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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。。” C7 y& v1 ~7 D6 V% w
* k5 o8 P( H( P5 y61347-1 IEC:20007 v9 @- G3 q* q. H3 y
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12 Electric strength
8 A0 Z9 p# I9 x! S" eLamp controlgear shall have adequate electric strength.
5 b0 J+ g- i& w. zImmediately after the measurement of the insulation resistance, the lamp controlgear shall
' L0 [) X1 ^/ U& H6 N Dwithstand an electric strength test for 1 min applied between the parts specified in clause 11.
) X, Q3 a& q7 x" d$ i G& N* iThe test voltage of substantially sine-wave form, having a frequency of 50 Hz or 60 Hz shall4 o% W6 j( s5 g' W+ f0 N
correspond to the values in table 1. Initially, not more than half the specified voltage shall be
. z6 O" U: @9 F" w- i0 [, K' t! Rapplied, the voltage then being raised rapidly to the prescribed value.
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Table 1 – Electric strength test voltage
1 U/ f3 N# |1 `+ J! X; n* O; gWorking voltage U Test voltageV% @- ]5 m+ j( x8 W( n
Up to and including 42 V 500
9 Z8 L% B# @0 f+ }) xAbove 42 V up to and including 1 000 V 2 U + 1 000
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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.
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* g# |% Z" m4 X" c4 o3 nNo flashover or breakdown shall occur during the test.
$ f! @9 \% Y; a$ VThe high-voltage transformer used for the test shall be so designed that when the output
8 Z" }3 {! F: l7 w5 m3 lterminals are short-circuited after the output voltage has been adjusted to the appropriate test2 P& ]1 d4 N/ T# g: }- E! T
voltage, the output current is at least 200 mA.$ \3 e& e6 Y) v8 O: a
The overcurrent relay shall not trip when the output current is less than 100 mA.
! i- @. k# ~2 C% j' @; c# yThe r.m.s. value of the test voltage applied shall be measured to within ±3 %.* `5 L/ H, x2 Q+ K
The metal foil referred to in clause 11 shall be placed so that no flashover occurs at the edges `" O, W8 z' |9 \1 p: S; g. b7 }
of the insulation.' z/ Y f& [* s) R
Glow discharges without drop in voltage are neglected. |
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