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ECP 11-0209 Interlocks Test Form: 1 General Data

This document is a test form for checking interlocking circuits at a substation. It contains sections to check both mechanical and electrical interlocks. The mechanical interlock section involves checking keys, locks, and their functions for various equipment like circuit breakers, isolators, and earth switches according to the interlocking circuit diagram. The electrical interlock section involves checking auxiliary switch chains and electrical bolts to ensure only one operation state is possible at a time and that opening any contact prevents operation. Signatures are also recorded upon completion of the tests.

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Himdad Tahir
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364 views3 pages

ECP 11-0209 Interlocks Test Form: 1 General Data

This document is a test form for checking interlocking circuits at a substation. It contains sections to check both mechanical and electrical interlocks. The mechanical interlock section involves checking keys, locks, and their functions for various equipment like circuit breakers, isolators, and earth switches according to the interlocking circuit diagram. The electrical interlock section involves checking auxiliary switch chains and electrical bolts to ensure only one operation state is possible at a time and that opening any contact prevents operation. Signatures are also recorded upon completion of the tests.

Uploaded by

Himdad Tahir
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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ECP 11-0209

Version 2.0

ECP 11-0209 Interlocks Test Form


Substation
Substation Number
Circuit

General Data

Interlocking circuit diagram number

Mechanical Interlocks

2.1

Circuit Breakers

Check keys and locks with interlocking schematic


Keys trapped in intermediate position and only released in fully open
or fully closed position as appropriate to the particular interlock

2.2

Isolators

Isolator number
Check keys and locks and their function with interlocking circuit
diagram
Keys trapped in intermediate position and only released in the fully
open or fully closed position as appropriate to the particular interlock
Subject to the energising of the magnetic bolt, bolt release requires
the application of all keys

2.3

Earth Switches

Check keys and locks and their function with interlocking circuit
diagram
Keys released only in the fully open or fully closed position
Removal of any key prevents operation

2.4

Key Exchange Boxes

Check keys and locks and their function with interlocking circuit
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ECP 11-0209
ECP 11-0209 Interlocks Test Form
diagram

2.5

Maintenance Earthing Devices

Check keys and locks and their function with interlocking circuit
diagram
All keys required for operation

2.6

Excess Keys

Confirm that not more than the correct number of keys are available

Electrical Interlocks

3.1

Local Auxiliary Switch Chains

Check to circuit diagram number ................................................


Each alternative chain of auxiliary switches when closed permits
operation, and opening of any one contact prevents operation

3.2

Auxiliary Switch Chains for Parallel Operation

Check with interlocking circuit diagram


Each alternative chain of auxiliary switches when closed permits
operation, and any one contact open prevents operation

3.3

Electrical Bolts Operational Tests

Check operation of all bolts at standing battery volts

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Version 2.0

ECP 11-0209
ECP 11-0209 Interlocks Test Form

Comments/Other Tests

Signature Record

Version 2.0

Contractors Engineer (if applicable)


Contractor
Name

Signature

Date

Signature

Date

UK Power Networks Engineer


Name

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