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引用第4楼caballo3157于2009-05-25 16:47发表的 :) c5 `; K5 `0 U# s) Z
如果是企业自己做试验,可以从三相电源的不同相上分别取电压,做洗衣机电源和耐压测试仪的初级电压。例如:取A相和中性线N为洗衣机电源,B相和C相给测试仪的高压变压器初级。 - g5 q4 L3 [, C7 D+ M% j" Y- l, k
看来这里有点争议了,我把标准搬过来讨论下,看是否大家理解上有分歧呢?2 ?0 N2 \* m" H2 ?- z$ H- U4 }# l& S
+ v# |$ @7 b9 b5 FEN 60335-1 2002 Clause 13.3 The insulation is subjected to a voltage of substantially sinusoidal waveform having a frequency of 50 Hz or 60 Hz for 1 min. For single-phase appliances, the connections are shown in figure 5. Motors and three-phase appliances are tested immediately after the1 F3 B& `& h" j. j# Z# e
appliance has been disconnected from the supply.# p- d: q+ l" X _; x8 _4 i) y$ D
# i8 }( L, W7 R; |, S这里只提到了马达和三项器具需要断电测试,是不是其他器具需要带电测试呢?
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我们再看下EN 60335-1:2002+A2:2006 Clause 13.3 The appliance is disconnected from the supply and the insulation is immediately subjected to a voltage having a frequency of 50Hz or 60Hz for 1 min, in accodance with IEC 61180-1;
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! W7 ]$ d0 T# h, s6 s. \5 U* v这里有提到先断电测试,从今年7月开始必须使用A2版EN 60335,是不是就是要求断电测试耐压呢?% D9 ]7 M) D- o8 G5 e7 L" e
还是有其他决议?请指点 |
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