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IEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。 F% G' \1 Z2 d" c' d. E
现有：7 _! |2 k5 l7 r# h8 r
CY1电容器跨接在初次级上，满足加强绝缘距离要求。3 X; w- Q! }8 z, G7 O/ L8 @
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认证公司要求：; i# i( k$ b+ {
1. CY1电容耐压值应该更换为500V+ }8 B. E' `+ ?; t
2. 或者采用两个CY2串联
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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
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8 t% k: f n( |3 i) S1. 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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下文为标准：; G1 n2 P* p" \$ ^( m5 z& B
6.5.4 PROTECTIVE IMPEDANCE
5 l* C: Q9 v. d0 i2 o) u: X5 q/ n/ [A PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL1 @9 f8 y& r) M- }7 x+ T* O$ s
CONDITION and 6.3.2 in SINGLE FAULT CONDITION./ _6 q6 H0 ?4 k" ~$ U7 K* N
/ [+ F# Q2 A! O5 U- [. _, J% oInsulation between the terminations of the PROTECTIVE IMPEDANCE shall meet the requirements0 Z5 y, i) N5 E9 S" |$ q9 m
of 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.
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B7 }' \: l; S4 R1 P! xA PROTECTIVE IMPEDANCE shall be one or more of the following:2 B5 g+ X8 |4 N7 X
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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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* l# r+ C" |% o1) RATED for twice the maximum WORKING VOLTAGE;" Y8 m' m5 F6 {, b
. P9 X7 g' o. v2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.
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0 ?0 N% T* {8 _- I3 Q" [b) a combination of components.' Q. L( i6 Y7 J6 Z5 u
A PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron" T7 S6 ~2 e2 ~% c6 i, a
conduction in a vacuum, gas or semiconductor
8 t* |% G0 u) R. R k6 dConformity is checked by inspection, by measuring the current or voltage to confirm that they
) J6 G3 R" q9 k Rdo not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE
" n6 L1 z/ i5 r \% E* G5 i0 CDISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of0 S2 y/ m- |' x
its RATINGS. |
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发表于 2011-11-16 10:23
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