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引用第4楼caballo3157于2009-05-25 16:47发表的 :* v% e7 ^% c2 l
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。
# ? U; p N& b( s( b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 {5 h5 t9 O, m: n
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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, C, D+ }, {) Z
appliance has been disconnected from the supply.
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# Z+ ?* K8 A$ q+ V; t' j2 a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;1 L* M y1 M: @- x! s/ g/ r9 c& @
) P( e1 E4 s3 N8 b s/ D1 w0 f9 X7 w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?
/ v* S3 b$ C; J2 z还是有其他决议?请指点 |
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