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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.3 ~0 q, u5 a+ l; j" {8 H8 A
后面还有两条豁免条款,谁能来解释下
( L4 g$ b/ `1 z! Q: X OThe following situations are exempt from the above requirements:
" B! _% Y" [ b9 @. S– where terminals for the connection of a supply are provided on a component (for
, s) s2 l+ Q! p/ q1 e5 u D r3 Hexample, a terminal block) or subassembly (for example, a power supply unit), the' v! |# x# f5 q- O$ w# I
symbol(没圈的接地符号) is permitted for the protective earthing terminal instead of(有圈的接地符号) ;/ t o, O0 u* N: O" H
* m' I# |5 y# `4 k# P: B8 M– 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)
; c$ ?; h" T% B$ n+ k5 Eprovided 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
) e6 e, I+ s& @" ]* _Question:
; Q* u; }- q( l) ]) E: M1 n* ^+ pIs this requirement applicable to products provided with a mains inlet? If yes, is the symbol; X; E3 C) A5 N, c7 Q% A3 N+ P
IEC 417 No. 5019,(有圈的接地符号) then, required at the location where the earthing conductor (coming from! M6 a1 k2 N- ?
the inlet) is terminated?5 ?0 H8 r) _) |- u/ n8 b
Decision:8 i% b0 x- [8 G' s6 m
The symbol is not required in the above mentioned case& m% T/ B6 p2 ^( p) K
Explanatory notes:
) U6 ~/ @1 e" {1 D3 v _It has been reported that some test houses require this symbol. |
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