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在IEC标准中应该是先打泄露再打耐压,标准中有明确要求(IEC60335-1):
. Y% ]) j8 q5 |" Z, v13.3:(承接13.2)The appliance is disconnected from the supply and the insulation is immediately subjected to a voltage having a frequency of 50 Hz or 60 Hz for 1 min, in accordance with
+ x7 ]7 Y, T. f! G8 r4 l: d( fIEC 61180-1.
8 ]/ G5 X5 g u5 B1 C1 ?16.3:Immediately after the test of 16.2, the insulation is subjected to a voltage of3 n+ Q% Q i, J% r& |! \2 G* R$ u
substantially sinusoidal waveform having a frequency of 50 Hz or 60 Hz for 1 min. The values: k& z+ L1 x1 b
of the test voltage for different types of insulation are given in table 7.& n6 o3 x+ E6 O6 r# u4 F
. s# S: C; Y! N4 V5 m% C p& K
美规中好像没有要求耐压与泄露的顺序,不过一般的做法都是先打泄露,让器具工作到热稳定状态再打耐压(考虑到产品在高温下的耐高压能力比冷态下弱)。! E% ?! Q7 a; [
y- L4 f" |" @" d1 o* m
以上仅为个人看法,如有不正之处请各位大侠指正。 |
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