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请参考IEC 60950-1 clause 1.5.6:8 @! d9 j Z% |, X) k7 q7 x" U
A capacitor connected between two line conductors in a PRIMARY CIRCUIT, or between one line& G( _. @2 }5 m. K" g
conductor and the neutral conductor or between the PRIMARY CIRCUIT and protective earth( m. d5 g ~8 }2 g( k
shall comply with one of the subclasses of IEC 60384-14 and shall be used in accordance7 E( p0 I& T) L+ }' @6 u$ S ~
with its rating. This requirement also applies to a capacitor bridging DOUBLE INSULATION or3 U0 Z) v. z: H3 r/ O# x: }: F
REINFORCED INSULATION elsewhere in the equipment. The details of the damp heat, steady
% D0 ]. R; _1 j9 t6 d9 J+ E9 X/ x8 i5 Astate test as specified in 4.12 of IEC 60384-14 shall be as follows:
6 H. e" ]- ~- @4 ?− Temperature: 40 °C ± 2 °C;
3 ]& S; t4 A- H4 _ |− Humidity: 93 % ± 3 % relative humidity;- a, q+ W* }8 ^0 A
− Test duration: 21 days.
% ]7 v$ q# q: z4 FNOTE 1 Capacitors that have been subjected to a test duration longer than 21 days are considered to have met
2 Q6 T' k0 W6 b6 p J( }* c" ^the test duration criteria.
, O0 l- p- B$ x" BThe above requirement does not apply to a capacitor connected between a HAZARDOUS
3 Y6 H' l7 C5 ] m# VVOLTAGE SECONDARY CIRCUIT and protective earth, where only BASIC INSULATION is required.4 @. P4 r4 Q a$ r
NOTE 2 The test of 5.2.2 still applies between the HAZARDOUS VOLTAGE SECONDARY CIRCUIT and protective earth.# N& O' d# Z1 h; a Z/ [) i9 B
The appropriate capacitor subclass shall be selected from those listed in Table 1C, according1 C- b9 b# ?. c/ [+ h
to the rules of application in the table.
2 F& a2 \8 ]% h( G9 P2 }" U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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