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EN61010 3.5.7中对保护阻抗定义:$ a* b. K# K; f8 S4 \# I
component, assembly of components or the combination of BASIC INSULATION and a current or
4 w) p- [6 ^8 b: }voltage-limiting device, whose impedance, construction and reliability are such that, when/ k9 H7 {/ Y1 k9 B
connected between ACCESSIBLE conductive parts and parts which are HAZARDOUS LIVE, it
4 V/ K g- C" |provides protection to the extent required by this standard in NORMAL CONDITION and SINGLE3 f2 T; M2 y2 N
FAULT CONDITION
% C. J, O/ O$ D5 G" J+ E! Z, [+ [. F; n: v1 @7 e3 n/ C
保护阻抗具体是指哪些呢?如果仅仅是防止可接触导电部件危险带电,那如果次级SELV电路不可接触,Y电容还算不算保护阻抗?I类产品的金属外壳和危险带电部件之间算the combination of BASIC INSULATION and a current or voltage-limiting device吗? |
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