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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:
! L$ p, h+ N; g% j! z6 V! \In order to meets the reinforced insulation requirement( refer to3 ]( p) ]; B) E: I
IEC60335-1 22.42), whether shall be at least add 2 Y capacitors between& M7 K9 l' V! ]% ?9 x/ G
the primary and the secondary of the transformer ?, L0 l" w; p O
# Z2 N* E+ L4 K+ e: _0 ]
VDE: if there are any capacitors connect between the primary and the/ o( A4 u( k4 K, {! \
secondary of the transformer, it shall be
, M6 b0 E' j# x7 Q& v7 {/ Y- Y2 (basic insulation, at primary)+ Y1 (supplementary insulation, as
9 ^% m J$ v1 E+ ~: K' Esecondary); or
- R8 b, e, g' h+ c3 j( ~: Q& x- 2 x Y1 capacitors A9 w1 e" \$ N6 H' z8 {
0 H" ^- J7 r0 L( z2 f1 e* q) c8 m6 IIf no any Y capacitors between the primary and the secondary of the
* J& ]4 ]' q* Btransformer, whether it will affect the reinforced insulation ?
' s, \6 Q3 g% Y. A& Z& N* K4 `0 ^, H- B7 x- G2 m$ K
VDE: no capacitor is accepted." P3 q! [9 J( A
But please be reminded that in any case the requirement of clearance and7 j- M0 e, ^7 u
creepage shall be fulfilled. |
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