标题: EN 61347-1的附录A问题 [打印本页] 作者: nvnutk 时间: 2012-1-6 19:40 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: xiaotang02 时间: 2012-1-6 19:41
A.1 In order to determine whether a conductive part is a live part which may cause an electric
shock, the lamp controlgear is operated at rated voltage and nominal supply frequency, and
the following tests are conducted.
A.2 The part concerned is a live part if a current of more than 0,7 mA (peak) or 2 mA d.c. is
measured.
For frequencies above 1 kHz, the limit of 0,7 mA (peak) is multiplied by the value of the
frequency in kilohertz, but the result shall not exceed 70 mA (peak).
The current flowing between the part concerned and earth is measured.
Compliance is checked by measurement in accordance with Figure 4 and 7.1 of IEC 60990.
A.3 The voltage between the part concerned and any accessible part is measured, the
measuring circuit having a non-inductive resistance of 50 kΩ. The part concerned is a live
part if a voltage of more than 34 V (peak) is measured.
For the above test, one pole of the test supply shall be at earth potential.作者: nvnutk 时间: 2012-1-6 19:41
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？