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引用第4楼caballo3157于2009-05-25 16:47发表的 :
) O5 o( G8 I* k3 v$ u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。
1 I' c" W/ n1 d: 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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4 C- D" e% n* M7 A9 AEN 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% F0 a4 _) ^4 M# n7 p
appliance has been disconnected from the supply.
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4 b/ p- m" }$ ?, b$ b8 c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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M* w& q3 z- E0 C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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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?9 C8 w7 K; }, z5 y+ j: E9 C7 a, C
还是有其他决议?请指点 |
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