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DIELECTRIC VOLTAGE WITHSTAND TEST - INDUCED POTENTIAL
, r& y9 X4 q \+ }" F0 o+ g8 T 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' |$ N: J, e4 ]; n) F
问题是:次级也需要做这个测试吗?- A: s. I9 A! C
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