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引用第23楼iec60950-1于2008-10-08 14:42发表的 :/ C0 N% u/ B0 D% u" j
从标准意义上来说,放保险丝前面和后面都是允许的,前提是VDR满足标准的相关要求!VDR通过认证,是不需要承受基本绝缘的抗电强度测试,测试时需要断开此元件。 IEC60065"Resistors, capacitors and RC-units complying with 14.1, 14.2.1 and 14.2.2 respectively,
" d4 U* D/ u5 p9 V* Pconnected in parallel with the insulations to be tested, are disconnected. Inductors and
# a8 n H. i+ }' Q" U. mwindings which otherwise would prevent the test from being made, are also disconnected.
& K& e4 H: M; P' kTable 5 – Test voltages for dielectric strength test and values for insulation resistance".可没说要断开压敏电阻来测抗电强。
+ F9 T! S8 O1 F' M; O所以即便是按标准来说,在FUSE前也是不行的。 |
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