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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:; [. x- W% m( g' F, L7 }; U
In order to meets the reinforced insulation requirement( refer to* g5 D4 B2 O' y2 |
IEC60335-1 22.42), whether shall be at least add 2 Y capacitors between; z% m" W1 P! |9 T4 [
the primary and the secondary of the transformer ?/ }3 W* ]% ?2 s( ?' a
+ c3 L1 Q7 ?- d4 w6 c/ ?/ [
VDE: if there are any capacitors connect between the primary and the( S; }+ ?3 D) ?% u' F' M8 i
secondary of the transformer, it shall be
4 ]. q: f& P6 s5 X& B- Y2 (basic insulation, at primary)+ Y1 (supplementary insulation, as
. Z% W$ {0 t1 d6 q1 T2 Ksecondary); or- J4 j* h3 P" B2 I }- ~
- 2 x Y1 capacitors( T, e: h: k+ I& N( w. L
0 Q& V( l x' r5 Y
If no any Y capacitors between the primary and the secondary of the
: N+ v% v q: F6 F# |transformer, whether it will affect the reinforced insulation ?3 i8 b8 w7 t: }% R F$ T1 N
, n& v0 w: [- B. @. j& xVDE: no capacitor is accepted.
' h Y+ I( \5 TBut please be reminded that in any case the requirement of clearance and
# z1 g# q% c3 Q$ Rcreepage shall be fulfilled. |
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