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引用第23楼iec60950-1于2008-10-08 14:42发表的 :) c/ g6 ^" d8 A/ A
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,
; L) H4 u8 y, s4 m5 e3 Lconnected in parallel with the insulations to be tested, are disconnected. Inductors and( n" ^6 Q! R* [
windings which otherwise would prevent the test from being made, are also disconnected.9 ~$ U: T6 }& K* r- p/ ]
Table 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。
7 s8 Q6 O$ s3 P S& C* I所以即便是按标准来说,在FUSE前也是不行的。 |
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