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给你一点资料参考一下.
1 O s: ~& e+ n" m+ g8 X" M JClause: 2.2.2 Voltage under Normal Conditions Test
* X9 c) I2 L+ i& i6 P: o" QApplicable apparatus: Applicable with SELV circuit1 N5 k' r. C, h! C1 \
Operation:
) L& K+ i* w* Z4 x' O1. 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.+ i. b6 p( B( L5 w' y3 C' f; q5 V
2.Each single SELV circuit or interconnected SELV circuits are measured2 R9 m* b& P' r# \! U+ v, o
Criteria:The measured voltage shall not exceed 42.4 V peak or 60 V d.c.
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- n* B* K" m1 ^! {4 yClause: 2.2.3 Voltage under fault Conditions Test' x: X# V1 B6 f1 @
Applicable apparatus: Applicable with SELV circuit
* T2 R& m" t5 o% }Operation:
4 e j3 j6 [. p N5 ?5 Y1.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.3 i p" R+ W& r9 }$ n$ }9 ?
2.Each single SELV circuit or interconnected SELV circuits are measured.1 a, q8 ~2 o+ l4 _& ^ B" N% j
3.A single failure of basic insulation or supplementary insulation or of a component failure is simulated one at a time.
8 h( {! x T! `7 D$ h4.Voltages at the SELV circuits are measured by storage oscilloscope. 2 J7 {3 \+ U* x! T! S" J* i
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. 8 ^( y, r' y5 D
Criteria:0 o/ ?* ~' c5 ^1 R! H
1.The measured max. voltage shall not exceed 71 V peak or 120 V d.c., and9 m4 H* n9 k# |$ C
2.The duration where exceed 42.4 V peak or 60 V d.c shall less than 0.2 s, and
1 o' U4 M9 S" ]/ s6 i5 w3.if t1<= 20 ms, t2 shall > 1 s, if t1 > 20 ms, t2 shall > 3 s |
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