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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。0 J: E0 c. {6 K6 b! v" H0 u
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
( N( Y: k4 _2 l+ ?# I5 ~ ^8 Jnot exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
3 ~9 k2 `) M1 H– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
* i( e$ f5 t5 |% m0 h8 C, ?& L* jshall not exceed 0,1 μF,
% o! u/ w0 V) r- D4 _6 X– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall
4 z( z" }4 f/ Z& V' V' K( Nnot exceed 45 μC,
7 f& }0 P' q6 s. p( F– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed
; Z# d6 D; ~" E9 O1 ^350 mJ.2 S# l5 o: u% U) ]1 u& m) B& ~; N
' Y, V2 l2 z, W+ j. P' `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。9 z6 T6 Y5 O1 ?$ o% Z
; w( L- W% n& A4 J- c1 h( |没做过类似产品,只提供自己看法。 |
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