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NR BR 929

SPECIFICATION FOR 110/24 VOLT TRANSFORMER-RECTIFIER UNITS WITH SMOOTHED OUTPUT FOR TRACK CIRCUIT EQUIPMENT

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Organization: NR
Publication Date: 1 January 1988
Status: active
Page Count: 13
scope:

GENERAL

This Specification applied to transformer-rectifier sets with smoothed outputs. They are used to supply track circuit equipment with a nominal voltage of 24 V dc derived from a reliable 110 V ac line side power supply.

 

Document History

NR BR 929
January 1, 1988
SPECIFICATION FOR 110/24 VOLT TRANSFORMER-RECTIFIER UNITS WITH SMOOTHED OUTPUT FOR TRACK CIRCUIT EQUIPMENT
GENERAL This Specification applied to transformer-rectifier sets with smoothed outputs. They are used to supply track circuit equipment with a nominal voltage of 24 V dc derived from a reliable 110...

References

This document references:
BS 714 - Specification for Cartridge Fuse-Links for Use in Railway-Signalling Circuits
Published by BSI on November 30, 1950
Up to 250 V. Ratings, dimensions, end-caps, materials, marking, tests.
This document references:
NR BRS-SM 295 - Overall Dimensions & Fixing CRS for Rack Mounted Equipment
Published by NR on March 1, 1988
A description is not available for this item.
This document references:
BS 6004 - Electric cables - PVC insulated and PVC sheathed cables for voltages up to and including 300/500 V, for electric power and lighting
Published by BSI on September 30, 2012
A description is not available for this item.
This document references:
BS 376-2 - Railway signalling symbols – Part 2: Specification for symbols for circuit diagrams
Published by BSI on April 30, 2015
A description is not available for this item.
This document is referenced by:
NR BR 865 - Specification for Transformer-Rectifier Units for General Railway Signalling Purposes
Published by NR on July 1, 1990
GENERAL This specification applies to transformer-rectifier units, suitable for general railway signalling purposes, whose nominal mean output voltage does not exceed 175 V irrespective of input...
This document is referenced by:
NR/GN/SIG/CAT006 - Index of NR Documents Relating to Signalling & Communications Equipment
Published by NR on June 2, 2012
This standard represents historical information and best practice for equipment and systems that are still found on the infrastructure. This is not a mandatory standard and users should check...
This document is referenced by:
NR/L3/SIG/11761 - Handbook for EBI Track 200 Audio Frequency Track Circuit
Published by NR on December 2, 2017
This document applies to all applications of EBI Track 200 on Network Rail’s infrastructure. The EBI Track 200 Handbook consists of this index and a number of mandatory sections from both Network...
This document is referenced by:
NR/L2/SIG/19820 ISSUE 12 - Signalling and Level Crossing Product Specifications
Published by NR on December 2, 2023
This manual documents current Network Rail signalling product specifications. It applies to any organisation involved in the development of any product that will be approved through the product...
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