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引用第4楼caballo3157于2009-05-25 16:47发表的 :
' f* z6 |+ @% Y4 L# {4 v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。
' Q9 N: m! n7 H# H2 [ R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?
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EN 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 the
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, o7 A; m. @# k( R) D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?3 e7 d. |6 T, R+ T. I
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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;2 s, y/ D2 l9 w: _! G" H
2 y2 k: x6 m; |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?+ X0 n4 @5 m( g9 K
还是有其他决议?请指点 |
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