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Erschienen in:
1979 | OriginalPaper | Buchkapitel
Windings
verfasst von : H. W. Kerr
Erschienen in: Modern Power Transformer Practice
Verlag: Macmillan Education UK
Enthalten in: Professional Book Archive
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The design of any transformer winding must fulfil certain basic requirements. It must withstand the electric stresses imposed on it during test. These tests are intended to ensure that a transformer passing them will give trouble-free service for many years under the conditions it is likely to meet after its installation. They are therefore of three sorts: (1) a test at power frequency for about 1 min to prove its margin over its operating voltage, (2) a surge test and (3) a switching surge test—both (2) and (3) are to prove its ability to withstand voltage surges due to atmospheric disturbance and to switching.