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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。
: X* M9 a8 P$ M) l6 U- H: R! P9 f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。1 R. Q5 w9 E" I- t f* c4 P
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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
6 ^3 h H& i; ?not exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and# ~, c3 t5 k6 a) b& x( ?
– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
8 z. a& u) g# B! t+ cshall not exceed 0,1 μF,
6 W, G9 a1 _* X4 j! _3 X- N– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall4 X0 m1 x7 E& N8 w# P4 n
not exceed 45 μC,
$ O* E! S' ?2 o– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed7 S7 f( j" y% O) K& s5 d* p) g4 R
350 mJ.
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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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. d9 u& x1 l+ A' h; F) O* i没做过类似产品,只提供自己看法。 |
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