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接地在60950里面1.7.7讲到protective earthing connector 连接使用带圈的接地符号,使用protective bonding connector 可以不用接地符号或者使用 不带圈的符号.
/ A7 r, P5 _$ C! t& ?后面还有两条豁免条款,谁能来解释下) R2 C( w/ e0 M
The following situations are exempt from the above requirements:
6 g9 W9 _5 `5 u– where terminals for the connection of a supply are provided on a component (for
6 X) l8 S: ]/ e8 `7 o/ y* Hexample, a terminal block) or subassembly (for example, a power supply unit), the
+ D: c9 @ k+ `2 s( c( `8 e( f2 b& Lsymbol(没圈的接地符号) is permitted for the protective earthing terminal instead of(有圈的接地符号) ;6 C# Q9 j* {3 J6 t9 y
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– on subassemblies or components, the symbol(有圈的接地符号) is permitted in place of the symbol(没圈的接地符号). N# X D! C1 K; k X3 k
provided that it does not give rise to confusion.
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下面我把CTL 关于这个接地符号的决议放上来,大家也看看,我没看懂+ J% O# ?. ]( T) u* F
Question:
8 z. q4 {# C2 m5 m; X0 |Is this requirement applicable to products provided with a mains inlet? If yes, is the symbol/ R8 p }9 O7 r# e. A" K0 b
IEC 417 No. 5019,(有圈的接地符号) then, required at the location where the earthing conductor (coming from
+ Y( L' p! q% d4 ^! }4 ^7 v Vthe inlet) is terminated?" j; ?$ F; A7 Q% B+ h
Decision:
- \" r# D0 @# [The symbol is not required in the above mentioned case a: O6 Q5 _4 |( @6 \. ~% R
Explanatory notes:0 p N, y9 C1 C/ y! \
It has been reported that some test houses require this symbol. |
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