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请参考IEC 60950-1 clause 1.5.6:. T8 G* }% E; H! L2 v- Q0 m
A capacitor connected between two line conductors in a PRIMARY CIRCUIT, or between one line
; c4 W) s& f" k+ T# T! V) \9 ~# xconductor and the neutral conductor or between the PRIMARY CIRCUIT and protective earth5 d8 s8 y* ?7 ^1 M; h2 [3 C; N
shall comply with one of the subclasses of IEC 60384-14 and shall be used in accordance
. ^. U4 f$ A0 a) Cwith its rating. This requirement also applies to a capacitor bridging DOUBLE INSULATION or! `- \% m( N$ w0 G/ I; Y) D
REINFORCED INSULATION elsewhere in the equipment. The details of the damp heat, steady1 v8 Y0 o4 K2 p% V( ?% p+ F
state test as specified in 4.12 of IEC 60384-14 shall be as follows:: ^! t# v) b8 B7 o
− Temperature: 40 °C ± 2 °C;" W3 l* [* i+ \6 X
− Humidity: 93 % ± 3 % relative humidity;
# I: }/ _, S8 }) _; P3 m3 U9 M# G− Test duration: 21 days.# f( O) I5 g3 ?6 k0 w
NOTE 1 Capacitors that have been subjected to a test duration longer than 21 days are considered to have met e1 M5 ?( O R) V8 }! Q
the test duration criteria.+ d6 n1 Z C/ P" q5 h. E( i
The above requirement does not apply to a capacitor connected between a HAZARDOUS3 @9 z$ X! g( \) p$ I( ^3 S- u$ I
VOLTAGE SECONDARY CIRCUIT and protective earth, where only BASIC INSULATION is required.# s! x) T! w g
NOTE 2 The test of 5.2.2 still applies between the HAZARDOUS VOLTAGE SECONDARY CIRCUIT and protective earth.
+ J( J# }7 c" c a& ]% m" WThe appropriate capacitor subclass shall be selected from those listed in Table 1C, according. T0 v% R2 I2 x( i7 U' q" n9 c+ s
to the rules of application in the table.
2 D6 F$ T7 F# z( K7 K5 b5 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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