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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:, t" w2 X) }. G
In order to meets the reinforced insulation requirement( refer to! N0 a q+ G+ b
IEC60335-1 22.42), whether shall be at least add 2 Y capacitors between+ D, L4 g' v% D# C) ^
the primary and the secondary of the transformer ?) f9 o* d: K) Z* d. @9 |) @" p0 ]
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VDE: if there are any capacitors connect between the primary and the0 q8 h+ C' Y$ x
secondary of the transformer, it shall be& k9 D N, I9 Z+ J; k
- Y2 (basic insulation, at primary)+ Y1 (supplementary insulation, as7 b0 ?4 n; P6 @- g( E
secondary); or
; Q$ M9 `: P3 U- 2 x Y1 capacitors
5 h' o: Q8 U, ]8 s* \/ Z; e1 P2 {/ x
If no any Y capacitors between the primary and the secondary of the9 q. r' _7 j3 l6 F
transformer, whether it will affect the reinforced insulation ?3 O! V4 V8 K/ Z- s; R, [ M0 W) y
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VDE: no capacitor is accepted.
+ e3 L2 O8 R* dBut please be reminded that in any case the requirement of clearance and
6 D5 M' ]3 T$ Z1 @% I7 [9 X! fcreepage shall be fulfilled. |
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