Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 78
meter. 1 Synchronizing receptacle. 1 Oil-switch, automatic. 1 Potential transformer. 2 Current transformers. 1 Switch for control of regulator where a regulator is used and operated bymeans of a small motor. A three-phase feeder panel requires: 3 Ammeters. In some cases only one is necessary. 1… … Fig. 24. Standard Switchboard Panel Direct-Current feeder panels contain: 1 Ammeter. Two are required for a 3-wire feeder.1 Circuit breaker, single-pole. Two are required for a 3-wire feeder.1 or more main switches, single-pole or double-pole, and single- or double-throw, depending upon the number…
Electrical engineering
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