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请参考IEC 60950-1 clause 1.5.6:
" n M9 x' K3 X* d' ]+ G7 X8 B' zA capacitor connected between two line conductors in a PRIMARY CIRCUIT, or between one line5 H1 T1 P+ F, B3 T
conductor and the neutral conductor or between the PRIMARY CIRCUIT and protective earth
8 Q. _9 R! @2 U8 B3 Bshall comply with one of the subclasses of IEC 60384-14 and shall be used in accordance) ?! E C+ D0 i* ~6 y
with its rating. This requirement also applies to a capacitor bridging DOUBLE INSULATION or* _# D/ ^0 H! f6 S/ ^8 Q" G. F1 K0 o
REINFORCED INSULATION elsewhere in the equipment. The details of the damp heat, steady! a2 Z! ~5 ?2 l/ P% q
state test as specified in 4.12 of IEC 60384-14 shall be as follows:
: l- s3 p8 h1 y5 j5 w− Temperature: 40 °C ± 2 °C;
' |% V0 X4 i, |− Humidity: 93 % ± 3 % relative humidity;& a) A7 C. ^7 X& E
− Test duration: 21 days.
[. `2 e8 e) BNOTE 1 Capacitors that have been subjected to a test duration longer than 21 days are considered to have met: f# U. }6 I, p
the test duration criteria.
- M% I2 Y x; J/ J2 W7 WThe above requirement does not apply to a capacitor connected between a HAZARDOUS/ t5 ~7 v9 k6 \
VOLTAGE SECONDARY CIRCUIT and protective earth, where only BASIC INSULATION is required.
! w! O2 v$ p kNOTE 2 The test of 5.2.2 still applies between the HAZARDOUS VOLTAGE SECONDARY CIRCUIT and protective earth.
0 D; U+ K Z" } A ]/ g: fThe appropriate capacitor subclass shall be selected from those listed in Table 1C, according/ B7 B6 H V5 w3 p- v* X8 f3 |4 Z
to the rules of application in the table.3 c0 H) K. Y7 z; Q5 h" E
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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