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本帖最后由 canghai 于 2012-10-17 17:35 编辑
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Touch current test 在60065和60950里面测试部位有差别吗?3 t# g% w3 V1 Y7 p" |
6 I6 w# _4 k0 n* i8 IIEC 60950 里面有明确提出 A端接待测点,B端接中线;; K( M/ Y; s) v g6 [7 I
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IEC 60065 CLAUSE 9.1.1 : In order to verify that a part or a contact of a TERMINAL is HAZARDOUS LIVE, the following
: _% Y3 {4 v. Umeasurements are carried out between any two parts or contacts, then between any part or contact and either pole of the supply source used during the test. Discharges shall be measured to the TERMINAL provided for connecting the apparatus to the supply source, immediately after the interruption of the supply. $ S3 X# Z! P2 B6 i# b' W; o5 @
b) the TOUCH CURRENT, expressed as the corresponding voltages U1 and U2, and measured in accordance with IEC 60990, with the measuring network described in annex D of this standard, exceeds the following values.( x, O: D. w/ R" C$ B# m
6 m8 Q/ l8 |& e* p对于这个标准,测试部位应该是采用IEC 60990的接法即和IEC60950一致?还是按照上面红色部位的描述测试:两个可接触部位以及L/N和可接触部位之间?
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其次需要考虑故障状态下的漏电流吗?
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还有是否需要带负载?比如TV或adaptor?; v& ]% i1 _' S2 U1 [
Q" Z" n' A' i输入100-240V ac 50-60Hz 找过几家知名的测试结构,他们的方法有些差异,有些没有考虑频率直接在50Hz下测试,有些测试的是L/N对输出可接触端,有些测试的是中线对输出可接触端。. R& g( a2 @8 V) Y
% m6 ~& ]4 X' Q) u# o个人理解:频率应该采用高频率,60065从标准上看似乎是需要测试L/N对输出,可感觉遵从IEC60990测试中线到可接触端更有意义。盼高手解惑!
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