Electric lifts (elevators)

Electric lifts (elevators)

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is necessary to . provide either a relay or additional contacts on the reversing contactors for the brake- motor circuit in order ... Referring to the schematic wiring diagram of a 3-phase, 2-speed, car-switch operated lift with a pole- changing motoranbsp;...

Title:Electric lifts (elevators)
Author:" "Contactor (pseud.)
Publisher: - 1941


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