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发表于 2020-8-31 20:39
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非常感谢大家的回答,我也发邮件咨询了VDE, VDE也认可变压器初级和次级不加Y电容。是第三方认证机构没搞清楚,下面是跟VDE沟通的邮件内容分享给大家:- t6 l4 e; T0 G
In order to meets the reinforced insulation requirement( refer to
0 O/ }- U, s7 LIEC60335-1 22.42), whether shall be at least add 2 Y capacitors between/ x( ^* Q; z- o2 l' H
the primary and the secondary of the transformer ?
$ z* P! l+ |! `9 ]- ?% I+ p) I2 A. ~* Q- {+ B+ R, m! i
VDE: if there are any capacitors connect between the primary and the) b& @- C# D) ?* Y/ a1 g; v" i
secondary of the transformer, it shall be- U5 p8 {/ [7 u2 m4 `2 A
- Y2 (basic insulation, at primary)+ Y1 (supplementary insulation, as
# z7 A2 P" m" Q; ^ Psecondary); or
3 c8 s" ~" F) A5 i- 2 x Y1 capacitors
# L) l4 ]8 H, U6 _$ i8 V8 ?( _5 ]7 W4 X7 P& R
If no any Y capacitors between the primary and the secondary of the" I# {2 y$ Z) f8 {) l
transformer, whether it will affect the reinforced insulation ?
4 E- e' |6 Q }* m
) o3 u% i( J) `4 b0 XVDE: no capacitor is accepted.& R, p4 \( H/ c" ^ k
But please be reminded that in any case the requirement of clearance and; I! `+ I. U8 k' {$ e0 t: r
creepage shall be fulfilled. |
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