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EN61010 3.5.7中对保护阻抗定义:( k: v3 v/ h5 p* @* R H/ J9 C+ ]
component, assembly of components or the combination of BASIC INSULATION and a current or5 _: B7 W9 \. f! _. I
voltage-limiting device, whose impedance, construction and reliability are such that, when3 w: i/ ?( S3 y4 U$ C
connected between ACCESSIBLE conductive parts and parts which are HAZARDOUS LIVE, it# C' e# r% G k) `
provides protection to the extent required by this standard in NORMAL CONDITION and SINGLE
" M) o/ \' u$ s- A6 hFAULT CONDITION, Z* ~0 v( E6 ]6 }% o, N- x" ~1 h
1 } {4 A) x6 {8 F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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