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请参考IEC 60950-1 clause 1.5.6:+ V/ [( l9 w t2 X* X) P; Q. V
A capacitor connected between two line conductors in a PRIMARY CIRCUIT, or between one line) v+ q( ]9 N1 |/ B
conductor and the neutral conductor or between the PRIMARY CIRCUIT and protective earth- @( \" r. M$ `4 N- v7 x
shall comply with one of the subclasses of IEC 60384-14 and shall be used in accordance
# [: m: Q0 Y" F2 I/ J; ~( Ewith its rating. This requirement also applies to a capacitor bridging DOUBLE INSULATION or
. x3 s% _9 v" O7 O) @REINFORCED INSULATION elsewhere in the equipment. The details of the damp heat, steady2 a. z) r! d$ E, g
state test as specified in 4.12 of IEC 60384-14 shall be as follows:: J# U9 y+ A x$ ^; [* X( F& l
− Temperature: 40 °C ± 2 °C;
8 @( r* ^ G; @7 j- w1 C− Humidity: 93 % ± 3 % relative humidity;
3 h7 |2 N6 E1 |5 V/ r− Test duration: 21 days.
7 T8 _7 M$ M2 p# Y3 \NOTE 1 Capacitors that have been subjected to a test duration longer than 21 days are considered to have met
* N% l; m) Z jthe test duration criteria.0 r6 o& k3 \. C- }
The above requirement does not apply to a capacitor connected between a HAZARDOUS
9 m8 z% N M* `" B0 B CVOLTAGE SECONDARY CIRCUIT and protective earth, where only BASIC INSULATION is required.: R# ?" ]1 E3 @) b) s L
NOTE 2 The test of 5.2.2 still applies between the HAZARDOUS VOLTAGE SECONDARY CIRCUIT and protective earth.2 r- n0 }) M2 Q! Y' r) v% d7 l
The appropriate capacitor subclass shall be selected from those listed in Table 1C, according7 c- X, E; ^7 g& n/ y' t# `
to the rules of application in the table.: k x2 L; ?1 ~4 a2 j; \) 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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