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“有可能的话,将IEC 61347关于打高压的那段贴上来瞧瞧。。”! {5 q( w5 G T, C" T! Z+ g$ V# E& L
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61347-1 IEC:2000
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12 Electric strength; I7 h7 k# P( ]" }
Lamp controlgear shall have adequate electric strength.' _& h3 j7 |# H6 {& \% T6 W( f9 K
Immediately after the measurement of the insulation resistance, the lamp controlgear shall3 a, F8 |) c( Z# Z3 u% R
withstand an electric strength test for 1 min applied between the parts specified in clause 11.
4 l2 j9 K5 O, ?4 @The test voltage of substantially sine-wave form, having a frequency of 50 Hz or 60 Hz shall
. D( A# J: Y1 o& j s3 }8 N6 p$ Zcorrespond to the values in table 1. Initially, not more than half the specified voltage shall be: Z- X; D% g% u* y$ E0 g7 c
applied, the voltage then being raised rapidly to the prescribed value.
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Table 1 – Electric strength test voltage. ^; b1 }8 o! d9 J5 S
Working voltage U Test voltageV
: s8 ?& L; W+ E# h- o5 m! ]; fUp to and including 42 V 500
! [, Q6 M! x% h. }2 {4 fAbove 42 V up to and including 1 000 V 2 U + 1 000! X3 U& e/ p6 \: H" j! c6 u
, q5 b1 A* M' {NOTE For convertors, the electric strength test between parts separated by reinforced insulation shall be in accordance with figure 9, curve B, of IEC 60065.! C* x# M/ t: p) g r
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No flashover or breakdown shall occur during the test.2 w+ }- n6 j# S7 [
The high-voltage transformer used for the test shall be so designed that when the output
2 |/ G0 [' R" L! v: _terminals are short-circuited after the output voltage has been adjusted to the appropriate test9 p L2 s0 K" x. S T8 D
voltage, the output current is at least 200 mA.# d# _9 `# P9 f. v7 t
The overcurrent relay shall not trip when the output current is less than 100 mA.2 y2 p7 k+ p3 G* G: ~* J
The r.m.s. value of the test voltage applied shall be measured to within ±3 %.' T# O6 ^3 I9 c* D) m, q& ?, I
The metal foil referred to in clause 11 shall be placed so that no flashover occurs at the edges' k+ t3 ?) n {# t ]/ u k
of the insulation.7 C* A7 X+ R7 E6 j2 l5 }! G/ e3 _
Glow discharges without drop in voltage are neglected. |
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