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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.
M. w$ g" q2 d, X/ w; QThe duration of the test is# R6 B" n* u$ z" o% E
– 60 s, for frequencies up to twice the rated frequency, or [$ z/ | ?) |6 O
– 120 × rated frequency/test frequency s, with a minimum of 15 s, for higher frequencies3 \. _) D9 R2 m
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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- T8 C; O& L& Z# L9 {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? r( q7 e7 j( f
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