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LUL - S1939

High Voltage A.C. Indoor Switchboards up to 36kV

active, Most Current
Organization: LUL
Publication Date: 1 May 2021
Status: active
Page Count: 35
scope:

This standard applies to LU and all LU suppliers and to new 36, 24 and 12 kV rated, 50 Hz, three phase indoor switchboards, and extensions of existing equipment, associated equipment and documentation, to be installed on the LU power system.

Purpose

This standard states the technical requirements for the design, manufacture and testing of 36, 24 and 12 kV rated, 50 Hz, indoor switchboards, associated equipment and documentation for use on the London Underground (LU) Power network to provide power for electric traction, signalling, station and depot services, Docklands Light Railway and other authorised users.

The switchboards are used to provide routine switching of the distribution systems, interruption of load and fault current and the isolation and earthing of individual circuits, transformers and busbars within an operational environment as described in S1916 'Physical and Electrical Environment of The System'.

Document History

S1939
May 1, 2021
High Voltage A.C. Indoor Switchboards up to 36kV
This standard applies to LU and all LU suppliers and to new 36, 24 and 12 kV rated, 50 Hz, three phase indoor switchboards, and extensions of existing equipment, associated equipment and...
October 1, 2020
High Voltage A.C. Indoor Switchboards up to 36kV
This standard applies to LU and all LU suppliers and to new 36, 24 and 12 kV rated, 50 Hz, three phase indoor switchboards, and extensions of existing equipment, associated equipment and...
August 1, 2013
High Voltage A.C. Indoor Switchboards up to 36kV 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...
August 1, 2013
High Voltage A.C. Indoor Switchboards up to 36kV 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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