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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。
, p0 Z- j5 H5 L4 ?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。& `8 x' o5 f6 ^5 W
' p" [4 d, }. ^5 `! 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
( \, n+ p) k. J% pnot exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
2 X1 |# R# f! _! r– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
* V: D( Y: p! tshall not exceed 0,1 μF,0 n0 z$ j4 q( v7 p' H
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall# q7 F0 C1 W0 \
not exceed 45 μC,
+ m3 N1 u) Q Y5 ?( k" J– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed! w! w: y& D0 I& A) t. K/ M
350 mJ.4 D8 \- q" N0 u! w3 k
$ Z3 v/ ]$ G5 A6 J" z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。
1 O1 J5 L# e: T7 l6 z4 n! G+ S4 V2 y3 \% c/ y7 |2 v
没做过类似产品,只提供自己看法。 |
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