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请参考IEC60950-1 Annex Q中描述如下:
( N+ L+ E5 \# U Z m, z/ JA VDR used in a PRIMARY CIRCUIT shall comply with IEC 61051-2, with the following details.
- t- @( [" t$ J Wa) Preferred climatic categories (2.1.1 of IEC 61051-2)
! z1 a/ c$ g/ D, s* s; rLower category temperature: - 10 °C4 \. E- c. p4 `5 C2 T+ s: I
Upper category temperature: + 85 °C. P& G2 s8 ^, P9 G9 y9 n
Duration of damp heat, steady state test: 21 days
1 E3 ^8 d7 O7 d& @0 Lb) Maximum continuous voltage (2.1.2 of IEC 61051-2)* T3 X4 M- s% B/ E0 {- w
The maximum continuous a.c. voltage is selected from the list of preferred voltages and5 T( s# U6 a% Q. X, i6 z# L+ J
shall be at least 120 % of2 I- U8 C/ g+ I3 h8 {( Y" ~7 H" r
− the RATED VOLTAGE of the equipment or. r7 ^. {. B. E. \" ?
− the upper voltage of the RATED VOLTAGE RANGE of the equipment.2 R0 p" ]1 v( Y# ~6 R# F8 u" [1 F
c) Pulse current (Table I group 1 of IEC 61051-2)
9 ^- c- S. D" P2 ~" a2 s) JCombination pulses of 6 kV/3 kA of alternating polarity are used, having a pulse shape of
( T- r5 f7 C( T3 ?" e1,2/50 μs for voltage and 8/20 μs for current.9 O. C: A& m. D; v
In addition to the performance requirements of Table I group 1, the clamping voltage after the
8 Q: l0 V) y6 q+ S% U. r1 ~, stest shall not have changed by more than 10 % when measured with the manufacturer's4 g1 D& B5 d* |9 ~5 w
specified current. |
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