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60335-2-65中16.101章的标准上提到“Twice the working voltage is induced in the secondary winding of the transformer by applying a sinusoidal voltage having a frequency higher than rated frequency to the primary terminals.
( h0 n, Z S* |$ ?& fThe duration of the test is, {9 s5 p0 h/ X- a
– 60 s, for frequencies up to twice the rated frequency, or
9 [4 n5 V0 a0 x' a, [: t8 }/ r– 120 × rated frequency/test frequency s, with a minimum of 15 s, for higher frequencies& B9 ?0 ~" n3 x7 f
A maximum of one-third of the test voltage is applied and is then rapidly increased without creating transients. At the end of the test, the voltage is decreased in a similar manner to approximately one-third of its full value before switching off."
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3 T3 L3 ^5 v( I) E7 Y1 R+ E有没有人实际操作过该测试?按照标准要求,是否在变压器初级施加一高于额定频率的正弦波电压,使次级产生两倍的工作电压。问题是初级施加高于额定频率的正弦波电压,次级是否可以产生两倍的工作电压?2 v- N3 L: h; D6 ]7 y2 z6 j/ s) V
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