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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.
: O: j. C+ Z m# k* W9 \后面还有两条豁免条款,谁能来解释下8 ]% N( ~/ \3 }% E: Y
The following situations are exempt from the above requirements:
8 a. q T7 b0 K# }+ F– where terminals for the connection of a supply are provided on a component (for
! O1 v9 I. {, o8 ?0 I7 z; }example, a terminal block) or subassembly (for example, a power supply unit), the
0 ^0 e! _2 d! ^symbol(没圈的接地符号) is permitted for the protective earthing terminal instead of(有圈的接地符号) ;
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* R1 }9 P) f5 A% B" z' {– 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)
# ^9 n# d8 ]$ {3 ]- D& w; fprovided that it does not give rise to confusion.; d/ `& j: S5 u5 m8 q1 _
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8 r! z% C! ^$ I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4 f' H h- O: j
Question:1 D8 S: d3 L6 o/ \' A" w/ J
Is this requirement applicable to products provided with a mains inlet? If yes, is the symbol3 L5 f. V% t/ I# C
IEC 417 No. 5019,(有圈的接地符号) then, required at the location where the earthing conductor (coming from
s$ i5 w9 q6 P( U. H) Sthe inlet) is terminated?* t( r& L6 p; l+ V
Decision:, h7 r' c' }4 u! |$ j
The symbol is not required in the above mentioned case7 G6 f- R9 f0 f* j0 e
Explanatory notes:3 P, J! Q, O7 E
It has been reported that some test houses require this symbol. |
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