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请参考IEC60950-1 Annex Q中描述如下:
$ u7 V& Y- b! cA VDR used in a PRIMARY CIRCUIT shall comply with IEC 61051-2, with the following details.
* ?' U, N2 n) Q4 i; o7 _3 c# wa) Preferred climatic categories (2.1.1 of IEC 61051-2)
* ^" [- Y! `/ B( J3 s: fLower category temperature: - 10 °C
- U7 ]& R" m# `8 gUpper category temperature: + 85 °C
0 o' u4 c0 s0 ?; pDuration of damp heat, steady state test: 21 days
\( R2 S7 X0 g9 _+ a* A% Tb) Maximum continuous voltage (2.1.2 of IEC 61051-2)
% Q2 F, P/ B2 `7 M& pThe maximum continuous a.c. voltage is selected from the list of preferred voltages and1 V5 t0 v0 F- p
shall be at least 120 % of6 {! J( q# R- k" Z
− the RATED VOLTAGE of the equipment or& O* w0 @; ?5 M
− the upper voltage of the RATED VOLTAGE RANGE of the equipment.) ]/ W" _! W1 a: j$ K
c) Pulse current (Table I group 1 of IEC 61051-2)6 A( q3 l8 R2 {2 w. w0 ?" G- ^) B
Combination pulses of 6 kV/3 kA of alternating polarity are used, having a pulse shape of; Q# d* ? z: o- }9 Z+ U) M9 q
1,2/50 μs for voltage and 8/20 μs for current.
: G7 z' e4 V0 `In addition to the performance requirements of Table I group 1, the clamping voltage after the
' ~- _* \' \/ G# Xtest shall not have changed by more than 10 % when measured with the manufacturer's
' ]4 W$ z5 f3 j: H5 [; _specified current. |
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