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请教高手' E4 C# }7 p) f7 N1 n3 m
B# I6 {! N1 g, MIEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。5 S8 q) s1 a* ~1 G( b0 s. ?3 f
现有:- l0 ?; O9 g: V0 n1 M
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:
; L! Y( V8 Q& Y4 G/ L1 \( v, |5 r8 a1. CY1电容耐压值应该更换为500V) g& ?( N( E. R- L! g
2. 或者采用两个CY2串联3 M2 k2 W( w! _0 P& b
* G t/ k8 {9 H9 M/ ]& L- s6 {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$ D3 j" s5 s8 m. q; I, W3 I$ ^
2 c: i! l3 S. @- v$ Z: H1. 我想知道他们所说的耐压值什么意思?
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2. IEC/EN61010-1:2010 是说的这个意思?
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, M$ C& j7 z0 ~: a$ J下文为标准:
$ I9 k4 K$ l0 f5 Q6.5.4 PROTECTIVE IMPEDANCE: o5 x) m8 j2 N/ U" X7 F5 W
A PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL/ P1 l* x; z0 M
CONDITION and 6.3.2 in SINGLE FAULT CONDITION.
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Insulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements
7 \( R$ P, f- _. w5 r& t- o: Dof 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.
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A PROTECTIVE IMPEDANCE shall be one or more of the following:
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+ r! e; z k4 S. pa) 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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[" T2 L3 s/ t6 s1) RATED for twice the maximum WORKING VOLTAGE;0 J8 X9 U7 F) F E" G
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2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.
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: u$ |( B. H# D+ a0 ~, a. jb) a combination of components.
6 f0 C) |0 F- H/ E! v9 K2 kA PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron
1 h1 v4 q8 l4 c8 P9 d/ Q9 L2 `conduction in a vacuum, gas or semiconductor9 _9 M$ L; ?& ?0 P/ C- O
Conformity is checked by inspection, by measuring the current or voltage to confirm that they
3 |+ Y: v9 t2 E! c" V Hdo not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE0 I4 B) [ ^/ p5 T( R! y
DISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of
" n& m- j! O% _ |7 iits RATINGS. |
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