|
EN61010 3.5.7中对保护阻抗定义:
; V% m8 l `3 m! Dcomponent, assembly of components or the combination of BASIC INSULATION and a current or( J9 p" I3 B5 ?7 p
voltage-limiting device, whose impedance, construction and reliability are such that, when
: j" o e& q# b% u6 r8 B- z! H' Gconnected between ACCESSIBLE conductive parts and parts which are HAZARDOUS LIVE, it
% e7 Y G& [/ v8 e. D7 E8 oprovides protection to the extent required by this standard in NORMAL CONDITION and SINGLE
5 m. U+ I. `6 M% w2 d& B. lFAULT CONDITION) t S& F: z; J3 `; R6 r0 [8 k8 b& u( i
# j" N1 D) h6 j) E+ _" n, H* ]5 S( 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? |
|