Electric Utility Application and Reference Guide
Electric Utility Application and Reference Guide
Electric Utility Application and Reference Guide
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Power Generation
Lightning
B1642Q Downconductor
Ground Plate
Copper-
Bonded Steel
Conductor
Inspection
Rebar Clamp Well
Ground Enhancement
Material (GEM)
Copper-bonded
Ground Rods
CADWELD
Structure Connections
Ground Grid
(Equipotential Bonding)
CADWELD Connections
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Substation Earthing/Grounding and Lightning Protection
Crushed Rock
Soil
Prefabricated
Wire Mesh
Copper-bonded
Rods Copper-bonded
Steel Conductor
TAC
XBQ
GT
Surge Protection
Ground Enhancement
Material (GEM)
CADWELD Connections
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Substation Earthing/Grounding and Lightning Protection
VB VS
Connection to
Ground Grid
Fence Post
Clamp CADWELD
FC078 Structure Connections
Ground Bars
ce
Fen EHV / HV
Transmission Line VS
ERITECH SYSTEM 3000
Cable
Trench
Transformer
18
(450 mm)
Crushed
Rock
ock
edR
Crush
Substation
B162 2Q
Ground Plate
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Power Transmission and Distribution
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Power Transmission and Distribution
Distribution Transmission
Pole Tower
Transformer Tank
Clamp TGC 20 Transformer Tank
Clamp CC207
Copper-bonded
Steel Conductor
Copper-bonded
Copper-bonded Ground Rods
Steel Conductor
Utility Pole Ground Plate Utility Pole Bottom Plate Ground Enhancement
EGP100HL Material (GEM)
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Accessories for Electrical Utility Applications
Along with our main systems and components for
Copper-bonded Steel Conductor
the utility industry, ERICO offers a wide range of
accessories to assist in grounding, bonding and
lightning protection needs. Part No. mm Description
CBSC8 8 Std packaging 100m
CADWELD
Copper-clad Steel Conductors
Complete range of CADWELD applications
for permanent connections from wire to rod,
or wire to wire, etc. For complete range and Cross-
details please refer to the CADWELD Electrical Section PVC Insulated
Connections catalog. Part No. area Type
30CCS16 16 mm2 30CCSIN15
30CCS25 25 mm 2
30CCSIN25
30CCS35 35 mm 2
30CCS35
CADWELD ONE SHOT
30CCS50 50 mm 2
HDC58* 5/8
8 solid - Utility Grounding Bars
1/0 stranded
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Accessories for Electrical Utility Applications
Rebar Clamps
Conductor
Part No. Conductor Range (Metric) Rebar Size (imperial) Rebar Size (Metric)
Range (AWG)
EK16 8 solid - 2/0 stranded 10 - 70 mm2 #3 - #6 8 - 18 mm
EK17 8 solid - 4/0 stranded 10 - 100 mm 2
#6 - #11 18 - 36 mm
EK Series RC Series RC70 8 solid - 2/0 stranded 10 - 70 mm2 #3 - #6 8 - 18 mm
RC100 8 solid - 4/0 stranded 10 - 100 mm 2
#6 - #11 18 - 36 mm
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Design Assistance
ERICO provides a high level of application engineering and ERICO offers a set of drawings of details using
design assistance to the users of its products. A dedicated our products that can be used in the customers
team within ERICO engineering can solve grounding construction documentation. Software is available
application problems. This team carries out modeling of a for public use that will assist with the selection
lightning protection system using modern software tools of CADWELD connections and the design of
that use complex algorithms to model lightning strikes in a grounding systems using GEM.
more accurate way than traditional methods.
Earth/Ground Test
Equipment
To complete the range of grounding
products, ERICO offers modern ground
testing equipment that is suitable for
performing soil resistivity measurements,
step-and-touch voltage measurements,
ground resistance measurements and
stakeless clamp-on ground testing. Earth/Ground Testers
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Applicable Standards for Design of Earthing/Grounding Systems
USA, Australia, Asia The EN62305-3 Standard regarding lightning protection
The IEEE earthing/grounding and lightning protection of buildings gives directions about earthing/grounding of
standards in the U.S. are used quite commonly around lightning protection systems, as well as some simple rules
the world, especially in Asia and Australia. regarding step-and-touch potentials, which have to be
used with care when applied to power utility installations.
The IEEE 80 Standard for Safety in AC Substation
Grounding is the most common document used to assist The BSEN50164-2:2002, Requirements for Conductors
with the design of a system. Many countries have guides and Earth Electrodes, is a standard used as a reference
written either by power utilities, industry associations for testing of ground rods.
or standards to complement IEEE standards. The IEEE
China
80 Standard requires connections that are used in
DLT621-Grounding for AC electrical installation is an
substations to pass all the tests stipulated in IEEE 837 as
application guide for grounding in power utilities. It
veried by independent reports.
references IEEE80.
CADWELD welded connections have been shown
The GB50057-2010:Code for the protection of structures
to pass all of the tests sequences in IEEE 837 in
from lightning is a recently issued compulsory Chinese
comprehensive tests carried out by independent test labs.
National standard, which includes commercial industry
In the same set of experiments, it was demonstrated
structures, petrochemical, commercial, railway stations,
that mechanical connectors that are sometimes used in
etc. The new code allows the use of the copper-bonded
substation applications do not pass the tests outlined
conductor for grounding and lightning protection
in Standard IEEE 837.
conductor. The CADWELD connection is also allowed as a
Other standards that are relevant to grounding and connection method for buried conductors in the grounding
lightning protection include the IEEE 81- IEEE Guide for system.
Measuring Earth Resistivity, Ground Impedance and Earth
Surface Potentials of a Ground System and IEEE Std 998
Guide for Direct Lightning Strike Shielding of Substations.
Europe
Most major power utilities in Europe have their own
internal standards and regulations for the grounding of
substations and the designer should refer to them for
guidance. Additionally, the IEEE 80 Standard (as well as
the standards related to it) is also widely used since it
provides a fully integrated approach to the design of an
efcient earthing system. The IEC 60479-1 Standard
contains formula for the calculation of step-and-touch
potentials but does not cover all the resistivity and system
resistance aspects or fault current-related calculations
covered in IEEE 80.
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representative. Improper installation, misuse, misapplication or other failure to completely follow ERICOs instructions and warnings may cause product malfunction, property damage, serious bodily injury and death.
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