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BS 561:1951 | 15 Jun 1951 | BSI Knowledge
Standard
Withdrawn
BS 561:1951
Specification for alternating-current line relays double-element 3-position (for railway signalling)
Published:
15 Jun 1951
•
Withdrawn:
8 Jul 2014
Overview
Preview
References
History
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Product Details
Descriptors
Railway fixed equipment
Electric contacts
Signal devices
Repeaters
Clearances
Contact resistance
Railway signals
Railway equipment
Electrical equipment
Relays
Pressure
Switchgear
Dimensions
Seatings
Alternating current
Electrical testing
Electric terminals
Voltage
Marking
ICS Codes
29.120.70 Relays
45.040 Materials and components for railway engineering
Committee
GEL/9
International relationships
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ISBN
0 580 00667 0
Publisher
BSI