Requirements for units (gate-end boxes) in 1100 V three-phase a.c. circuits for contactor starting and for protection of coal-getting, conveying and similar machinery; also other voltages particularly 550 V.
BS 5126-1:1974
Original price was: $190.50.$95.00Current price is: $95.00.
Specification for mining type flameproof supply and control units for use on systems up to 1100 V-160/250 A direct-on-line motor starters (for use on three-phase a.c. circuits)
BSI Group , 08/30/1974
Pages: 22
