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请参考IEC 60950-1 clause 1.5.6:! A; Q, N7 v. [! ^5 R" l" v
A capacitor connected between two line conductors in a PRIMARY CIRCUIT, or between one line
K8 r0 O+ d2 ~5 y" P" J% V/ z8 k6 vconductor and the neutral conductor or between the PRIMARY CIRCUIT and protective earth
: t: v8 d: A: C1 hshall comply with one of the subclasses of IEC 60384-14 and shall be used in accordance$ W" z0 X# z0 u
with its rating. This requirement also applies to a capacitor bridging DOUBLE INSULATION or: E! e* H+ i) g4 _& N
REINFORCED INSULATION elsewhere in the equipment. The details of the damp heat, steady
% `5 I! Q6 w! y% v1 f' Wstate test as specified in 4.12 of IEC 60384-14 shall be as follows:9 _ {& H9 F8 ^, S* B1 o& X
− Temperature: 40 °C ± 2 °C;
! J% c- N: ]5 i* y− Humidity: 93 % ± 3 % relative humidity;5 `- x( o1 A4 f; }+ C4 K& Z
− Test duration: 21 days.) V5 G$ c4 s8 w$ H( O, O
NOTE 1 Capacitors that have been subjected to a test duration longer than 21 days are considered to have met
- {6 x8 b: n8 T: B: x. C5 A& Kthe test duration criteria.
, Z, g6 w1 ^+ S' PThe above requirement does not apply to a capacitor connected between a HAZARDOUS
2 _; i/ @ y; e- k" @1 nVOLTAGE SECONDARY CIRCUIT and protective earth, where only BASIC INSULATION is required.+ g6 {5 W9 _, M0 k1 i& H
NOTE 2 The test of 5.2.2 still applies between the HAZARDOUS VOLTAGE SECONDARY CIRCUIT and protective earth.
7 \/ I9 E9 V h6 F( n* b" _# W* I" wThe appropriate capacitor subclass shall be selected from those listed in Table 1C, according# ~2 C) S# j w' H& Y1 p. c% X
to the rules of application in the table.
; x" x4 c" F. v表格不会贴，所以还是自己找60950的标准好好看一下 |
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发表于 2011-5-16 15:51
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