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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。。”3 i5 W' U5 v# q0 N: `
3 D& q! o7 y% G- P9 n. Z9 k k61347-1 IEC:2000' U% n" D3 c6 t" U
) Z. h" \$ D4 O, ]& @' i- a12 Electric strength
- ~. ^( J0 E/ r4 G: ^8 SLamp controlgear shall have adequate electric strength.
q6 B3 r' L( i6 c& `% L4 YImmediately after the measurement of the insulation resistance, the lamp controlgear shall' T o" P$ K4 u0 U- E j" _" G
withstand an electric strength test for 1 min applied between the parts specified in clause 11.
0 k& |3 R! N' w( OThe test voltage of substantially sine-wave form, having a frequency of 50 Hz or 60 Hz shall6 y0 K$ {$ x4 i V+ J1 M3 ^+ o
correspond to the values in table 1. Initially, not more than half the specified voltage shall be
% c1 K" o' z0 W9 w, C6 V: ]applied, the voltage then being raised rapidly to the prescribed value.6 E* t& {! O7 t9 O% u
# R5 ?, S! I4 A6 U* ] Table 1 – Electric strength test voltage/ X8 h2 F' b, j4 h v/ N' ^
Working voltage U Test voltageV
9 _8 m& m" E! f7 EUp to and including 42 V 500
( _. {: u c% R, J! AAbove 42 V up to and including 1 000 V 2 U + 1 000$ N# M1 U. e( S- j
+ M4 l7 M% F; `. t# D' uNOTE For convertors, the electric strength test between parts separated by reinforced insulation shall be in accordance with figure 9, curve B, of IEC 60065.0 O0 W1 j9 Q- P/ s9 |7 Q
; f) @4 o8 w0 jNo flashover or breakdown shall occur during the test., n$ C0 q/ [! a) l: D0 H
The high-voltage transformer used for the test shall be so designed that when the output* O5 w' Z5 D+ l B! k5 V8 l/ v
terminals are short-circuited after the output voltage has been adjusted to the appropriate test
' H; l- X1 Y/ c" Dvoltage, the output current is at least 200 mA.
8 M. m4 J$ {) \+ {3 OThe overcurrent relay shall not trip when the output current is less than 100 mA.
; D5 v& n0 W: P0 L0 z/ g* wThe r.m.s. value of the test voltage applied shall be measured to within ±3 %.9 c' U( J+ A3 e! {- l2 S
The metal foil referred to in clause 11 shall be placed so that no flashover occurs at the edges! s: }0 N( h( ^% I( E% {% E
of the insulation.. A8 f" P$ R1 H s8 x6 O, }
Glow discharges without drop in voltage are neglected. |
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