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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。
5 _/ Y6 \" y4 d& L' }: n8 V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。. c3 J: [" Z8 L( R2 P1 y8 n6 b5 a4 N
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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
* K0 M2 R% W7 L8 q# D# z) vnot exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
# V' {0 I4 b" I( Q, K6 K2 `– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
8 m2 G4 L; U0 e& ?% E% t1 q6 mshall not exceed 0,1 μF,2 f+ h& }1 C4 D% I% E( E
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall
- Z8 Z( j0 X/ H- |5 J, \0 o- Snot exceed 45 μC,
3 O, S6 d2 I4 q# c* [– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed$ _& {4 q6 D2 e: o; T
350 mJ.
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2 q+ o; T7 P4 C2 g O7 {+ g* K( C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。
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6 v3 X' s) Y! a( Q* [没做过类似产品,只提供自己看法。 |
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