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Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 200
rmers. ^ kj n^n ml, Fig. 310. Fig. 311. Fig. 310.—Polyphase wattmeter connected to measure three-phase power.Fig. 311.—Polyphase wattmeter connected to a three-phase circuit with instrumenttransformers. MEASURING INSTRUMENTS 189 m^ m Fig. 312. Fig. 313. Fig. 312.—Polyphase wattmeter connected to a…Electric wiring
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