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EN61010 3.5.7中对保护阻抗定义:
8 E$ _0 A; P2 O& @component, assembly of components or the combination of BASIC INSULATION and a current or
7 p4 T# P; I1 c/ R) Svoltage-limiting device, whose impedance, construction and reliability are such that, when7 x" m) N) r; b! H' t7 M7 |4 v
connected between ACCESSIBLE conductive parts and parts which are HAZARDOUS LIVE, it
1 B' l# M9 Y+ o" q2 c& {provides protection to the extent required by this standard in NORMAL CONDITION and SINGLE. a* I- p) ~4 I, J
FAULT CONDITION
4 `% R _5 j2 h0 L+ ~" f
& [+ H) I. {9 q% S) E% Q: J2 U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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