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电气间隙应该是没高要求的,因为其确定只和器具额定电压有关系。
& {) k, @) }5 r2 A2 {# b( l爬电举例和工作电压有关,但也不是很大,基本材料不太差,12.5mm就可以了。7 c5 v2 F6 E6 o+ {
6 P( s6 m& C; m
另外8.1.4中,可触及带电部件如果通过保护阻抗与带电部件隔离,If protective impedance is used, the current between the part and the supply source shall% Z- Q7 ~- l4 i! k# i
not exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
2 E/ }9 {) n' j @– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
7 v! K. w, O7 J/ Z9 \& R+ P, _shall not exceed 0,1 μF,: u h \5 A4 X: ?( F, M5 t! l
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall
4 l& O s, Y* F. Tnot exceed 45 μC,. q" e' ~+ v4 ^& e( \
– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed
4 v' n+ B& n$ b7 S350 mJ.+ q. Z p2 ]& F! i9 E
9 n% g9 v7 b7 a: Q也可以不视为带电部件,换句话说,手可以直接触摸,一般通过放电量测试。7 q" b, M" x. X9 V# }. z$ |
* U: Z6 n' L; a& C3 G7 u; l0 D5 Y, a没做过类似产品,只提供自己看法。 |
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