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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.' t0 j% z7 Q- T" M% S9 |; l- {% z' p
The duration of the test is
" ^7 e( M: Y4 L O8 ~) R! }– 60 s, for frequencies up to twice the rated frequency, or
8 G: h" x" L, T# z& h' P0 x– 120 × rated frequency/test frequency s, with a minimum of 15 s, for higher frequencies
; N7 ^+ Z. P) M' C5 MA 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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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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