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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.
! X! l5 L) r1 Q6 H后面还有两条豁免条款,谁能来解释下. w6 J/ z" Q! \& s. \
The following situations are exempt from the above requirements:
3 j b8 f. } w- k! E– where terminals for the connection of a supply are provided on a component (for
8 T8 I" E0 m# J0 W; F' w+ ^example, a terminal block) or subassembly (for example, a power supply unit), the
2 Z7 j0 F* r) |2 hsymbol(没圈的接地符号) is permitted for the protective earthing terminal instead of(有圈的接地符号) ;6 H+ O/ g' s0 d" p2 s
% U$ z; r. g- k$ I8 \– 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)
# o+ f% p w6 Z2 F% T% v- Kprovided that it does not give rise to confusion.# n4 Z8 y9 |) ~6 C
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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
9 g2 z5 \8 [5 w; b! X0 R4 dQuestion: E/ {. w5 _4 e: p; l. v" c' \
Is this requirement applicable to products provided with a mains inlet? If yes, is the symbol/ n8 N+ }: F" e; M
IEC 417 No. 5019,(有圈的接地符号) then, required at the location where the earthing conductor (coming from4 ]' d/ d8 {# l& j: |6 D% P. W7 |' I
the inlet) is terminated?
; l( I: S+ h+ L$ w! IDecision:
* m- p1 C: k0 eThe symbol is not required in the above mentioned case
8 L: y4 ], ]! J( n7 ~Explanatory notes:
6 ~9 R$ K$ b! N- Y3 SIt has been reported that some test houses require this symbol. |
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