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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.5 j, F# T8 h6 z r
The duration of the test is
* G/ \$ z4 p' Z1 c% a– 60 s, for frequencies up to twice the rated frequency, or
5 d% \7 v( L6 X1 M% ]3 |– 120 × rated frequency/test frequency s, with a minimum of 15 s, for higher frequencies- L% R% _; z' Y X* T
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."" u; Y: U; l! A
4 h/ _5 B! \# S. q4 ]7 J; `2 u
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?
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