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本帖最后由 emailsimon 于 2016-7-7 11:42 编辑 ; }5 Z8 Q6 A- m0 Q' a. N. s- p o |
* i. x3 D8 p2 _" B1 _3 `; c请教标准中,如下条款 ,感觉很抽象,不知道怎么理解
2 M' W7 F; l9 @; M6 K$ N# m8 Q; WCircuits with TERMINALS which are HAZARDOUS LIVE. \# k3 S( y! u
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These circuits shall not be connected to ACCESSIBLE conductive parts, except for circuits
1 I' o: e1 m; L& |4 f9 q1 D3 r3 qwhich are not MAINS CIRCUITS, and which are designed to be operated with one TERMINAL
/ O$ Z _& N" R+ x, k! V4 Icontact at earth potential. In such cases, the ACCESSIBLEconductive parts shall not be # I( `+ y% ?' W1 v9 D) b/ A
HAZARDOUS LIVE. 0 Y( s" c) h2 K& U, _6 N O: ?0 e
If such a circuit is also designed to be operated with one ACCESSIBLE TERMINAL contact (signal 7 V6 c) c1 v! r
low) floating at a voltage which is not HAZARDOUS LIVE, this TERMINALcontact is permitted to be 2 U3 c& S) i! I8 h* A; H* \
connected to a common FUNCTIONAL EARTH TERMINAL or system (for example, a coaxial , R$ C* J% d% C" i$ ^3 y
screening system). This common FUNCTIONAL EARTH TERMINALor system is also permitted to
) J9 b- [9 B+ r' Ube connected to other ACCESSIBLE conductive parts. 6 H2 p' B3 N/ ~# z% X: n' e
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我的理解:
2 \2 n: L0 Q5 G带有危险带电端子的电路
4 u' o* n y2 s! G& S+ a+ @& f这些电路不可以连接到可接触导体部分, 但是~~~~除外) h1 r# o5 t5 m* i5 D
U( d; g! q; D; X% F) s' PIf such a circuit is also designed to be operated with one ACCESSIBLE TERMINAL contact (signal 6 c8 d0 R0 C! G* F! ~
low) floating at a voltage which is not HAZARDOUS LIVE% f2 U8 D3 D8 Q% q5 Q
第一段中要求接地了, 这里说的非危害悬浮电压怎么理解?0 y4 I: f I9 m7 O- @# B
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this TERMINALcontact is permitted to be 0 h! Y3 L6 Y6 J8 o1 z7 Q
connected to a common FUNCTIONAL EARTH TERMINAL or system (for example, a coaxial ; M! B1 b' g& g% X2 U! H% A b" T
screening system). This common FUNCTIONAL EARTH TERMINALor system is also permitted to 9 h8 ?# d Z! @8 B" F0 Z) }8 W
be connected to other ACCESSIBLE conductive parts. ; v% {, \) ?( E; g8 y/ v7 X& k4 z
第一段已经允许接到地系统了,这里有牵扯出公共功能地系统??太抽象了,到底在说什么???- q1 Y% w. u" y! l1 J
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如果我的设备,有一个输出端子,是接客户的设备,电压不能确保一定无危害,该怎么处理???
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