BS 561:1951

Specification for alternating-current line relays double-element 3-position (for railway signalling)

BSI Group , 06/15/1951

Publisher: BS

File Format: PDF

$80.00$160.02

Description

Standard By:BSI Group , 06/15/1951

Published:06/15/1951

Pages:12

ISBN(s):0580006670

File Size:1 file , 360 KB

Language:English

Note:This product is unavailable in Ukraine, Russia, Belarus

2-element, 3-position relays for railway signalling circuits up to 250 volts. Mounting, mechanical clearances, bearings, coils, contact capacity, contact pressure, contact resistance, flexible connections, terminals and terminal markings, insulation tests, pick-up and drop away values, labelling and marking, finish, pointer scale.Cross References:BS 442

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