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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。。”
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61347-1 IEC:2000' U" u* g- v3 k8 y5 S5 a
+ V* U3 a- h- K9 c12 Electric strength: r+ \' I1 z+ `2 e7 l2 H/ M3 S
Lamp controlgear shall have adequate electric strength.. r- L/ W' v6 T$ P
Immediately after the measurement of the insulation resistance, the lamp controlgear shall
7 O9 ^) T# z. wwithstand an electric strength test for 1 min applied between the parts specified in clause 11.
" m. M3 j" f3 x/ v4 _9 y |The test voltage of substantially sine-wave form, having a frequency of 50 Hz or 60 Hz shall
! F I, l1 i: {4 u- Y1 ]! l& j6 xcorrespond to the values in table 1. Initially, not more than half the specified voltage shall be
# V: \; H3 ?% }0 rapplied, the voltage then being raised rapidly to the prescribed value.! }* C3 E: G F7 }; x
- m' D; d% s/ r3 U8 A Table 1 – Electric strength test voltage
% R2 ~' a5 z; \2 z/ aWorking voltage U Test voltageV4 B4 x0 J4 P1 `9 z: ?
Up to and including 42 V 500
# w* Y1 b7 v0 Q% \6 |Above 42 V up to and including 1 000 V 2 U + 1 000) {* k, @( _& T" s4 l
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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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No flashover or breakdown shall occur during the test.% h& L5 B7 k2 C$ L6 ]
The high-voltage transformer used for the test shall be so designed that when the output
: ]' P5 d7 y+ P/ F+ p; Aterminals are short-circuited after the output voltage has been adjusted to the appropriate test
9 y0 a# r6 L8 ~7 ?' F2 @; x7 Tvoltage, the output current is at least 200 mA.
' I# H& |6 P( Z1 m. VThe overcurrent relay shall not trip when the output current is less than 100 mA.
' W! F$ U9 w' B7 s. _! p7 `% KThe r.m.s. value of the test voltage applied shall be measured to within ±3 %.. _$ ]4 B" E7 `- P% u
The metal foil referred to in clause 11 shall be placed so that no flashover occurs at the edges q+ g/ l" w# }5 n
of the insulation.% i4 B1 j1 j: o7 \
Glow discharges without drop in voltage are neglected. |
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