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请教高手
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2 E& A0 ^4 S( r- G( G5 tIEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。
" W/ L. s4 T: l7 s" B6 {现有:
1 z2 T9 Y9 C/ x) hCY1电容器跨接在初次级上,满足加强绝缘距离要求。+ G" A3 @" w n3 ?) S5 [5 x
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认证公司要求:
4 K. d8 S# n) J* P# m: P9 n+ r1. CY1电容耐压值应该更换为500V
+ A1 R% y X$ u4 l# \% O3 o) ?2. 或者采用两个CY2串联
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" `) G% o. G$ v" f& X5 g目的:因为EN61010-1标准要求CY1必须要有2倍工作电压的耐压值
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1. 我想知道他们所说的耐压值什么意思?2 o& T( F+ T6 z6 ^6 D
' v% T! o. _) q2. IEC/EN61010-1:2010 是说的这个意思?
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6 H# h4 s/ ]; ?5 r. w1 t下文为标准:; @3 z: X% U; F R
6.5.4 PROTECTIVE IMPEDANCE
5 b% n% D6 }' A3 D1 JA PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL
. M" d9 Q ~* ~+ mCONDITION and 6.3.2 in SINGLE FAULT CONDITION.
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Insulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements
6 o' F- H; l( e. [3 ^1 fof 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.6 h- j+ U* F- [1 G
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A PROTECTIVE IMPEDANCE shall be one or more of the following:9 O8 l- y) h# b% ^4 l
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a) an appropriate single component which shall be constructed, selected and tested so that safety and reliability for protection against electric shock is assured. In particular, the component shall be:$ o6 T2 u& t9 E
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1) RATED for twice the maximum WORKING VOLTAGE;
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# R9 T1 x5 Q& j3 B2 E5 ]2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.
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b) a combination of components.& D. |# t' x6 B& Z; D
A PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron9 Y' i3 @5 A1 d# D
conduction in a vacuum, gas or semiconductor) h6 l+ \" b2 M. m: h+ a
Conformity is checked by inspection, by measuring the current or voltage to confirm that they. z w- L+ d4 g" ]2 h* F. C
do not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE
" r# m# @- p- p4 m) TDISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of
2 h. m# ~& J1 u4 i7 j cits RATINGS. |
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