|
引用第4楼caballo3157于2009-05-25 16:47发表的 :
, n( i0 a( O- x3 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。 k, P* E6 M j% w7 O( w' y
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?% T$ ^4 X) w% T# }* W. W7 k, j
) U2 b- F; E" H4 w% R2 B6 ]5 j0 T
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
3 W# Y L! T' t) aappliance has been disconnected from the supply. d' | q6 f6 B6 e' n7 d' O" W
! [7 k, U4 i% v
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?
; D5 N5 L& g: q. [) u( V/ b* D0 ^5 M4 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;
/ w" @( ~3 q& x$ J% L7 s1 r, ~9 Y( S+ k- [- A" k
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? l% A# ?7 N1 U9 u$ Y1 c& f! E
还是有其他决议?请指点 |
|