BS-519 › Historical Revision Information
Specification for tractive armature direct current neutral-polar line relays for railway signalling
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Specification for tractive armature direct current neutral-polar line relays for railway signalling
Keywords
Relays, Switchgear, Armatures, Railway signals, Railway equipment, Railway fixed equipment, Dimensions, Seatings, Repeaters, Electric contacts, Contact resistance, Pressure, Electric terminals, Marking, Electrical testing, Voltage, Direct current, Electrical resistance, Clearances, Neutral-polar relays, Electrical equipment, Signal devices Railway applications
To find similar documents by classification:
45.040 (Materials and components for railway engineering)
Document Number
BS-519
Revision Level
PD 4017
Status
Cancelled
Publication Date
Jan. 1, 1961
Committee Number
GEL/9