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。
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。
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
not exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
shall not exceed 0,1 μF,
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall
not exceed 45 μC,
– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed
350 mJ.
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。
没做过类似产品,只提供自己看法。 |