An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 421
eters to carry thousands ofamperes, or voltmeters to measure the high voltages now used in long-distance trans-^\ mission, we use instru- ment transformers.By means of a poten-tial transformer, whichis merely a step-downtransformer with acapacity of only a fewwatts, we may meas-ure the voltage on… … Fig. 263. — Current transformer for mountingon bus bar and plan of connections.
Electricity · Magnetism
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