|
请教高手
. |, I: ?; w; Z8 l y9 \
* L, {, P7 r: U6 K1 ?IEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。 U8 ^: I- Y* J) _ }1 l
现有:
9 Q- i; b/ \- [$ [" A' u4 J% vCY1电容器跨接在初次级上,满足加强绝缘距离要求。# N; p; R4 V1 f5 }
" y1 J2 j5 q C4 c* \; }* L认证公司要求:
) K6 ?( D8 p& j# _) O% [1. CY1电容耐压值应该更换为500V4 m2 b( i( B7 O! Z* l
2. 或者采用两个CY2串联" q9 H# c& j' ?, ~$ z$ v
0 p0 d- |) \2 H1 T
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
- A7 s; R9 D9 ?8 }+ @$ S; H w8 A; W
9 x3 N* T1 \2 X; D5 J* N" N6 `1. 我想知道他们所说的耐压值什么意思? B" b3 }6 Q: G' o2 H2 L8 b9 D+ ?
7 X( \: O) J, b/ n
2. IEC/EN61010-1:2010 是说的这个意思?
f2 I" N2 o0 {' Z" ~
8 k1 ]* r! |; a* @: I8 y$ }% ]) s; ~下文为标准:3 O- _6 q+ j: a4 j
6.5.4 PROTECTIVE IMPEDANCE
; _) H- J: Y) _" ]5 sA PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL
* T' I6 _8 K+ |: q. {CONDITION and 6.3.2 in SINGLE FAULT CONDITION.# j. r$ z) S' F0 h. Z
* c' {0 \9 \6 f" h( I- w2 K) l
Insulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements. U8 p( L, h5 q4 x
of 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.* `. [ g ]/ A$ c/ r
* z, ]/ |! e: S9 t+ A
A PROTECTIVE IMPEDANCE shall be one or more of the following:
7 x* ?) v+ B1 @$ B% b1 ^7 v
; v% Y) \" B& A* T' Xa) 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:. ~7 l2 {: l3 S/ e7 H
, S7 d# G" o. o' N1) RATED for twice the maximum WORKING VOLTAGE;0 G- r: B6 D( V0 i7 V4 R
. h, O b- L0 C; o7 u- m2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.5 n/ x' _; h( X( M0 D3 o
! K6 y: v- l' `
b) a combination of components., V' c7 j& M4 |
A PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron
5 J% [6 r( F4 F0 n4 k" Iconduction in a vacuum, gas or semiconductor$ t. t4 \( U, J' {( n+ f6 }
Conformity is checked by inspection, by measuring the current or voltage to confirm that they0 Z6 o5 d! ~! g
do not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE3 u/ Z8 e1 ^3 U2 {" u/ p
DISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of- o/ o/ @) ^" |0 D' n5 c
its RATINGS. |
|