NR BR 934
Specification for Miniature Tractive Armature AC Immune DC Slow Release Neutral Line Relay, Plug-In Type for Railway Signalling Purposes
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| Organization: | NR |
| Publication Date: | 1 May 1977 |
| Status: | active |
| Page Count: | 31 |
scope:
This specification relates to design requirements for miniature tractive armature D.C. slow release neutral line relays of the plug in type for use in railway signaling circuits, irrespective of the presence in the circuit of alternating current at industrial frequency. The design is based on the requirements that the delay is sufficient to cover the changeover time of an A.C. immunized neutral line relay manufactured in accordance with B.R.
Document History
NR BR 934
May 1, 1977
Specification for Miniature Tractive Armature AC Immune DC Slow Release Neutral Line Relay, Plug-In Type for Railway Signalling Purposes
This specification relates to design requirements for miniature tractive armature D.C. slow release neutral line relays of the plug in type for use in railway signaling circuits, irrespective of the...
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