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请教高手
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+ ]0 A1 D2 Y- eIEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。
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CY1电容器跨接在初次级上,满足加强绝缘距离要求。
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认证公司要求:
" M. G9 h# f& c1 b) ]1. CY1电容耐压值应该更换为500V( j/ b& c9 @/ I
2. 或者采用两个CY2串联0 s$ {0 h$ B* ~5 V# \
8 z. z# w5 o0 z+ f* ~; a$ L9 R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?+ b2 x5 X; v1 ~6 r6 ?. |7 L
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2. IEC/EN61010-1:2010 是说的这个意思?
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% @. H) H6 ` i- ~/ n# A5 V下文为标准:
$ ]& l k Y# M! \+ |4 a. K* }6 H6.5.4 PROTECTIVE IMPEDANCE/ n6 e/ [0 v3 i# a# `1 N2 A. `) g
A PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL g; Z, N+ x4 O: T- x0 a6 \/ y
CONDITION and 6.3.2 in SINGLE FAULT CONDITION.4 v: O4 E6 T. p E: p1 z
u" E8 k$ Z5 W2 q5 iInsulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements
2 t7 U/ W7 B# B) [3 m: Yof 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.. y, ^3 S* Y6 f" i. w
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A PROTECTIVE IMPEDANCE shall be one or more of the following:
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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:
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1) RATED for twice the maximum WORKING VOLTAGE;6 x/ I; T2 d3 V
! M7 `% \. V- K' a% p2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.% A. f9 e9 S- c: Y1 `2 J0 M3 i
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b) a combination of components.
/ F. [9 @: s; t$ \# zA PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron. u$ f+ `1 `' c* L! y
conduction in a vacuum, gas or semiconductor
- ]+ Q1 n. m2 P( a) OConformity is checked by inspection, by measuring the current or voltage to confirm that they& N% f2 j+ \ y5 m( R2 v0 P
do not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE3 V6 z8 B5 }& c8 t5 Q; E
DISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of
R) }/ O! X& P) sits RATINGS. |
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