|
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.
2 d5 r8 x- k2 A% y3 F- h$ fThe duration of the test is5 ?; p! B2 g5 L* c6 {
– 60 s, for frequencies up to twice the rated frequency, or
& ~1 e% G' n8 N R0 A– 120 × rated frequency/test frequency s, with a minimum of 15 s, for higher frequencies
. b; Q; L/ |# |0 f- GA 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."
}- a+ y3 v$ S* @) }& n& }5 p: l2 j) z, ~# S- x8 h0 O- Z
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?
1 i( \3 T. v, J8 E. X |
|