标题: EN 61347-1的附录A问题 [打印本页] 作者: sunny.yan 时间: 2010-4-16 17:44 标题: EN 61347-1的附录A问题 请问EN 61347-1的附录A中判断是否为带电体，是否A2和A3都要测，还是只测其中任何一项，请高手解答，谢谢！作者: byl77 时间: 2010-4-16 21:17
A.1 In order to determine whether a conductive part is a live part which may cause an electric 0 J0 q* S. M- p/ d9 z) cshock, the lamp controlgear is operated at rated voltage and nominal supply frequency, and& m4 g X- c* _: S' O
the following tests are conducted. . V! ? l) z- F. S" KA.2 The part concerned is a live part if a current of more than 0,7 mA (peak) or 2 mA d.c. is % h3 I$ q4 M/ P( c/ hmeasured.0 b, J8 U4 m. Z- P0 X% G- X% D2 F/ ~, A
For frequencies above 1 kHz, the limit of 0,7 mA (peak) is multiplied by the value of the / m, ]1 X& Z+ ] ^9 |1 yfrequency in kilohertz, but the result shall not exceed 70 mA (peak). # c2 ~ }* ?5 C5 WThe current flowing between the part concerned and earth is measured.& H' N6 A7 k' C7 p
Compliance is checked by measurement in accordance with Figure 4 and 7.1 of IEC 60990.: A/ ^' T! S/ @) e2 M
A.3 The voltage between the part concerned and any accessible part is measured, the( X1 R0 t1 J; I4 y' u) Q
measuring circuit having a non-inductive resistance of 50 kΩ. The part concerned is a live! S: F7 _/ s9 _6 q9 Z: ?4 Y
part if a voltage of more than 34 V (peak) is measured. " b, \2 A; L( \- W sFor the above test, one pole of the test supply shall be at earth potential.作者: sunny.yan 时间: 2010-4-20 12:53
比如要判定金属外壳是否为带电部件，是不是A2和A3两种方法同时要测， 还是用其中任一种测就可以了？作者: windswallow 时间: 2013-5-24 09:45
关于这个问题，大家的讨论结果如何？作者: buffallo 时间: 2013-12-7 08:50
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