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给你一点资料参考一下.
9 \5 _" o9 S4 U" VClause: 2.2.2 Voltage under Normal Conditions Test/ s$ p# U& A; z0 t" z h* \
Applicable apparatus: Applicable with SELV circuit% U' c3 {" S8 {$ M# G" P
Operation:
, j. \. q }9 l, B0 k1. EUT: (1) AC mains: U=1.06 / 1.1 Un, F=Fn; (2) DC mains: U=1.2 Un (if the tolerance is declared by client, to conduct by the client’s maximum declared value). Both under any load conditions which can generate maximum output voltage.( V7 Z1 ~8 l: g5 I
2.Each single SELV circuit or interconnected SELV circuits are measured
! I2 I% o: B% O& U5 uCriteria:The measured voltage shall not exceed 42.4 V peak or 60 V d.c., @7 r1 E5 x% B7 f
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2 q: |* ]) K1 z" EClause: 2.2.3 Voltage under fault Conditions Test0 {0 L1 {) _; N3 g9 [4 L
Applicable apparatus: Applicable with SELV circuit# ^' M K: u5 z1 U+ k8 ~
Operation:* f" F1 i/ Q+ Z! e1 _! f
1.EUT: (1) AC mains: U=1.06 / 1.1 Un, F=Fn; (2) DC mains: U=1.2 Un (if the tolerance is declared by client, to conduct by the client’s maximum declared value). Both under any load conditions which can generate maximum output voltage.
6 g- z( K! w- f! k. O" K# X) K2.Each single SELV circuit or interconnected SELV circuits are measured.
. |1 T! x( e5 ~9 |1 N/ ?' m- p3.A single failure of basic insulation or supplementary insulation or of a component failure is simulated one at a time.
2 F7 C# X# d; `1 e$ a. S% N4.Voltages at the SELV circuits are measured by storage oscilloscope. 7 K1 d! { `3 j+ n7 Q+ ?
5.For voltage having repetitive nature after a fault, the highest voltage, duration exceed (t1) and not exceed (t2) 42.4 V peak or 60 V d.c. shall be recorded.
/ W" Z/ q* y n/ p5 b7 XCriteria:
) V2 S$ l W. g) t1.The measured max. voltage shall not exceed 71 V peak or 120 V d.c., and
: v5 a ], K0 Y+ O' P2.The duration where exceed 42.4 V peak or 60 V d.c shall less than 0.2 s, and 0 H. e) h: X9 l2 ^' k
3.if t1<= 20 ms, t2 shall > 1 s, if t1 > 20 ms, t2 shall > 3 s |
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