Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 160
Fig. 237.—Multi-switch starter for a compound motor. No-load release in series with theshunt field winding. In starting, resistance is cut out of the armature circuit by closing switchesconnected between the plus side of the hne and the contacts 1, 2, 3, etc., the last switch beingheld in position… … Fig. 238.—Connections of a multi-switch starter for a compound motor with no-loadrelease connected across the line. The switches are mechanically interlocked so that they canonly be closed in the right order, and each one is held closed by the one preceding it. Switch1 is held by the no-load…
Electric wiring
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