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本帖最后由 emailsimon 于 2016-7-7 11:42 编辑 : w6 O8 i6 e7 I
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请教标准中,如下条款 ,感觉很抽象,不知道怎么理解5 }6 B) p2 J- L" E
Circuits with TERMINALS which are HAZARDOUS LIVE8 l. w3 W+ B4 ]) E
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These circuits shall not be connected to ACCESSIBLE conductive parts, except for circuits
5 j, u* T: k% n6 p1 V+ ~9 @ e. |which are not MAINS CIRCUITS, and which are designed to be operated with one TERMINAL. T% E% j* f J# t9 ?2 P
contact at earth potential. In such cases, the ACCESSIBLEconductive parts shall not be " Z; b4 ~1 i- }0 v% D
HAZARDOUS LIVE. ( d6 I2 C- M& ]7 F+ W1 o
If such a circuit is also designed to be operated with one ACCESSIBLE TERMINAL contact (signal + {$ ^: k* |' p. H3 N* {0 n5 x
low) floating at a voltage which is not HAZARDOUS LIVE, this TERMINALcontact is permitted to be ; J/ b, s, r" @% B7 L4 a/ {
connected to a common FUNCTIONAL EARTH TERMINAL or system (for example, a coaxial 1 k' b; _9 ^8 g
screening system). This common FUNCTIONAL EARTH TERMINALor system is also permitted to * |/ |0 E8 w( ^- ^. H" j: V8 k; r
be connected to other ACCESSIBLE conductive parts.
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我的理解:
5 t- H* f2 f9 O2 p带有危险带电端子的电路6 R3 u& A9 }! O* M+ _) }
这些电路不可以连接到可接触导体部分, 但是~~~~除外3 y: x# Y+ X: _/ g' w
1 l0 j' m) B3 f9 s* p- @: ~If such a circuit is also designed to be operated with one ACCESSIBLE TERMINAL contact (signal ! f4 z( M1 B K# h
low) floating at a voltage which is not HAZARDOUS LIVE
2 l9 J) z6 C+ Y/ q( C# U3 z第一段中要求接地了, 这里说的非危害悬浮电压怎么理解?
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; {: y. E7 C7 D! Q* T% S- \! X8 Rthis TERMINALcontact is permitted to be
" N7 m: n& u; n' K F lconnected to a common FUNCTIONAL EARTH TERMINAL or system (for example, a coaxial
) P( W9 S+ C9 U" \7 W6 qscreening system). This common FUNCTIONAL EARTH TERMINALor system is also permitted to
* W0 F" [9 H* {0 |1 Cbe connected to other ACCESSIBLE conductive parts.
j& l( C1 V3 B$ M: k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???6 B% A* h; @* y/ U9 D! s
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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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