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diler 发表于 2014-6-16 10:14 
! J! c& q# `0 J5 v, g能说一下具体是哪条有提到吗,一直没发现有类似的内容,谢谢! ; w5 X+ s, D- O- {
EN 61000-4-5:20067 z" ]' M4 v+ v# E* S- a3 y
8.2 Application of the surge in the laboratory- I9 v/ N" C5 v! F/ y o
– test level (voltage) (refer to Annex A);
, ]& h4 q6 H) u; g6 R' M* T& p– number of surges:
; g+ U M4 U. V5 c# e( tnumber of surge pulses unless otherwise specified by the relevant product standard:! I# I0 t: U9 h" } A) S4 [( s
- for d.c. power ports and interconnection lines five positive and five negative surge' k N6 {$ o2 d0 P
pulses;: @9 |( N; l, G/ M. Y- P7 Z5 E
- for a.c. power ports five positive and five negative pulses each at 0º, 90º, 180º and at
9 E9 s% p$ K7 V: B" D. y9 T270º;
3 N% O$ z; J1 m5 J% P, w2 u7 p& q– time between successive pulses: 1 min or less;! x- h* J1 e) ^! s2 l' u
– representative operating conditions of the EUT;+ ^: k, f* P: n) T4 R% G
– locations to which the surges are applied. |
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