Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 217
switches. The operation of the openingcoil A moves the auxiliary switch S to the left (a side), and the operation of the closing coil Bmoves it to the right (& side). The connections are such that both switches cannot be closedat the same time. When the closing coils B are operated, they… … Fig. 356.—Controlling circuit for a solenoid-operated oil switch. CJosirjtCoil
Electric wiring
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