Protective Relays: Their Theory, Design, and Practical Operation

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...pair of voltage leads which give about 86 per cent power-factor lead on the meter. The second method is to use a single-phase, indicating wattmeter, and with a lagging power factor on the line between 50 and 100 per cent select the pair of voltage leads which give the highest reading. Just after making the above test ...

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