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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.
0 Y% n/ s: |/ a( d8 A8 a+ C$ n1 |The duration of the test is- Y% k- Y/ R) G1 |
– 60 s, for frequencies up to twice the rated frequency, or2 @( {$ n! I6 k- x+ Q2 }
– 120 × rated frequency/test frequency s, with a minimum of 15 s, for higher frequencies( K: M* o, L3 ~! l. g
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."
. y' g1 Q/ u* p; z# z
8 G+ [% \& l6 x) D& b+ k/ Q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？8 _" e& r9 B" P4 B/ C
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发表于 2012-8-22 13:23
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发表于 2012-8-22 14:20
