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引用第4楼caballo3157于2009-05-25 16:47发表的 :
7 b7 U1 D$ m; v8 k/ w" G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。
/ b; k, b% ^- R- J" z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
0 `+ Y9 h: `" F0 yappliance has been disconnected from the supply.( g: Q6 w1 Y/ s( y. ]
- Y5 F2 o5 Z9 R" Z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?5 t! q( _% b! A3 j3 d+ ]5 g
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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;6 R! N& S# m7 I" e
5 d! R& J! A# u, e1 j7 I/ z$ P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?
4 X+ p" P7 L6 N# R+ w还是有其他决议?请指点 |
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