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LUL - S1942

22 kV/433 V and 11 kV/433 V Three Phase Auxiliary Transformers

active, Most Current
Organization: LUL
Publication Date: 1 July 2022
Status: active
Page Count: 27
scope:

This standard applies to LU and LU Suppliers for new 22kV/433V and 11kV/433V, 50 Hz, three phase auxiliary transformers, associated equipment and documentation, to be installed on LU Power Network. The equipment shall provide protection against electric shock in accordance with BS EN 61140.

Purpose

This standard states the technical requirements for the design, manufacture and testing of 22kV/433V and 11kV/433V, 50 Hz, 3 phase auxiliary transformers, associated equipment and documentation for use on the London Underground (LU) Power Network to provide power for signalling, substation, station and depot services, and other authorised uses.

The transformers are used, typically, to provide supplies to signalling equipment, substation, station and depot services including drive systems for pumps, lifts and ventilation plant.

Document History

S1942
July 1, 2022
22 kV/433 V and 11 kV/433 V Three Phase Auxiliary Transformers
This standard applies to LU and LU Suppliers for new 22kV/433V and 11kV/433V, 50 Hz, three phase auxiliary transformers, associated equipment and documentation, to be installed on LU Power Network....
May 1, 2022
22 kV/433 V and 11 kV/433 V Three Phase Auxiliary Transformers
This standard applies to LU and LU Suppliers for new 22kV/433V and 11kV/433V, 50 Hz, three phase auxiliary transformers, associated equipment and documentation, to be installed on LU Power Network....
August 1, 2013
22 kV/433 V and 11 kV/433 V Three Phase Auxiliary Transformers for Use on The System
This Standard applies to equipment and systems on the LU power system. Purpose The purpose of this LU Standard is to apply technical requirements for equipment and systems on the LU power system...

References

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