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NR BR 949

Specification for Miniature DC Non-Safety Time Delay Relay Unit, Plug-In Type, for Use in Point Control Circuits

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Organization: NR
Publication Date: 1 July 1976
Status: active
Page Count: 23
scope:

The specification relates to design requirements for a D.C. miniature non-safety type of relay unit incorporating a device which delays the operation of a relay for a predetermined time after the unit is energised.

Document History

NR BR 949
July 1, 1976
Specification for Miniature DC Non-Safety Time Delay Relay Unit, Plug-In Type, for Use in Point Control Circuits
The specification relates to design requirements for a D.C. miniature non-safety type of relay unit incorporating a device which delays the operation of a relay for a predetermined time after the...

References

This document is referenced by:
NR BR 930 - Specification For Miniature Tractive Armature DC Neutral Line Relay (Plug-In Type) for Railway Signalling Purposes
Published by NR on November 1, 1985
GENERAL The relays covered by this specification are for general railway signalling purposes, i.e. line circuits, control circuits etc. where special characteristics such as a.c. immunity, slow...
This document is referenced by:
NR BR 931 - Specification for Miniature Tractive Armature AC Immune DC Neutral Line Relay, Plug-In Type for Railway Signalling
Published by NR on May 1, 1977
FOREWORD The relays covered by this specification are for use in line circuits where alternating current at industrial frequency may be present in the circuit. These relays must not be used to break...
This document is referenced by:
BS 8586 - Pin codes for BR 930 series relays – Specification
Published by BSI on December 31, 2013
A description is not available for this item.
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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