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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. l& F. c( F( p4 p# Y2 y4 }In order to meets the reinforced insulation requirement( refer to
; I; |; l8 ~- \IEC60335-1 22.42), whether shall be at least add 2 Y capacitors between
3 b, n; R, N. O3 d( D0 fthe primary and the secondary of the transformer ?7 y: a0 U' {: S9 D' y
6 {' e" S0 z" S$ LVDE: if there are any capacitors connect between the primary and the
+ |. u i, e7 |secondary of the transformer, it shall be1 G! d$ r( y/ I# F+ a* k" n+ W
- Y2 (basic insulation, at primary)+ Y1 (supplementary insulation, as
, l" [" e' u7 P* c# \' v( S* nsecondary); or
: c$ }' r+ T ]4 l; j- 2 x Y1 capacitors8 x g/ F" E d- G$ Z
7 R q9 b G% o/ z8 w4 M" |
If no any Y capacitors between the primary and the secondary of the
- \# k6 R1 ~- d$ T. t {transformer, whether it will affect the reinforced insulation ?
9 }3 j5 F0 |" q0 `5 {
4 H2 \$ b; c1 p; \+ S4 FVDE: no capacitor is accepted.! x; e: `9 b# ?9 q* O! G a/ S P& [$ y
But please be reminded that in any case the requirement of clearance and4 ]! u: g. u1 R! e! R) g3 Z* s+ ?
creepage shall be fulfilled. |
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