|
“有可能的话,将IEC 61347关于打高压的那段贴上来瞧瞧。。” n4 _) D+ F6 i: |
8 G1 L9 h, T$ c: g3 l61347-1 IEC:2000 b5 z. A4 k9 v
$ m' {* }7 ]# T12 Electric strength+ ~$ Z' P9 l! D9 r
Lamp controlgear shall have adequate electric strength.
( H& S" f6 T+ H. m* i+ iImmediately after the measurement of the insulation resistance, the lamp controlgear shall
- A( _& x: L. g' }7 _( L' D0 Lwithstand an electric strength test for 1 min applied between the parts specified in clause 11." }) |# j! S% z; K2 l. y
The test voltage of substantially sine-wave form, having a frequency of 50 Hz or 60 Hz shall5 P* s" i- e5 F
correspond to the values in table 1. Initially, not more than half the specified voltage shall be. w8 ]! w( x9 w3 \( M, q
applied, the voltage then being raised rapidly to the prescribed value.
6 @4 `9 G6 i3 r& O* |5 p) I- F# ?# @; u! j6 u
Table 1 – Electric strength test voltage' C. Q+ ?. x+ S, F, X, a' M& G
Working voltage U Test voltageV X7 d. T- B, \' \8 m9 g
Up to and including 42 V 5000 [9 R# J: s( U
Above 42 V up to and including 1 000 V 2 U + 1 0003 x$ m1 o: ~4 |0 Q( [/ n
' l+ C* V5 q( z# m/ U& ]" _8 p( b* ^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.
+ S; ~- @8 Z: r, O7 `7 Y
! h9 F, X5 o6 @' o) ` HNo flashover or breakdown shall occur during the test.
) ^9 L. u Q" a9 E) MThe high-voltage transformer used for the test shall be so designed that when the output
8 }# v; T/ k7 Z1 _- `- fterminals are short-circuited after the output voltage has been adjusted to the appropriate test* u! ~2 E0 V+ r' e4 M
voltage, the output current is at least 200 mA.$ n2 Z( X7 X. |0 m; Y7 N
The overcurrent relay shall not trip when the output current is less than 100 mA.
) G# u' z' c5 x% _/ b% D9 H8 eThe r.m.s. value of the test voltage applied shall be measured to within ±3 %.# l/ s9 a+ \5 b8 P6 v* t
The metal foil referred to in clause 11 shall be placed so that no flashover occurs at the edges
, K; e, y8 S3 r' S9 A8 zof the insulation.3 M* ^! \& B, }" Z6 S$ f
Glow discharges without drop in voltage are neglected. |
|