BR933A Sep 1971
Specification for Miniature Tractive Armature AC Immune DC Slow Pick-up Neutral Line Relay Plug-In Type for Railway Signalling Purposes
Synopsis
This specification relates to the design requirements of miniature tractive armature D.C. slow pick-up neutral line relays for use in railway signalling circuits, irrespective of the presence in the circuit of alternating current at industrial frequency.
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Registered
Withdrawn
Other
- Issued:
- 01/09/1971
- Published:
- 01/09/1971
- In Force:
- 01/09/1971
- Withdrawn:
- 31/12/1999
Details
| Consultation Status | Closed |
| Vehicle Assessment | No |
| Lead Committee | Control Command and Signalling - CCS |