Inside Out Library
Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 197
Fig. 298. Fig. 299. Fig. 300. Fig. 298.—Ammeter connected to a .series transformer.Fig. 299.—Voltmeter connected to a shunt transformer. Fig. 300.—Single-phase wattmeter connected with series and shunt instrument trans-formers. … Fig. 301.—Two single-phase wattmeters connected for measuring two-phase power. MEASURING INSTRUMENTS 187Electric wiring
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