|
引用第4楼caballo3157于2009-05-25 16:47发表的 :
\1 b# k8 W {8 ^' 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。
. u2 y; H7 e$ Q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?
% U3 r/ ]9 b4 `' u7 h- I6 k& r2 x- I9 q# o# L/ G
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( W/ f, A, G; N- c
appliance has been disconnected from the supply.
! B7 B) E" l" H/ K" o2 q6 F
8 f) d0 N' u, D! o0 p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?
4 j8 p& B+ p) ^+ S b* D2 P. d5 ~8 t
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;
$ }! a7 s3 e+ V9 q1 X# p: O; B* S& [: e6 }) p. H! [) f" K* \0 ] Y8 Q
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?
. \; F9 z$ P; Y& S5 u! I: V还是有其他决议?请指点 |
|