOMER CABLES FOR 33KV SWITCHGEAR AT CGS-Mender

Feeder from : Intake Power Transformer 32/34.5kV, 31.5/40MVA
Feeder to : 33kV Switchgear at Mender CGS Substation
(33kV 3 Ph, 50Hz, 2000A, 40kA for 3 sec).
Length : 100 metres (Approx.)
Maximum required current from the feeder: 700Amps. (Considering Maximum Plant
Load 40000kVA)
At fault level of 40kA and short circuit fault clearing time of 3sec, the minimum cross
section of cable will be:
(Refer to Section 6.4)
Considering 1C x 630mm² cable laid in ground.

Taking into account the derating factors (as calculated in section 6.2)
The site current rating of the cable is 664 x 0.46 = 305A
So, number of cables running in parallel per phase (n) = 700/305 = 2.30 (i.e. 3Nos.)
Therefore 3 run per phase of 1 core 630sqmm cable is selected per feeder.
Ampacity of feeder is 3x305=915A.
Voltage Drop Calculation:
Delta V % = (R.Cos + X.Sin)* I*L*100 (For 3ph loads)
R = 0.036 Ω/km Cos = 0.8 V = 33000V

X = 0.0685 Ω/km Sin = 0.6 n=3
L = 100 m I = 700 Amp
V.D% = 0.0086%
A.6.2. 33kV FEEDER CABLES TO 33KV OHL

ADCO Doc No. 23-99-67-0601
Feeder from : 33KV GIS Switchgear (HSWG-XXXX-01)
Feeder to : 33kV OHL 2A
Load 20000kVA)

So, number of cables running in parallel per phase (n) = 350/285 = 1.23 (i.e. 2Nos.)
R = 0.047 Ω/km Cos = 0.8 V = 33000V

X = 0.0691 Ω/km Sin = 0.6 n=2
L = 500 m I = 350 Amp
V.D% = 0.0726%
Subject to Short Circuit studies (HOLD)
Cable Size Ampacity (A) Short Circuit current Voltage

(KA) Drop (%)
1 sec 3 sec
2X400 542.8 57.2 33.0 0.0412
2X300 484.0 42.9 24.8 0.0486
A.6.3. 33kV FEEDER CABLES TO AUXILIARY TRANSFORMER

ADCO Doc No. 23-99-67-0601
Feeder to : 33/0.433 KV, 2000 KVA Transformer
Load 2000kVA)

The site current rating of the cable is 469 x 0.46 = 215.7A
So, number of cables running in parallel per phase (n) = 35/215.7 = 0.162 (i.e. 1Nos.)
Ampacity of feeder is 1x215.7=215.7A.
R = 0.10 Ω/km Cos = 0.8 V = 33000V

X = 0.0703 Ω/km Sin = 0.6 n=1
L = 100 m I = 35 Amp
V.D% = 0.0022%
A.6.4. 33kV FEEDER CABLES TO CAPACITOR AND REACTOR (HOLD)

ADCO Doc No. 23-99-67-0601
Feeder to : 5 MVAR CAPACITOR AND REACTOR
Load 6000kVA)

So, number of cables running in parallel per phase (n) = 105/341.9 = 0.31 (i.e. 1Nos.)
Therefore 1 run per phase of 1 core 300 sqmm cable is selected per feeder.
R = 0.08 Ω/km Cos = 0.8 V = 33000V

X = 0.0697 Ω/km Sin = 0.6 n=1
L = 100 m I = 105 Amp
V.D% = 0.0058%
A.6.5. 415V FEEDER CABLES TO EDG

Feeder from : 415V Switchgear (MSWG-XXXX-01)

ADCO Doc No. 23-99-67-0601
Feeder to : 415V, 1000 KVA EDG
(415V, 3 Ph, 50Hz, 2000A, 80kA for 1 sec).
Maximum required current from the feeder: 1391.2Amps. (Considering Maximum Plant
Load 1000kVA)

So, number of cables running in parallel (n) = 1391.2/302.8 = 4.59 (i.e. 5Nos.)
Therefore 5 run of 3 cores 630sqmm cable is selected per feeder.
Ampacity of feeder is 5x302.8= 1514.0A.
R = 0.036 Ω/km Cos = 0.8 V = 415V

X = 0.0685 Ω/km Sin = 0.6 n=5
L = 200 m I = 1391.2 Amp
V.D% = 1.6234%
NOTE: If 1200KVA Generator used, therefore:
Required Current=1669.5 A
Therefore 6 run of 3 cores 630sqmm cable is selected per feeder.
Ampacity of feeder is 6x302.8= 1816.8A.
VD% = 1.6235%
A.6.6. 33kV FEEDER CABLES TO WATER SUPPLY WELLS

Feeder from : 33KV OHL

ADCO Doc No. 23-99-67-0601
Feeder to : 33KV / 3.45KV, 1500KVA Transformer at Water Supply Well - Power
Skid
Load 1500kVA)

So, number of cables running in parallel per phase (n) = 26.25/242 = 0.11 (i.e. 1Nos.)
R = 0.08 Ω/km Cos = 0.8 V = 33000V

X = 0.0697 Ω/km Sin = 0.6 n=1
L = 100 m I = 26.24 Amp
V.D% = 0.0015%

ADCO Doc No. 23-99-67-0601
A.6.7. 33kV FEEDER CABLES TO WELLS CLUSTERS
Feeder to : 33KV / 0.415KV, 1000KVA Transformer at Oil Producers Well’s
Group – Power Skid
Load 1000kVA)

So, number of cables running in parallel per phase (n) = 14.0/242 = 0.058 (i.e.
1Nos.)
R = 0.08 Ω/km Cos = 0.8 V = 33000V

X = 0.0697 Ω/km Sin = 0.6 n=1
L = 100 m I = 14.0 Amp
V.D% = 0.0008%

ADCO Doc No. 23-99-67-0601
A.6.8. 33kV FEEDER CABLES TO GS-1 / GS-2
Feeder to : 33KV / 0.415KV, 500KVA Transformer at GS-1 / GS-2 Substation
Load 500kVA)

So, number of cables running in parallel per phase (n) = 8.75/242 = 0.036 (i.e.
1Nos.)
R = 0.08 Ω/km Cos = 0.8 V = 33000V

X = 0.0697 Ω/km Sin = 0.6 n=1
L = 100 m I = 8.75 Amp
V.D% = 0.0005%

ADCO Doc No. 23-99-67-0601
A.6.9. 3.45kV FEEDER CABLES FROM TRANSFORMER SECONDARY
(WATER SUPPLY WELLS)
Feeder from : 3.45KV Transformer Secondary (1500KVA)

Feeder to : 3.3KV Switchgear
(3.3kV 3 Ph, 50Hz, 630A, 25kA for 3 sec).
Load 1500kVA)
Considering 1C x 300mm² cable laid in Air.

So, number of cables running in parallel per phase (n) = 251/484.25 = 0.518 (i.e.
1Nos.)
R = 0.08 Ω/km Cos = 0.8 V = 3450V

X = 0.0697 Ω/km Sin = 0.6 n=1
L = 100 m I = 251 Amp
V.D% = 0.1333%

ADCO Doc No. 23-99-67-0601
A.6.10. 3.3kV FEEDER CABLES TO ESP MOTOR
Feeder from : 3.3KV Switchgear

Feeder to : 3.3KV, 750HP ESP Motor
(3.3kV 3 Ph, 50Hz, 25kA for 0.25 sec).
Maximum required current from the feeder: 122.5 Amps. (Considering Maximum
Plant Load 1500kVA)
At fault level of 25kA and short circuit fault clearing time of 0.25sec, the minimum
cross section of cable will be:
Considering 1C x 120mm² cable laid in Ground.

So, number of cables running in parallel per phase (n) = 122.5/138.96 = 0.88 (i.e.
1Nos.)
R = 0.20 Ω/km Cos = 0.8 V = 3300V

X = 0.0705 Ω/km Sin = 0.6 n=1
L = 100 m I = 122.5 Amp
V.D% = 0.1301%

ADCO Doc No. 23-99-67-0601
A.6.11. 3.3kV FEEDER CABLES TO AUXILIARY TRANSFORMER
Feeder from : 3.3KV Switchgear

Feeder to : 3.3/0.433KV Auxiliary Transformer, 100KVA
Auxiliaries Load 100kVA)

1Nos.)
R = 0.13 Ω/km Cos = 0.8 V = 3300V

X = 0.0712 Ω/km Sin = 0.6 n=1
L = 100 m I = 17.5 Amp
V.D% = 0.0.135%

ADCO Doc No. 23-99-67-0601
A.6.12. 415V FEEDER CABLES FROM AUXILIARY TRANSFORMER
SECONDARY
Feeder from : 415V Transformer Secondary (100KVA)

Feeder to : 415V Switchgear
Auxiliaries Load 100kVA)

1Nos.)
R = 0.13 Ω/km Cos = 0.8 V = 3300V

X = 0.0712 Ω/km Sin = 0.6 n=1
L = 100 m I = 139.12 Amp
V.D% = 0.8519%

ADCO Doc No. 23-99-67-0601
A.6.13. 415V FEEDER CABLES TO TRANSFORMERS
LAID IN GROUND LAID IN AIR

REQUIRE VD
LOAD VD (%)
D FEEDER (%) FEEDER
(MVA AT
CURRENT CABLE AMPACIT AT CABLE AMPACIT
) L=100
(A) Y (A) L=100 Y (A)
m
m
3 X 1C 3 X 1C
1.6 2,226.0 630mm 2,523.0 2.16 630m 3,252.0 2.16
2 m2
3 X 1C 2 X 1C
1.25 1,739.0 630mm 2,523.0 1.69 630m 2,168.0 1.69
2 m2
2 X 1C 2 X 1C
1.0 1,391.0 630mm 1,681.0 2.03 630m 2,168.0 2.03
2 m2
2 X 1C 2 X 1C
0.8 1,113.0 630mm 1,681.0 1.62 630m 2,168.0 1.62
2 m2
1 X 1C 1 X 1C
0.5 696.0 630mm 841.0 1.02 630m 1,084.0 1.02
2 m2
A6.14 VSDS
To be added and performed by EPC Contractor in-line with vendor recommendation.
A6.15 HARMONIC FILTERS / CAPACITOR BANKS (HOLD)

To be added and performed by EPC Contractor in-line with vendor recommendation.

ADCO Doc No. 23-99-67-0601
APPENDIX – 7
CABLE CALCULATION / SELECTION CHART

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.1
33kV CABLES SELECTION CHART FOR POWER FEEDER LAID IN GROUND

ADCO Doc No. 23-99-67-0601
APPENDIX 7.1
33 KV CABLE SELECTION CHART (POWER FEEDER)
(LAID IN GROUND)
CABLES HAVING COPPER CONDUCTORS
MAXIMUM PERMISSIBLE VOLT DROP = 2% AT FEEDER F.L.C.
DERATING FACTOR = 0.5
2
CABLE CSA IN mm 3x50 3x150 3x185 3x240 2x3x120 2x3x150 2x3x185 2x3x240 1x240 1x300 1X 400 1x500 1x630
STANDARD CABLE RATING (Refer
181 332 374 431 596 664 748 862 496 526 590 620 664
Appendix-1)
SITE CABLE RATING 90.5 166 187 215.5 298 332 374 431 248 263 295 310 332
CABLE RESIST. IN OHM / km (20˚ C) 0.387 0.124 0.0991 0.0754 0.153 0.124 0.0991 0.0754 0.0754 0.0601 0.047 0.0366 0.0283
CABLE RESISTANCE IN OHM / km 0.5 0.16 0.13 0.1 0.2 0.16 0.13 0.1 0.1 0.08 0.06 0.047 0.036
CABLE INDUCTANCE IN mH / km 0.235 0.226 0.227 0.224 0.224 0.226 0.227 0.224 0.224 0.3056 0.221 0.356 0.343
CABLE REACTANCE IN OHM / km 0.0739 0.0709 0.0712 0.0703 0.0705 0.0709 0.0712 0.0703 0.123 0.096 0.0697 0.1118 0.1078
FEEDER FEEDER
MAXIMUM PERMISSIBLE ROUTE LENGTH IN METER
RATING F.L.C. COS SIN
kW AMPS PHI PHI
1000.00 21.34 0.85 0.53 38477 102892 120481 146080 172253 205783 240962 292160 118913 150232 203086 180029 203565
4000.00 85.34 0.85 0.53 0 25723 30120 36520 43063 51446 60240 73040 29728 45007 50772 45007 50891
5000.00 106.68 0.85 0.53 0 20578 24096 29216 34451 41157 48192 58432 23783 36006 40617 36006 40713
6000.00 128.02 0.85 0.53 0 17149 20080 24347 28709 34297 40160 48693 19819 30005 33848 30005 33928
7000.00 149.35 0.85 0.53 0 0 17212 20869 24608 29398 34423 41737 16988 25718 29012 25718 29081
8000.00 170.69 0.85 0.53 0 0 0 18260 21532 25723 30120 36520 14864 22504 25386 22504 25446
9000.00 192.02 0.85 0.53 0 0 0 0 19139 22865 26774 32462 13213 20003 22565 20003 22618
10000.00 213.36 0.85 0.53 0 0 0 0 0 20578 24096 29216 11891 18003 20309 18003 20357
11000.00 234.70 0.85 0.53 0 0 0 0 0 0 21906 26560 10810 16366 18462 16366 18506
12000.00 256.03 0.85 0.53 0 0 0 0 0 0 0 24347 9909 15002 16924 15002 16964
13000.00 277.37 0.85 0.53 0 0 0 0 0 0 0 22474 9147 13848 15622 13848 15659
14000.00 298.70 0.85 0.53 0 0 0 0 0 0 0 0 8494 12859 14506 12859 14540
15000.00 320.04 0.85 0.53 0 0 0 0 0 0 0 0 0 12002 13539 12002 13571
16000.00 341.37 0.85 0.53 0 0 0 0 0 0 0 0 0 0 12693 11252 12723
18000.00 384.05 0.85 0.53 0 0 0 0 0 0 0 0 0 0 11283 10002 11309
20000.00 426.72 0.85 0.53 0 0 0 0 0 0 0 0 0 0 9001 10178
25000.00 533.40 0.85 0.53 0 0 0 0 0 0 0 0 0 0 7201 8143

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.2
33kV CABLES SELECTION CHART FOR POWER FEEDER LAID IN AIR

ADCO Doc No. 23-99-67-0601
APPENDIX 7.2
33 KV CABLE SELECTION CHART (POWER FEEDER)
(LAID IN AIR)
MAXIMUM PERMISSIBLE VOLT DROP = 2% AT FEEDER F.L.C.,
2
CABLE CSA IN mm 3x50 3x70 3x95 3x120 3x150 3x185 3x240
205 253 307 352 397 453 529
Appendix-1)
SITE CABLE RATING 133.25 164.45 199.55 228.8 258.05 294.45 343.85
CABLE RESIST. IN OHM / km (20˚ C) 0.387 0.268 0.193 0.153 0.124 0.0991 0.0754
CABLE RESISTANCE IN OHM / km 0.5 0.34 0.25 0.2 0.16 0.13 0.1
CABLE INDUCTANCE IN mH / km 0.235 0.231 0.225 0.224 0.226 0.227 0.224
CABLE REACTANCE IN OHM / km 0.0739 0.0726 0.0708 0.0705 0.0709 0.0712 0.0703
FEEDER FEEDER
RATING F.L.C. COS SIN MAXIMUM PERMISSIBLE ROUTE LENGTH IN METER
kW AMPS PHI PHI
1000.00 21.34 0.85 0.53 38477 54537 71432 86126 102892 120481 146080
4000.00 85.34 0.85 0.53 9619 13634 17858 21532 25723 30120 36520
5000.00 106.68 0.85 0.53 7695 10907 14286 17225 20578 24096 29216
6000.00 128.02 0.85 0.53 0 9089 11905 14354 17149 20080 24347
7000.00 149.35 0.85 0.53 0 7791 10205 12304 14699 17212 20869
8000.00 170.69 0.85 0.53 0 0 8929 10766 12861 15060 18260
9000.00 192.02 0.85 0.53 0 0 0 9570 11432 13387 16231
10000.00 213.36 0.85 0.53 0 0 0 0 10289 12048 14608
11000.00 234.70 0.85 0.53 0 0 0 0 9354 10953 13280
12000.00 256.03 0.85 0.53 0 0 0 0 0 10040 12173
13000.00 277.37 0.85 0.53 0 0 0 0 0 0 11237
14000.00 298.70 0.85 0.53 0 0 0 0 0 0 10434
15000.00 320.04 0.85 0.53 0 0 0 0 0 0 0
16000.00 341.37 0.85 0.53 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.3
3.3kV CABLES SELECTION CHART FOR POWER FEEDER LAID IN GROUND

ADCO Doc No. 23-99-67-0601
APPENDIX 7.3
3.3 KV CABLE SELECTION CHART (POWER FEEDER)
(LAID IN GROUND)
DERATING FACTOR = 0.46 FOR MULTI-CORE CABLES
'= 0.5 FOR SINGLE CORE CABLES
2
CABLE CSA IN mm 3x120 3x150 3x185 3x240 2x3x120 2x3x150 2x3x185 1x500 1x630
298 332 374 431 596 664 748 620 664
Appendix-1)
SITE CABLE RATING 137.08 152.72 172.04 198.26 274.16 305.44 344.08 310 332
CABLE RESIST. IN OHM / km (20˚ C) 0.153 0.124 0.0991 0.0754 0.153 0.124 0.0991 0.0366 0.0283
CABLE RESISTANCE IN OHM / km 0.2 0.16 0.13 0.1 0.2 0.16 0.13 0.047 0.036
CABLE INDUCTANCE IN mH / km 0.224 0.226 0.227 0.224 0.224 0.226 0.227 0.356 0.343
CABLE REACTANCE IN OHM / km 0.0705 0.0709 0.0712 0.0703 0.0705 0.0709 0.0712 0.1118 0.1078
FEEDER FEEDER
kW AMPS PHI PHI
500.00 106.68 0.85 0.53 1723 2058 2410 2922 3445 4116 4819 3601 4071
1000.00 213.36 0.85 0.53 0 1029 1205 1461 1723 2058 2410 1800 2036
1500.00 320.04 0.85 0.53 0 0 803 974 1148 1372 1606 1200 1357
2000.00 426.72 0.85 0.53 0 0 0 730 861 1029 1205 900 1018
2500.00 533.40 0.85 0.53 0 0 0 0 689 823 964 720 814
3000.00 640.08 0.85 0.53 0 0 0 0 574 686 803 600 679
3500.00 746.76 0.85 0.53 0 0 0 0 492 588 688 514 582
4000.00 853.44 0.85 0.53 0 0 0 0 0 514 602 450 509
4500.00 960.12 0.85 0.53 0 0 0 0 0 0 535 400 452
5000.00 1066.80 0.85 0.53 0 0 0 0 0 0 0 360 407
5500.00 1173.48 0.85 0.53 0 0 0 0 0 0 0 0 370
6000.00 1280.16 0.85 0.53 0 0 0 0 0 0 0 0 339

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.4
3.3kV CABLES SELECTION CHART FOR POWER FEEDER LAID IN AIR

ADCO Doc No. 23-99-67-0601
APPENDIX 7.4
3.3 KV CABLE SELECTION CHART (POWER FEEDER)
(LAID IN AIR)
2
CABLE CSA IN mm 3x120 3x150 3x185 3x240
STANDARD CABLE RATING (Refer Appendix-1) 298 332 374 431
SITE CABLE RATING 193.70 215.80 243.10 280.15
CABLE RESIST. IN OHM / km (20˚ C) 0.153 0.124 0.0991 0.0754
CABLE RESISTANCE IN OHM / km 0.2 0.16 0.13 0.1
CABLE INDUCTANCE IN mH / km 0.224 0.226 0.227 0.224
CABLE REACTANCE IN OHM / km 0.0705 0.0709 0.0712 0.0703
FEEDER FEEDER COS SIN MAXIMUM PERMISSIBLE ROUTE LENGTH IN METER
RATING kW F.L.C. AMPS PHI PHI
500.00 106.68 0.85 0.53 1723 2058 2410 2922
1000.00 213.36 0.85 0.53 0 1029 1205 1461
1500.00 320.04 0.85 0.53 0 686 803 974
2000.00 426.72 0.85 0.53 0 514 602 730
2500.00 533.40 0.85 0.53 0 0 482 584
3000.00 640.08 0.85 0.53 0 0 402 487
3500.00 746.76 0.85 0.53 0 0 0 417
4000.00 853.44 0.85 0.53 0 0 0 365
4500.00 960.12 0.85 0.53 0 0 0 0
5000.00 1066.80 0.85 0.53 0 0 0 0
5500.00 1173.48 0.85 0.53 0 0 0 0
6000.00 1280.16 0.85 0.53 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.5
3.3kV CABLES SELECTION CHART FOR MOTOR FEEDER LAID IN GROUND
(MOTOR RUNING)

ADCO Doc No. 23-99-67-0601
APPENDIX 7.5
3.3 KV CABLE SELECTION CHART (MOTOR RUNNING)
(LAID IN GROUND)
MAXIMUM PERMISSIBLE VOLT DROP = 4% AT MOTOR F.L.C.
MAXIMUM PERMISSIBLE VOLT DROP = 20% AT MOTOR L.R.C.
2
CABLE CSA IN mm 3x35 3x50 3x70 3x95 3x120 3x150 3x185 3x240
STANDARD CABLE RATING (Refer Appendix-1) 154 181 220 263 298 332 374 431
SITE CABLE RATING 77.00 90.50 110.00 131.50 149.00 166.00 187.00 215.50
CABLE RESIST. IN OHM / km (20˚ C) 0.524 0.387 0.268 0.193 0.153 0.124 0.0991 0.0754
CABLE RESISTANCE IN OHM / km 0.67 0.5 0.34 0.25 0.2 0.16 0.13 0.1
CABLE INDUCTANCE IN mH / km 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.224
CABLE REACTANCE IN OHM / km 0.0743 0.0739 0.0726 0.0708 0.0705 0.0709 0.0712 0.0703
FEEDER FEEDER MOTOR
RATING F.L.C. L.R.C. COS SIN MAXIMUM PERMISSIBLE ROUTE LENGTH IN METER
kW AMPS AMPS PHI PHI
250.00 53.34 266.70 0.85 0.53 2347 3078 4363 5715 6890 8231 9638 11686
355.00 75.74 378.71 0.85 0.53 0 0 3072 4024 4852 5797 6788 8230
400.00 85.34 426.72 0.85 0.53 0 0 2727 3572 4306 5145 6024 7304
500.00 106.68 533.40 0.86 0.51 0 0 0 0 3445 4116 4819 5843
600.00 128.02 640.08 0.87 0.49 0 0 0 0 0 3430 4016 4869
700.00 149.35 746.76 0.87 0.49 0 0 0 0 0 0 3442 4174
800.00 170.69 853.44 0.87 0.49 0 0 0 0 0 0 0 3652
900.00 192.02 960.12 0.87 0.49 0 0 0 0 0 0 0 0
1000.00 213.36 1066.80 0.87 0.49 0 0 0 0 0 0 0 0
1100.00 234.70 1173.48 0.87 0.49 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.6
3.3kV CABLES SELECTION CHART FOR MOTOR FEEDER LAID IN GROUND
(MOTOR STARTING)

ADCO Doc No. 23-99-67-0601
APPENDIX 7.6
3.3KV CABLE SELECTION CHART (MOTOR STARTING)
(LAID IN GROUND)
MAXIMUM PERMISSIBLE VOLT DROP = 20% AT MOTOR L.R.C
2
CABLE CSA IN mm 3x35 3x50 3x70 3x95 3x120 3x150 3x185 3x240
STANDARD CABLE RATING (Refer Appendix-1) 154 181 220 263 298 332 374 431
SITE CABLE RATING 77.00 90.50 110.00 131.50 149.00 166.00 187.00 215.50
CABLE RESIST. IN OHM / km (20˚ C) 0.524 0.387 0.268 0.193 0.153 0.124 0.0991 0.0754
CABLE RESISTANCE IN OHM / km 0.67 0.5 0.34 0.25 0.2 0.16 0.13 0.1
CABLE INDUCTANCE IN mH / km 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.224
CABLE REACTANCE IN OHM / km 0.0743 0.0739 0.0726 0.0708 0.0705 0.0709 0.0712 0.0703
FEEDER FEEDER MOTOR
250.00 53.34 266.70 0.15 0.99 8209 9643 11628 13280 14317 15169 15877 16889
355.00 75.74 378.71 0.15 0.99 0 0 8189 9352 10082 10682 11181 11894
400.00 85.34 426.72 0.15 0.99 0 0 7267 8300 8948 9481 9923 10556
500.00 106.68 533.40 0.15 0.99 0 0 0 0 7159 7584 7939 8445
600.00 128.02 640.08 0.15 0.99 0 0 0 0 0 6320 6616 7037
700.00 149.35 746.76 0.15 0.99 0 0 0 0 0 0 5670 6032
800.00 170.69 853.44 0.15 0.99 0 0 0 0 0 0 0 5278
900.00 192.02 960.12 0.15 0.99 0 0 0 0 0 0 0 0
1000.00 213.36 1066.80 0.15 0.99 0 0 0 0 0 0 0 0
1100.00 234.70 1173.48 0.15 0.99 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.7
415V CABLES SELECTION CHART FOR POWER FEEDERS IN GROUND

ADCO Doc No. 23-99-67-0601
APPENDIX 7.7
415V CABLE SELECTION CHART (POWER FEEDER)
(LAID IN GROUND)
DERATlNG FACTOR = 0.36
2
CABLE CSA IN mm 3x2.5 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x150 3x185 3x240 2x3x95 2x3x120 2x3x150 2x3x185 2x3x240 1x300 1x400 1x500 1x630
42.0 55 69 92 119 152 182 217 266 319 363 406 458 529.0 638.0 726.0 812.0 916.0 1058.0 623.0 691.0 770.0 841.0
Appendix-1)
SITE CABLE RATING 15.1 19.8 24.8 33.1 42.8 54.7 65.5 78.1 95.8 114.8 130.7 146.2 164.9 190.4 229.7 261.4 292.3 329.8 380.9 224.3 248.8 277.2 302.8
CABLE RESIST. IN OHM / km (20˚ C) 7.410 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.124 0.099 0.075 0.193 0.153 0.124 0.099 0.075 0.060 0.047 0.037 0.028
CABLE RESISTANCE IN OHM / km 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.100 0.250 0.200 0.160 0.130 0.100 0.080 0.060 0.047 0.036
CABLE INDUCTANCE IN mH / km 0.297 0.279 0.266 0.250 0.242 0.244 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.224 0.225 0.224 0.226 0.227 0.224 0.306 0.299 0.356 0.343
CABLE REACTANCE IN OHM / km 0.093 0.088 0.084 0.079 0.076 0.077 0.074 0.074 0.073 0.071 0.071 0.071 0.071 0.070 0.071 0.071 0.071 0.071 0.070 0.096 0.094 0.112 0.108
FEEDER FEEDER
KW AMPS PHI PHI
0.25 0.66 0.80 0.60 957 1535 2290 3829 6073 9476 13000 17158 24575 32523 39596 47865 56755 69978 65047 79192 95730 113510 139955 75084 90642 95670 110402
0.37 0.95 0.80 0.60 659 1056 1576 2636 4181 6524 8949 11812 16918 22390 27259 32952 39071 48174 44780 54517 65903 78143 96348 51690 62400 65861 76004
0.55 1.32 0.80 0.60 476 763 1139 1905 3021 4714 6466 8535 12224 16178 19696 23809 28231 34809 32356 39392 47619 56463 69617 37349 45088 47589 54917
0.75 1.74 0.80 0.60 361 579 864 1445 2292 3576 4905 6475 9273 12273 14942 18062 21417 26407 24546 29884 36125 42834 52813 28334 34204 36102 41661
1.10 2.47 0.80 0.60 254 407 608 1016 1612 2515 3451 4554 6523 8633 10510 12705 15065 18575 17266 21020 25410 30130 37149 19930 24060 25394 29305
1.50 3.34 0.80 0.60 188 302 450 753 1194 1862 2555 3372 4830 6392 7782 9407 11155 13753 12784 15564 18815 22309 27507 14757 17815 18803 21699
2.20 4.72 0.80 0.60 133 214 319 533 845 1319 1809 2388 3420 4526 5510 6660 7898 9737 9051 11020 13321 15795 19475 10448 12613 13313 15363
3.00 6.34 0.80 0.60 99 159 237 396 628 980 1345 1775 2542 3365 4097 4952 5872 7240 6730 8193 9904 11744 14480 7768 9378 9898 11422
3.70 7.75 0.80 0.60 81 130 194 324 514 802 1100 1452 2080 2753 3352 4052 4804 5924 5506 6704 8104 9609 11847 6356 7673 8099 9346
4.00 8.18 0.80 0.60 77 123 184 307 487 760 1042 1376 1971 2608 3175 3838 4551 5611 5216 6350 7676 9102 11223 6021 7268 7672 8853
5.50 9.33 0.80 0.60 67 108 161 269 427 666 914 1207 1728 2287 2785 3366 3991 4921 4574 5569 6732 7983 9842 5280 6374 6728 7764
7.50 14.91 0.80 0.60 42 68 101 169 267 417 572 755 1082 1432 1743 2107 2499 3081 2864 3486 4215 4997 6162 3306 3991 4212 4860
11.00 21.86 0.82 0.57 0 0 67 112 178 278 382 505 724 960 1171 1418 1686 2085 1920 2342 2837 3371 4170 2255 2735 2910 3372
15.00 28.20 0.82 0.57 0 0 0 87 138 216 296 391 561 744 908 1100 1307 1616 1489 1815 2199 2614 3233 1748 2121 2256 2614
18.50 34.55 0.82 0.57 0 0 0 0 113 176 242 319 458 608 741 898 1067 1319 1215 1482 1795 2134 2639 1427 1731 1841 2134
22.00 41.08 0.82 0.57 0 0 0 0 95 148 203 269 385 511 623 755 897 1109 1022 1246 1510 1794 2219 1200 1456 1548 1795
30.00 55.65 0.82 0.57 0 0 0 0 0 109 150 198 284 377 460 557 662 819 754 920 1114 1324 1638 886 1075 1143 1325
37.00 68.63 0.82 0.57 0 0 0 0 0 0 0 161 231 306 373 452 537 664 612 746 904 1074 1328 718 871 927 1074
45.00 81.30 0.82 0.57 0 0 0 0 0 0 0 0 195 258 315 381 453 561 516 630 763 907 1121 606 736 782 907
55.00 95.65 0.84 0.54 0 0 0 0 0 0 0 0 163 216 264 320 381 473 432 527 640 763 946 516 629 674 785
75.00 130.43 0.84 0.54 0 0 0 0 0 0 0 0 0 0 193 235 280 347 317 387 470 559 694 378 461 494 575
90.00 156.51 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 233 289 264 322 391 466 578 315 384 412 480
110.00 191.29 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 237 216 264 320 381 473 258 314 337 392
132.00 229.55 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 180 220 267 318 394 215 262 281 327
150.00 254.49 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 197 239 285 354 193 236 254 296
160.00 271.45 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 224 267 331 181 221 238 278
185.00 313.87 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 231 287 157 191 206 240
200.00 339.32 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 265 145 177 190 222
250.00 424.15 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 178

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.8
415V CABLES SELECTION CHART FOR POWER FEEDERS IN AIR

ADCO Doc No. 23-99-67-0601
APPENDIX 7.8
(LAID IN AIR)
2
CABLE CSA IN mm 3x2.5 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x150 3x185 3x240 2x3x120 2x3x150 2x3x185 2x3x240
35 47 59 82 107 140 172 209 263 324 376 430 495 584 752 860 990 1168
Appendix-1)
SITE CABLE RATING 22.75 30.55 38.35 53.30 69.55 91.00 111.80 135.85 170.95 210.60 244.40 279.50 321.75 379.60 488.80 559.00 643.50 759.20
CABLE RESIST. IN OHM / km (20˚ C) 7.410 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.124 0.099 0.075 0.153 0.124 0.099 0.075
CABLE RESISTANCE IN OHM / km 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.100 0.200 0.160 0.130 0.100
CABLE INDUCTANCE IN mH / km 0.297 0.279 0.266 0.250 0.242 0.244 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.224 0.224 0.226 0.227 0.224
CABLE REACTANCE IN OHM / km 0.093 0.088 0.084 0.079 0.076 0.077 0.074 0.074 0.073 0.071 0.071 0.071 0.071 0.070 0.071 0.071 0.071 0.070
FEEDER FEEDER
kW AMPS PHI PHI
0.25 0.66 0.80 0.60 957 1535 2290 3829 6073 9476 13000 17158 24575 32523 39596 47865 56755 69978 79192 95730 113510 139955
0.37 0.95 0.80 0.60 659 1056 1576 2636 4181 6524 8949 11812 16918 22390 27259 32952 39071 48174 54517 65903 78143 96348
0.55 1.32 0.80 0.60 476 763 1139 1905 3021 4714 6466 8535 12224 16178 19696 23809 28231 34809 39392 47619 56463 69617
0.75 1.74 0.80 0.60 361 579 864 1445 2292 3576 4905 6475 9273 12273 14942 18062 21417 26407 29884 36125 42834 52813
1.10 2.47 0.80 0.60 254 407 608 1016 1612 2515 3451 4554 6523 8633 10510 12705 15065 18575 21020 25410 30130 37149
1.50 3.34 0.80 0.60 188 302 450 753 1194 1862 2555 3372 4830 6392 7782 9407 11155 13753 15564 18815 22309 27507
2.20 4.72 0.80 0.60 133 214 319 533 845 1319 1809 2388 3420 4526 5510 6660 7898 9737 11020 13321 15795 19475
3.00 6.34 0.80 0.60 99 159 237 396 628 980 1345 1775 2542 3365 4097 4952 5872 7240 8193 9904 11744 14480
3.70 7.75 0.80 0.60 81 130 194 324 514 802 1100 1452 2080 2753 3352 4052 4804 5924 6704 8104 9609 11847
4.00 8.18 0.80 0.60 77 123 184 307 487 760 1042 1376 1971 2608 3175 3838 4551 5611 6350 7676 9102 11223
5.50 9.33 0.80 0.60 67 108 161 269 427 666 914 1207 1728 2287 2785 3366 3991 4921 5569 6732 7983 9842
7.50 14.91 0.80 0.60 42 68 101 169 267 417 572 755 1082 1432 1743 2107 2499 3081 3486 4215 4997 6162
11.00 21.86 0.82 0.57 0 45 67 112 178 278 382 505 724 960 1171 1418 1686 2085 2342 2837 3371 4170
15.00 28.20 0.82 0.57 0 35 52 87 138 216 296 391 561 744 908 1100 1307 1616 1815 2199 2614 3233
18.50 34.55 0.82 0.57 0 0 42 71 113 176 242 319 458 608 741 898 1067 1319 1482 1795 2134 2639
22.00 41.08 0.82 0.57 0 0 0 60 95 148 203 269 385 511 623 755 897 1109 1246 1510 1794 2219
30.00 55.65 0.82 0.57 0 0 0 0 70 109 150 198 284 377 460 557 662 819 920 1114 1324 1638
37.00 68.63 0.82 0.57 0 0 0 0 0 89 122 161 231 306 373 452 537 664 746 904 1074 1328
45.00 81.30 0.82 0.57 0 0 0 0 0 75 103 136 195 258 315 381 453 561 630 763 907 1121
55.00 95.65 0.84 0.54 0 0 0 0 0 0 86 113 163 216 264 320 381 473 527 640 763 946
75.00 130.43 0.84 0.54 0 0 0 0 0 0 0 0 119 158 193 235 280 347 387 470 559 694
90.00 156.51 0.84 0.54 0 0 0 0 0 0 0 0 99 132 161 196 233 289 322 391 466 578
110.00 191.29 0.84 0.54 0 0 0 0 0 0 0 0 0 108 132 160 191 237 264 320 381 473
132.00 229.55 0.84 0.54 0 0 0 0 0 0 0 0 0 0 110 133 159 197 220 267 318 394
150.00 254.49 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 119 142 177 197 239 285 354
160.00 271.45 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 133 166 184 224 267 331
185.00 313.87 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 115 143 159 194 231 287
200.00 339.32 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 133 147 179 214 265
250.00 424.15 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 118 143 171 212

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.9
415V CABLES SELECTION CHART FOR MOTOR FEEDERS IN GROUND
(MOTOR RUNNING)

ADCO Doc No. 23-99-67-0601
APPENDIX 7.9
415V CABLE SELECTION CHART (MOTOR RUNNING)
(LAIND IN GROUND)
2
CABLE CSA IN mm 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x150 3x185 2x3x95 2x3x120 2x3x150 2x3x185
STANDARD CABLE RATING (Refer Appendix-1) 55 69 92 119 152 182 217 266 319 363 406 458 638 726 812 916
SITE CABLE RATING 19.8 24.8 33.1 42.8 54.7 65.5 78.1 95.8 114.8 130.7 146.2 164.9 229.7 261.4 292.3 329.8
CABLE RESIST. IN OHM / km (20˚ C) 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.124 0.099 0.193 0.153 0.124 0.099
CABLE RESISTANCE IN OHM / km 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.250 0.200 0.160 0.130
CABLE INDUCTANCE IN mH / km 0.279 0.266 0.250 0.242 0.244 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.225 0.224 0.226 0.227
CABLE REACTANCE IN OHM / km 0.088 0.084 0.079 0.076 0.077 0.074 0.074 0.073 0.071 0.071 0.071 0.071 0.071 0.071 0.071 0.071
MOTOR MOTOR MOTOR
0.25 0.66 3.94 0.80 0.60 3069 4580 7658 12147 18952 25999 34316 49149 65047 79192 95730 113510 130094 158383 191461 227020
0.37 0.95 5.72 0.80 0.60 2113 3153 5272 8362 13047 17898 23624 33836 44780 54517 65903 78143 89560 109035 131806 156286
0.55 1.32 7.92 0.80 0.60 1527 2278 3809 6042 9427 12933 17069 24448 32356 39392 47619 56463 64712 78784 95238 112926
0.75 1.74 10.43 0.80 0.60 1158 1728 2890 4584 7152 9811 12949 18547 24546 29884 36125 42834 49092 59767 72249 85668
1.10 2.47 14.83 0.80 0.60 815 1216 2033 3224 5031 6901 9109 13046 17266 21020 25410 30130 34532 42041 50821 60260
1.50 3.34 20.03 0.80 0.60 603 900 1505 2387 3725 5110 6744 9660 12784 15564 18815 22309 25569 31129 37630 44619
2.20 4.72 28.30 0.80 0.60 427 637 1066 1690 2637 3618 4775 6839 9051 11020 13321 15795 18103 22039 26642 31590
3.00 6.34 38.06 0.80 0.60 318 474 792 1257 1961 2690 3550 5085 6730 8193 9904 11744 13459 16386 19808 23487
3.70 7.75 46.51 0.80 0.60 260 388 648 1028 1604 2201 2905 4161 5506 6704 8104 9609 11013 13407 16207 19217
4.00 8.18 49.10 0.80 0.60 246 367 614 974 1520 2085 2752 3941 5216 6350 7676 9102 10432 12701 15353 18204
5.50 9.33 55.99 0.80 0.60 216 322 539 854 1333 1828 2413 3456 4574 5569 6732 7983 9149 11138 13465 15965
7.50 14.91 89.43 0.80 0.60 135 202 337 535 834 1145 1511 2164 2864 3486 4215 4997 5727 6973 8429 9995
11.00 21.86 131.17 0.82 0.57 0 137 230 365 569 780 1030 1475 1953 2377 2874 3407 3905 4754 5747 6814
15.00 28.20 169.20 0.82 0.57 0 0 178 283 441 605 799 1144 1514 1843 2228 2641 3027 3686 4455 5283
18.50 34.55 207.28 0.82 0.57 0 0 0 231 360 494 652 934 1236 1504 1818 2156 2471 3009 3637 4312
22.00 41.08 246.50 0.82 0.57 0 0 0 194 303 415 548 785 1039 1265 1529 1813 2078 2530 3058 3626
30.00 55.65 333.89 0.82 0.57 0 0 0 0 223 307 405 580 767 934 1129 1339 1534 1868 2258 2677
37.00 68.63 411.80 0.82 0.57 0 0 0 0 0 0 328 470 622 757 915 1085 1244 1514 1831 2171
45.00 81.30 487.83 0.84 0.54 0 0 0 0 0 0 0 397 525 639 773 916 1050 1278 1545 1832
55.00 95.65 573.87 0.84 0.54 0 0 0 0 0 0 0 337 446 543 657 779 893 1087 1314 1558
75.00 130.43 782.55 0.84 0.54 0 0 0 0 0 0 0 0 0 398 482 571 655 797 963 1142
90.00 156.51 939.06 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 476 545 664 803 952
110.00 191.29 1147.74 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 446 543 657 779
132.00 229.55 1377.29 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 372 453 547 649
150.00 254.49 1526.93 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 408 494 585
160.00 271.45 1628.73 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 463 549
185.00 313.87 1883.22 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 475
200.00 339.32 2035.91 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.10
415V CABLES SELECTION CHART FOR MOTOR FEEDERS IN GROUND
(MOTOR STARTING)

ADCO Doc No. 23-99-67-0601
APPENDIX 7.10
415V CABLE SELECTION CHART (MOTOR STARTING)
(LAID IN GROUND)
MAXIMUM PERMISSIBLE VOLT DROP =20'% AT MOTOR LR.C
COS 0 - 0.215 ASSUMED AS THE STANDARD STARTING P.F. FOR L.V. MOTORS
2
CABLE CSA IN mm 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x150 3x185 2x3x95 2x3x120 2x3x150 2x3x185
STANDARD CABLE RATING (Refer Appendix-1) 55 69 92 119 152 182 217 266 319 363 406 458 638 726 812 916
SITE CABLE RATING 19.8 24.8 33.1 42.8 54.7 65.5 78.1 95.8 114.8 130.7 146.2 164.9 229.7 261.4 292.3 329.8
CABLE RESIST. IN OHM / km (20˚ C) 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.124 0.099 0.193 0.153 0.124 0.099
CABLE RESISTANCE IN OHM / km 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.250 0.200 0.160 0.130
CABLE INDUCTANCE IN mH / km 0.279 0.266 0.250 0.242 0.244 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.225 0.224 0.226 0.227
CABLE REACTANCE IN OHM / km 0.088 0.084 0.079 0.076 0.077 0.074 0.074 0.073 0.071 0.071 0.071 0.071 0.071 0.071 0.071 0.071
MOTOR MOTOR MOTOR
0.25 0.66 3.94 0.20 0.980 9883 14534 23659 36108 53041 69136 85821 111577 135140 152343 168765 183609 270280 304686 337530 367218
0.37 0.95 5.72 0.20 0.980 6803 10006 16287 24858 36515 47595 59081 76813 93034 104877 116182 126401 186067 209754 232364 252802
0.55 1.32 7.92 0.20 0.980 4916 7230 11769 17961 26384 34390 42690 55502 67222 75780 83948 91332 134445 151559 167897 182664
0.75 1.74 10.43 0.20 0.980 3729 5485 8928 13626 20016 26089 32385 42105 50996 57488 63685 69286 101993 114976 127370 138573
1.10 2.47 14.83 0.20 0.980 2623 3858 6280 9584 14079 18351 22780 29617 35871 40438 44797 48737 71742 80875 89593 97473
1.50 3.34 20.03 0.20 0.980 1942 2857 4650 7097 10425 13588 16867 21930 26561 29942 33169 36087 53121 59883 66338 72173
2.20 4.72 28.30 0.20 0.980 1375 2022 3292 5024 7381 9620 11942 15526 18805 21199 23484 25549 37610 42397 46968 51099
3.00 6.34 38.06 0.20 0.980 1022 1504 2448 3736 5488 7153 8879 11544 13981 15761 17460 18996 27963 31523 34921 37992
3.70 7.75 46.51 0.20 0.980 837 1230 2003 3057 4490 5852 7265 9445 11440 12896 14286 15543 22879 25792 28572 31085
4.00 8.18 49.10 0.20 0.980 792 1166 1897 2895 4253 5544 6882 8947 10837 12216 13533 14723 21673 24432 27066 29447
5.50 9.33 55.99 0.20 0.980 695 1022 1664 2539 3730 4862 6035 7847 9504 10714 11869 12912 19008 21427 23737 25825
7.50 14.91 89.43 0.20 0.980 435 640 1042 1590 2335 3044 3778 4912 5950 6707 7430 8083 11899 13414 14860 16167
11.00 21.86 131.17 0.20 0.980 0 436 710 1084 1592 2075 2576 3349 4057 4573 5066 5511 8113 9146 10132 11023
15.00 28.20 169.20 0.20 0.980 0 0 551 840 1234 1609 1997 2596 3145 3545 3927 4273 6290 7090 7854 8545
18.50 34.55 207.28 0.20 0.980 0 0 0 686 1008 1313 1630 2119 2567 2894 3206 3488 5134 5788 6412 6975
22.00 41.08 246.50 0.20 0.980 0 0 0 577 847 1104 1371 1782 2159 2433 2696 2933 4317 4867 5392 5866
30.00 55.65 333.89 0.20 0.980 0 0 0 0 625 815 1012 1316 1594 1797 1990 2165 3187 3593 3980 4330
37.00 68.63 411.80 0.20 0.980 0 0 0 0 0 0 821 1067 1292 1457 1614 1756 2584 2913 3227 3511
45.00 81.30 487.83 0.20 0.980 0 0 0 0 0 0 0 901 1091 1230 1362 1482 2182 2459 2724 2964
55.00 95.65 573.87 0.20 0.980 0 0 0 0 0 0 0 766 927 1045 1158 1260 1854 2090 2316 2520
75.00 130.43 782.55 0.20 0.980 0 0 0 0 0 0 0 0 0 767 849 924 1360 1533 1698 1848
90.00 156.51 939.06 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 770 1133 1278 1415 1540
110.00 191.29 1147.74 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 0 927 1045 1158 1260
132.00 229.55 1377.29 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 0 773 871 965 1050
150.00 254.49 1526.93 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 0 0 786 870 947
160.00 271.45 1628.73 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 0 0 0 816 888
185.00 313.87 1883.22 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 768
200.00 339.32 2035.91 0.20 0.980 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.11
240V CABLES SELECTION CHART FOR POWER FEEDERS IN GROUND

ADCO Doc No. 23-99-67-0601
APPENDIX 7.11
(LAID IN GROUND)
2
CABLE CSA IN mm 3x2.5 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x150 3x185 3x240
42 55 69 92 119 152 182 217 266 319 363 406 458 529
Appendix-1)
SITE CABLE RATING 15.1 19.8 24.8 33.1 42.8 54.7 65.5 78.1 95.8 114.8 130.7 146.2 164.9 190.4
CABLE RESIST. IN OHM / km (20˚ C) 7.410 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.124 0.099 0.075
CABLE RESISTANCE IN OHM / km 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.100
CABLE INDUCTANCE IN mH / km 0.297 0.279 0.266 0.250 0.242 0.244 0.237 0.235 0.231 0.225 0.224 0.226 0.227 0.224
CABLE REACTANCE IN OHM / km 0.093 0.088 0.084 0.079 0.076 0.077 0.074 0.074 0.073 0.071 0.071 0.071 0.071 0.070
FEEDER FEEDER
kW AMPS PHI PHI
0.25 1.97 0.80 0.60 159 255 379 632 997 1542 2098 2742 3861 5024 6022 7144 8303 9971
0.37 2.83 0.80 0.60 111 177 264 440 694 1073 1461 1909 2687 3497 4192 4973 5780 6941
0.55 3.92 0.80 0.60 80 128 191 318 501 775 1055 1378 1940 2525 3026 3590 4173 5011
0.75 5.21 0.80 0.60 60 96 143 239 377 583 793 1037 1460 1900 2277 2701 3140 3770
1.10 7.44 0.80 0.60 42 67 100 167 264 408 556 726 1022 1330 1595 1892 2199 2640
1.50 10.02 0.80 0.60 31 50 75 124 196 303 413 539 759 988 1184 1404 1633 1960
2.20 14.15 0.80 0.60 22 35 53 88 139 215 292 382 537 699 838 995 1156 1388
3.00 19.05 0.80 0.60 0 26 39 65 103 159 217 284 399 520 623 739 859 1031
3.70 23.22 0.80 0.60 0 0 32 54 85 131 178 233 328 426 511 606 704 846
4.00 24.51 0.80 0.60 0 0 31 51 80 124 169 220 310 404 484 574 667 801
5.50 32.93 0.80 0.60 0 0 0 38 60 92 126 164 231 301 360 427 497 597
7.50 44.39 0.80 0.60 0 0 0 0 0 68 93 122 171 223 267 317 368 443
11.00 62.80 0.82 0.57 0 0 0 0 0 0 65 85 119 156 187 223 260 313
15.00 84.69 0.82 0.57 0 0 0 0 0 0 0 0 89 116 139 165 193 232
18.50 103.30 0.82 0.57 0 0 0 0 0 0 0 0 0 95 114 135 158 190
22.00 122.84 0.82 0.57 0 0 0 0 0 0 0 0 0 0 96 114 133 160
30.00 165.69 0.82 0.57 0 0 0 0 0 0 0 0 0 0 0 0 98 119
37.00 202.16 0.82 0.57 0 0 0 0 0 0 0 0 0 0 0 0 0 0
45.00 244.55 0.82 0.57 0 0 0 0 0 0 0 0 0 0 0 0 0 0
55.00 290.23 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
75.00 394.51 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
90.00 471.41 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
110.00 574.35 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
132.00 685.61 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
150.00 769.14 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
160.00 819.55 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
185.00 946.62 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
200.00 1023.37 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
250.00 1279.22 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.12
240V CABLES SELECTION CHART FOR POWER FEEDERS IN AIR

ADCO Doc No. 23-99-67-0601
APPENDIX 7.12
(LAID IN AIR)
2
35 47 59 82 107 140 172 209 263 324 376 430 495 584
Appendix-1)
FEEDER FEEDER
kW AMPS PHI PHI
0.25 1.97 0.80 0.60 159 255 379 632 997 1542 2098 2742 3861 5024 6022 7144 8303 9971
0.37 2.83 0.80 0.60 111 177 264 440 694 1073 1461 1909 2687 3497 4192 4973 5780 6941
0.55 3.92 0.80 0.60 80 128 191 318 501 775 1055 1378 1940 2525 3026 3590 4173 5011
0.75 5.21 0.80 0.60 60 96 143 239 377 583 793 1037 1460 1900 2277 2701 3140 3770
1.10 7.44 0.80 0.60 42 67 100 167 264 408 556 726 1022 1330 1595 1892 2199 2640
1.50 10.02 0.80 0.60 31 50 75 124 196 303 413 539 759 988 1184 1404 1633 1960
2.20 14.15 0.80 0.60 22 35 53 88 139 215 292 382 537 699 838 995 1156 1388
3.00 19.05 0.80 0.60 16 26 39 65 103 159 217 284 399 520 623 739 859 1031
3.70 23.22 0.80 0.60 0 22 32 54 85 131 178 233 328 426 511 606 704 846
4.00 24.51 0.80 0.60 0 20 31 51 80 124 169 220 310 404 484 574 667 801
5.50 32.93 0.80 0.60 0 0 23 38 60 92 126 164 231 301 360 427 497 597
7.50 44.39 0.80 0.60 0 0 0 28 44 68 93 122 171 223 267 317 368 443
11.00 62.80 0.82 0.57 0 0 0 0 31 47 65 85 119 156 187 223 260 313
15.00 84.69 0.82 0.57 0 0 0 0 0 0 48 63 89 116 139 165 193 232
18.50 103.30 0.82 0.57 0 0 0 0 0 0 39 51 73 95 114 135 158 190
22.00 122.84 0.82 0.57 0 0 0 0 0 0 0 43 61 80 96 114 133 160
30.00 165.69 0.82 0.57 0 0 0 0 0 0 0 0 0 59 71 84 98 119
37.00 202.16 0.82 0.57 0 0 0 0 0 0 0 0 0 0 58 69 81 97
45.00 244.55 0.82 0.57 0 0 0 0 0 0 0 0 0 0 0 57 67 80
55.00 290.23 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 56 68
75.00 394.51 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
90.00 471.41 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
110.00 574.35 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
132.00 685.61 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
150.00 769.14 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
160.00 819.55 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
185.00 947.61 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
200.00 1024.44 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
250.00 1280.55 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.12A
110V AC CABLES SELECTION CHART FOR POWER FEEDERS IN AIR

ADCO Doc No. 23-99-67-0601
ADCO Doc No. 23-99-67-0601
APPENDIX 7.12-A
110V AC CABLE SELECTION CHART (POWER FEEDER)
(LAID IN AIR)
2
35 47 59 82 107 140 172 209 263 324 376 430 495 584
Appendix-1)
FEEDER FEEDER
kW AMPS PHI PHI
0.25 1.97 0.80 0.60 159 255 379 632 997 1542 2098 2742 3861 5024 6022 7144 8303 9971
0.37 2.83 0.80 0.60 111 177 264 440 694 1073 1461 1909 2687 3497 4192 4973 5780 6941
0.55 3.92 0.80 0.60 80 128 191 318 501 775 1055 1378 1940 2525 3026 3590 4173 5011
0.75 5.21 0.80 0.60 60 96 143 239 377 583 793 1037 1460 1900 2277 2701 3140 3770
1.10 7.44 0.80 0.60 42 67 100 167 264 408 556 726 1022 1330 1595 1892 2199 2640
1.50 10.02 0.80 0.60 31 50 75 124 196 303 413 539 759 988 1184 1404 1633 1960
2.20 14.15 0.80 0.60 22 35 53 88 139 215 292 382 537 699 838 995 1156 1388
3.00 19.05 0.80 0.60 16 26 39 65 103 159 217 284 399 520 623 739 859 1031
3.70 23.22 0.80 0.60 0 22 32 54 85 131 178 233 328 426 511 606 704 846
4.00 24.51 0.80 0.60 0 20 31 51 80 124 169 220 310 404 484 574 667 801
5.50 32.93 0.80 0.60 0 0 23 38 60 92 126 164 231 301 360 427 497 597
7.50 44.39 0.80 0.60 0 0 0 28 44 68 93 122 171 223 267 317 368 443
11.00 62.80 0.82 0.57 0 0 0 0 31 47 65 85 119 156 187 223 260 313
15.00 84.69 0.82 0.57 0 0 0 0 0 0 48 63 89 116 139 165 193 232
18.50 103.30 0.82 0.57 0 0 0 0 0 0 39 51 73 95 114 135 158 190
22.00 122.84 0.82 0.57 0 0 0 0 0 0 0 43 61 80 96 114 133 160
30.00 165.69 0.82 0.57 0 0 0 0 0 0 0 0 0 59 71 84 98 119
37.00 202.16 0.82 0.57 0 0 0 0 0 0 0 0 0 0 58 69 81 97
45.00 244.55 0.82 0.57 0 0 0 0 0 0 0 0 0 0 0 57 67 80
55.00 290.23 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 56 68
75.00 394.51 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
90.00 471.41 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
110.00 574.35 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
132.00 685.61 0.84 0.54 0 0 0 0 0 0 0 0 0 0 0 0 0 0
150.00 769.14 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
160.00 819.55 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
185.00 947.61 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
200.00 1024.44 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0
250.00 1280.55 0.85 0.53 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.13
110V DC CABLES SELECTION CHART FOR POWER FEEDERS IN GROUND

ADCO Doc No. 23-99-67-0601
APPENDIX 7.13
110V DC CABLE SELECTION CHART (POWER FEEDER)
(LAID IN GROUND)
2
CABLE CSA IN mm 3x2.5 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x150 3x185 2x3x120 2x3x185
STANDARD CABLE RATING
42 55 69 92 119 152 182 217 266 319 363 406 458 1089 1374
(Refer Appendix-1)
SITE CABLE RATING 14.9 19.5 24.5 32.7 42.2 54.0 64.6 77.0 94.4 113.2 128.9 144.1 162.6 386.6 487.8
CABLE RESIST. IN OHM / km
(20˚ C) 7.410 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.124 0.099 0.153 0.099
CABLE RESIST. IN OHM / km 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.200 0.130
FEEDER FEEDER
RATING F.L.C. MAXIMUM PERMISSIBLE ROUTE LENGTH IN METER
kW AMPS
0.25 2.27 51 82 123 206 329 520 722 968 1424 1936 2420 3025 3723 7260 11169
0.37 3.36 34 55 83 139 222 352 488 654 962 1308 1635 2044 2516 4905 7547
0.55 5.00 23 37 56 94 150 237 328 440 647 880 1100 1375 1692 3300 5077
0.75 6.82 17 27 41 69 110 173 241 323 475 645 807 1008 1241 2420 3723
1.10 10.00 12 19 28 47 75 118 164 220 324 440 550 688 846 1650 2538
1.50 13.64 8 14 20 34 55 87 120 161 237 323 403 504 621 1210 1862
2.20 20.00 0 9 14 23 37 59 82 110 162 220 275 344 423 825 1269
3.00 27.27 0 0 0 17 27 43 60 81 119 161 202 252 310 605 931
3.70 33.64 0 0 0 14 22 35 49 65 96 131 164 204 252 491 755
4.00 36.36 0 0 0 0 21 33 45 61 89 121 151 189 233 454 698
5.50 50.00 0 0 0 0 0 24 33 44 65 88 110 138 169 330 508
7.50 68.18 0 0 0 0 0 0 0 32 47 65 81 101 124 242 372
11.00 100.00 0 0 0 0 0 0 0 0 0 44 55 69 85 165 254
15.00 136.36 0 0 0 0 0 0 0 0 0 0 0 50 62 121 186
18.50 168.18 0 0 0 0 0 0 0 0 0 0 0 0 50 98 151
22.00 200.00 0 0 0 0 0 0 0 0 0 0 0 0 0 83 127
30.00 272.73 0 0 0 0 0 0 0 0 0 0 0 0 0 0 93

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.14
110V DC CABLES SELECTION CHART FOR POWER FEEDERS IN AIR

ADCO Doc No. 23-99-67-0601
APPENDIX 7.14
(LAID IN AIR)
2
CABLE CSA IN mm 3x2.5 3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70 3x95 3x120 3x185
35 47 59 82 107 140 172 209 263 324 376 495
Appendix-1)
SITE CABLE RATING 22.8 30.6 38.4 53.3 69.6 91.0 111.8 135.9 171.0 210.6 244.4 321.8
CABLE RESIST. IN OHM / km (20˚ C) 7.410 4.610 3.080 1.830 1.150 0.727 0.524 0.387 0.268 0.193 0.153 0.099
CABLE RESISTANCE IN OHM / km 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.130
FEEDER FEEDER
kW AMPS PHI PHI
0.25 2.27 51 82 123 206 329 520 722 968 1424 1936 2420 3723
0.37 3.36 34 55 83 139 222 352 488 654 962 1308 1635 2516
0.55 5.00 23 37 56 94 150 237 328 440 647 880 1100 1692
0.75 6.82 17 27 41 69 110 173 241 323 475 645 807 1241
1.10 10.00 12 19 28 47 75 118 164 220 324 440 550 846
1.50 13.64 8 14 20 34 55 87 120 161 237 323 403 621
2.20 20.00 6 9 14 23 37 59 82 110 162 220 275 423
3.00 27.27 0 7 10 17 27 43 60 81 119 161 202 310
3.70 33.64 0 0 8 14 22 35 49 65 96 131 164 252
4.00 36.36 0 0 0 13 21 33 45 61 89 121 151 233
5.50 50.00 0 0 0 0 15 24 33 44 65 88 110 169
7.50 68.18 0 0 0 0 0 17 24 32 47 65 81 124
11.00 100.00 0 0 0 0 0 0 16 22 32 44 55 85
15.00 136.36 0 0 0 0 0 0 0 0 24 32 40 62
18.50 168.18 0 0 0 0 0 0 0 0 0 26 33 50
22.00 200.00 0 0 0 0 0 0 0 0 0 0 28 42
30.00 272.73 0 0 0 0 0 0 0 0 0 0 0 31

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.15

ADCO Doc No. 23-99-67-0601
APPENDIX 7.15
(LAID IN GROUND)
2
42 55 69 92 119 152 182 217 266 319 363 406 458 1089 1374
(Refer Appendix-1)
CABLE RESISTANCE IN OHM 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.200 0.130
FEEDER FEEDER
kW AMPS
0.25 5.21 5 8 12 20 31 50 69 92 136 184 230 288 354 691 1063
0.37 7.71 3 5 8 13 21 33 46 62 92 125 156 195 240 467 719
0.55 11.46 0 0 5 9 14 23 31 42 62 84 105 131 161 314 483
0.75 15.63 0 0 0 7 10 17 23 31 45 61 77 96 118 230 354
1.10 22.92 0 0 0 0 0 11 16 21 31 42 52 65 81 157 242
1.50 31.25 0 0 0 0 0 0 11 15 23 31 38 48 59 115 177
2.20 45.83 0 0 0 0 0 0 0 0 15 21 26 33 40 79 121
3.00 62.50 0 0 0 0 0 0 0 0 0 0 19 24 30 58 89
3.70 77.08 0 0 0 0 0 0 0 0 0 0 0 0 24 47 72
4.00 83.33 0 0 0 0 0 0 0 0 0 0 0 0 22 43 66
5.50 114.58 0 0 0 0 0 0 0 0 0 0 0 0 0 31 48
7.50 156.25 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35
11.00 229.17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 24

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.16

ADCO Doc No. 23-99-67-0601
APPENDIX 7.16
(LAID IN AIR)
2
Appendix-1) 35 47 59 82 107 140 172 209 263 324 376 495
FEEDER FEEDER
kW AMPS PHI PHI
0.25 5.21 5 8 12 20 31 50 69 92 136 184 230 354
0.37 7.71 3 5 8 13 21 33 46 62 92 125 156 240
0.55 11.46 0 4 5 9 14 23 31 42 62 84 105 161
0.75 15.63 0 0 4 7 10 17 23 31 45 61 77 118
1.10 22.92 0 0 0 4 7 11 16 21 31 42 52 81
1.50 31.25 0 0 0 0 5 8 11 15 23 31 38 59
2.20 45.83 0 0 0 0 0 0 8 10 15 21 26 40
3.00 62.50 0 0 0 0 0 0 0 8 11 15 19 30
3.70 77.08 0 0 0 0 0 0 0 0 9 12 16 24
4.00 83.33 0 0 0 0 0 0 0 0 0 12 14 22
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.17

ADCO Doc No. 23-99-67-0601
APPENDIX 7.17
(LAID IN GROUND)
2
42 55 69 92 119 152 182 217 266 319 363 406 458 1089 1374
(Refer Appendix-1)
CABLE RESISTANCE IN OHM 9.500 5.910 3.950 2.350 1.470 0.930 0.670 0.500 0.340 0.250 0.200 0.160 0.130 0.200 0.130
FEEDER FEEDER
kW AMPS
0.25 10.42 2 4 6 10 16 25 34 46 68 92 115 144 177 346 532
0.37 15.42 2 3 4 7 11 17 23 31 46 62 78 97 120 234 359
0.55 22.92 0 0 3 4 7 11 16 21 31 42 52 65 81 157 242
0.75 31.25 0 0 0 3 5 8 11 15 23 31 38 48 59 115 177
1.10 45.83 0 0 0 0 0 6 8 10 15 21 26 33 40 79 121
1.50 62.50 0 0 0 0 0 0 6 8 11 15 19 24 30 58 89
2.20 91.67 0 0 0 0 0 0 0 0 8 10 13 16 20 39 60
3.00 125.00 0 0 0 0 0 0 0 0 0 0 10 12 15 29 44
3.70 154.17 0 0 0 0 0 0 0 0 0 0 0 0 12 23 36
4.00 166.67 0 0 0 0 0 0 0 0 0 0 0 0 11 22 33
5.50 229.17 0 0 0 0 0 0 0 0 0 0 0 0 0 16 24
7.50 312.50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18
11.00 458.33 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12

ADCO Doc No. 23-99-67-0601
APPENDIX – 7.18

ADCO Doc No. 23-99-67-0601
APPENDIX 7.18
(LAID IN AIR)
2
Appendix-1) 35 47 59 82 107 140 172 209 263 324 376 495
FEEDER FEEDER
kW AMPS PHI PHI
0.25 10.42 2 4 6 10 16 25 34 46 68 92 115 177
0.37 15.42 2 3 4 7 11 17 23 31 46 62 78 120
0.55 22.92 0 2 3 4 7 11 16 21 31 42 52 81
0.75 31.25 0 0 2 3 5 8 11 15 23 31 38 59
1.10 45.83 0 0 0 2 4 6 8 10 15 21 26 40
1.50 62.50 0 0 0 0 3 4 6 8 11 15 19 30
2.20 91.67 0 0 0 0 0 0 4 5 8 10 13 20
3.00 125.00 0 0 0 0 0 0 0 4 6 8 10 15
3.70 154.17 0 0 0 0 0 0 0 0 5 6 8 12
4.00 166.67 0 0 0 0 0 0 0 0 0 6 7 11
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0

ADCO Doc No. 23-99-67-0601

P-23001 - 23.99.67.0601 - Rev.B - MV-LV Cable Sizing Calculations Report

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FEED SERVICES FOR

MENDER PHASE-I PROJECT

MV/LV CABLE SIZING

ADCO Document No. 23-99-67-0601

B 16/01/2014 AA MB KM ISSUED FOR EPC TENDER

ORIGINATOR: ADCO TC-ENG

ADCO Doc. No. 23-99-67-0601 PROJ. No. P-23001 Page 1 of 100

FORM 30.99.11.001 A0593301 \9787N\9787N07\0006\0006R0.DOC \LN\...

2. PURPOSE OF THIS DOCUMENT...............................................................................4

3.1 CODES AND STANDARDS.............................................................................5

3.2 APPLICABLE DOCUMENTS...........................................................................5

3.3 SHELL STANDARDS.......................................................................................5

3.4 INTERNATIONAL STANDARDS......................................................................6

4.3 ORDER OF PRECEDENCE.............................................................................8

5.1 ENVIRONMENT CONDITIONS.......................................................................9

5.2 DESIGN TEMPERATURES...........................................................................10

5.3 VOLTAGE LEVELS, FREQUENCY AND NEUTRAL SYSTEM.....................11

7.1 MAXIMUM ADMISSIBLE CONDUCTOR TEMPERATURE...........................13

7.2 CORRECTION FACTORS.............................................................................14

7.3 VOLTAGE DROP CALCULATION.................................................................17

7.4 SHORT CIRCUIT CALCULATION.................................................................18

8. CABLE SIZE SELECTION.........................................................................................20

8.2 LOW VOLTAGE CABLES..............................................................................21

8.3 CABLE SELECTION CHART.........................................................................22

Document Title: Project No.: P-23001

APPENDIX – 1.1 ADMISSIBLE CURRENT CARRYING AMPACITIES OF LV CABLES

APPENDIX – 1.2 ADMISSIBLE CURRENT CARRYING AMPACITIES OF MV CABLES

APPENDIX – 2 CORRECTION FACTORS FOR MV CABLES............................................28

APPENDIX – 3 CORRECTION FACTORS FOR LV CABLES..............................................38

APPENDIX – 4 RESISTANCE AND REACTANCE OF CABLES..........................................43

APPENDIX – 5 TABLE OF SHORT CIRCUIT RATINGS OF CABLES.................................46

APPENDIX – 6 SAMPLE OF MANUAL CALCULATIONS (MV INCOMER CABLES)...........48

SAMPLE OF MANUAL CALCULATIONS..............................................................................49

APPENDIX – 7 CABLE CALCULATION / SELECTION CHART...........................................62

Document Title: Project No.: P-23001

1.2 PURPOSE OF THIS DOCUMENT

Document Title: Project No.: P-23001

2.1 CODES AND STANDARDS

 ADCO Engineering Standards

 Shell Design and Engineering Practices (DEP)

 International Electrotechnical Commission Recommendations (IEC)

 Institute of Electrical and Electronics Engineers (IEEE)

2.2 APPLICABLE DOCUMENTS

Projects Documents Document Title

2.3 SHELL STANDARDS

DEP 33.64.10.10-Gen Electrical Engineering Design, Feb.2011

Document Title: Project No.: P-23001

Document Title: Project No.: P-23001

COMPANY : Abu Dhabi Company for Onshore Oil

CONSULTANT : ADCO Technical Center - Engineering

EPC Contractor : A duly approved entity or company engaged by

PROJECT : FEED for Mender Phase-I

SERVICES : All services to be performed or provided by

VENDOR / SUPPLIER : The person, firm, company or Corporation to

Shall The word “shall” is understood to be mandatory

Should The word “should” is understood to be strongly

Document Title: Project No.: P-23001

3.3 ORDER OF PRECEDENCE

The order of precedence of various documents shall be as follows: