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请参考IEC 60950-1 clause 1.5.6:& G2 ?2 X3 M! N8 O# o
A capacitor connected between two line conductors in a PRIMARY CIRCUIT, or between one line
& A8 s, E t+ Cconductor and the neutral conductor or between the PRIMARY CIRCUIT and protective earth$ ~# ?! Q2 R' n0 ?0 X
shall comply with one of the subclasses of IEC 60384-14 and shall be used in accordance
8 ~5 t9 E9 B6 Y* }4 o- c5 M' Ewith its rating. This requirement also applies to a capacitor bridging DOUBLE INSULATION or0 q1 `# y, Y+ t4 ^; O+ t
REINFORCED INSULATION elsewhere in the equipment. The details of the damp heat, steady! M6 `, {) g" N3 o3 N0 u
state test as specified in 4.12 of IEC 60384-14 shall be as follows:
, }1 f- u! S7 E: {6 l- \− Temperature: 40 °C ± 2 °C;
. _1 S+ | ^6 t- L4 N. q, Z d− Humidity: 93 % ± 3 % relative humidity;
2 R ~ @- `. G! s' C− Test duration: 21 days.
3 ~+ Z4 E1 n% ~4 G9 } M0 yNOTE 1 Capacitors that have been subjected to a test duration longer than 21 days are considered to have met
+ m- W; i! a* }7 g% athe test duration criteria.& I: |0 c' }/ V9 e# j3 k. O7 C1 T
The above requirement does not apply to a capacitor connected between a HAZARDOUS2 o- J+ K8 A' o& @& ]3 K T2 r4 p
VOLTAGE SECONDARY CIRCUIT and protective earth, where only BASIC INSULATION is required./ Y9 R2 H! }3 v$ ^- p! e+ `
NOTE 2 The test of 5.2.2 still applies between the HAZARDOUS VOLTAGE SECONDARY CIRCUIT and protective earth.7 L: E% p* v# i2 V! l3 b5 t
The appropriate capacitor subclass shall be selected from those listed in Table 1C, according( Y* v& x7 T7 s* F: P
to the rules of application in the table.
3 z+ [) `+ @4 b1 c4 [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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