Standard provides for relays having up to four neutral contact arms and up to four polar contact arms; definitions; dimensions; recommended arrangement and marking of terminals.
Tractive armature direct current neutral-polar line relays for railway signalling
Brit Standards Instn -- Brit Standard
1950
17 pages
Standard
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Recommended Design Criteria for Tractive-Armature Direct-Current Biased Neutral Relay
British Library Conference Proceedings | 1995
|Recommended Design Criteria for Tractive-Armature Direct-Current Neutral Relay, Plug-In Type
British Library Conference Proceedings | 1995
|British Library Conference Proceedings | 1995
|Recommended Design Criteria for Tractive-Armature Direct-Current Polarized Relay
British Library Conference Proceedings | 1995
|British Library Conference Proceedings | 1995
|