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DIELECTRIC VOLTAGE WITHSTAND TEST - INDUCED POTENTIAL
2 d' |5 u. R. P9 a9 O2 H8 g METHOD----Following the Applied Potential tests, the [primary] [secondary] winding of each transformer was subjected to an alternating potential of twice the [primary] [secondary] voltage rating as tabulated below. During these tests, the [primary] [secondary] windings were open. The frequency of the applied voltage was 400 Hz and was maintained for a period of 18 s.% O+ m! W! U" I4 X% ^
问题是:次级也需要做这个测试吗?( x* {- E* b% P, @. u3 w
9 t3 R' u2 f8 `9 P
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