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请教高手
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IEC/EN61010-1:2010 对跨接初级与次级Y电容有什么要求。
. z M; x& Q* P5 i# O3 e4 i/ N现有:
: H8 f% [2 M' s3 n; d/ ^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:
6 o& M1 p' E9 N1. CY1电容耐压值应该更换为500V( F% c5 ^ u- i4 R8 A" T3 X
2. 或者采用两个CY2串联
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1 p1 y' j8 C1 w2 u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?
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2. IEC/EN61010-1:2010 是说的这个意思?" a9 c3 ~, B! H; i' z ~1 M
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下文为标准:7 u! r3 W. d {
6.5.4 PROTECTIVE IMPEDANCE
; Z0 `& h+ @# H6 p" U' x$ ZA PROTECTIVE IMPEDANCE shall limit the current or voltage to the levels of 6.3.1 in NORMAL5 ^+ }8 j9 Z8 N0 a# v( n; g* i+ U: T
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
( n$ ~- @- |) K( Q4 t/ jof 6.7 for DOUBLE INSULATION or REINFORCED INSULATION.
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5 r, W$ d2 i4 a/ k3 j4 S5 ], WA PROTECTIVE IMPEDANCE shall be one or more of the following:/ s8 b/ i1 w3 Z
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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:7 q f8 u3 S B" S
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1) RATED for twice the maximum WORKING VOLTAGE;' L- ^0 b( M4 [2 n" m
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2) if a resistor, RATED for twice the power dissipation for the maximum WORKING VOLTAGE.+ ?. \2 X5 r) o2 H. O0 n
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b) a combination of components.2 _ N6 t8 a0 H) a: a
A PROTECTIVE IMPEDANCE shall not be a single electronic device that employs electron
8 u' e) I4 U. u! R8 Z4 Bconduction in a vacuum, gas or semiconductor
( j* a; f8 O) f( [& N% \) GConformity is checked by inspection, by measuring the current or voltage to confirm that they
4 i4 D1 D- u z' }" Sdo not exceed the applicable levels of 6.3 and by measuring CLEARANCES and CREEPAGE* K0 O5 w# q d0 M7 W
DISTANCES as specified in 6.7. Conformity of a single component is checked by inspection of
I5 }/ f4 }, w" X' i3 n: V% wits RATINGS. |
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