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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。
+ y6 G2 V3 j; G* f4 H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。
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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" i. p! P6 ]! o6 T; R7 O- }4 L
not exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
( _' D5 |$ G# j! e* `% J) z– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
( n! c }) j3 J& t- @9 Z3 bshall not exceed 0,1 μF,6 m- Y4 N0 N0 R$ \$ M. ^$ }% k
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall. ?% k# `7 i' `; y; G% C
not exceed 45 μC,7 b: @8 E; z( Z6 F
– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed
+ G5 S+ E' N O6 q, i( q' t2 _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。0 N# {; W2 G6 P" i
0 S4 @ C' z' Y9 z没做过类似产品,只提供自己看法。 |
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