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请教高手
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4 Y9 l# H3 z2 n8 n! f$ Q- XIEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。/ e% v. f* u5 L- @3 _! h8 L
现有:
. j3 Q: H- \% r2 v3 D, n$ [CY1电容器跨接在初次级上,满足加强绝缘距离要求。+ F* g. |. }/ R6 b. M7 O7 z/ X
- V! h! @" \+ S$ \认证公司要求:
7 e" L/ R! Y l. }; _/ ]1. CY1电容耐压值应该更换为500V3 L8 t8 k; m! ?$ y) G
2. 或者采用两个CY2串联: S6 ?' {: I+ m% X3 [3 t6 y
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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 {- U+ q, s' @, H/ Y1 b, u
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1. 我想知道他们所说的耐压值什么意思?: I9 s3 W; K l. n4 j) g2 E
, e2 g0 L2 k- ]. o4 S" _! \2. IEC/EN61010-1:2010 是说的这个意思?& A/ u- d0 w& A
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下文为标准:
% m7 E& L6 V: N% K; V' s# O6.5.4 PROTECTIVE IMPEDANCE( d! p1 f4 D4 S: Z' W9 O
A PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL
5 v, \+ Y1 t/ y. h1 `/ M8 }CONDITION and 6.3.2 in SINGLE FAULT CONDITION.$ N4 ]# ^) ~- |( g7 {
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Insulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements& V; |" b+ g5 d# ] j# b: s8 D: P
of 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.
/ B) [$ B! G' A. z1 i
7 z* @. v$ A6 }' k6 G. CA PROTECTIVE IMPEDANCE shall be one or more of the following:
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* j; p4 T% h1 w2 Z5 o6 ]2 p5 A& [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:
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1) RATED for twice the maximum WORKING VOLTAGE;* `& A( [1 P& a4 {+ j7 _
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2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.
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- [# D6 I2 T8 L' P: P0 U$ K' t) Ob) a combination of components.7 O' e2 w i- w5 P0 e2 @
A PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron
( D7 e6 y5 |- }8 @conduction in a vacuum, gas or semiconductor: c3 Z4 R3 E6 L3 o7 K6 K9 ? U
Conformity is checked by inspection, by measuring the current or voltage to confirm that they
) ^" F3 W3 u6 P/ Ado not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE
, ?+ l& y% C8 b5 ? F. ?' z3 A6 hDISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of/ @+ P4 T) I$ N
its RATINGS. |
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