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NR BR 867

Specification for AC Immune, DC Track Feed Units

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Organization: NR
Publication Date: 1 July 1990
Status: active
Page Count: 18
scope:

This specification applies to a feed-set suitable for feeding an a.c. immune d.c. track circuit. The feed-set is required to operate from an a.c. supply and provide a d.c. output for various load conditions. The output is required to be immune to the effects of 50 Hz voltage.

Document History

NR BR 867
July 1, 1990
Specification for AC Immune, DC Track Feed Units
This specification applies to a feed-set suitable for feeding an a.c. immune d.c. track circuit. The feed-set is required to operate from an a.c. supply and provide a d.c. output for various load...

References

This document references:
NR BR 939 - Specification for Miniature Tractive Armature AC Immune DC Neutral Track Relay, Plug-In Type for Railway Signalling Purposes
Published by NR on June 1, 1977
This specification relates to design requirements for miniature tractive armature A.C. immune D.C. neutral track relays of the plug-in type for use in railway signalling circuits
This document is referenced by:
NR RT/E/PS/11755 - DC Track Circuits (aka NR/PS/SIG/11755)
Published by NR on December 1, 2000
The contents of this Product Specification apply to both new and existing d.c. track circuit installations, and shall be read in conjunction with RT/E/S/11752. The following types of track circuit...
This document is referenced by:
NR BR 1900 - General Specification for Solid State Inter-locking Equipment
Published by NR on May 1, 1986
Introduction This specification states the standards to be applied in the design, construction and testing of solid state interlocking and associated equipment.
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...
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