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引用第23楼iec60950-1于2008-10-08 14:42发表的 :8 ^. N. A4 `; \# ?
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,
0 R+ [" ~% i4 [$ v3 ~% p0 Xconnected in parallel with the insulations to be tested, are disconnected. Inductors and
- L7 I9 T M2 @+ Z( ^$ O' L, _6 lwindings which otherwise would prevent the test from being made, are also disconnected.2 M# k2 s; ^3 s6 {5 c: z; t
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 x6 Q* V2 V# c2 g* m4 D6 y
所以即便是按标准来说,在FUSE前也是不行的。 |
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