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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。" Q7 {8 ?/ z* c, M; E
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。9 n% {6 `+ u# Y3 p
3 A, r3 d$ P; W, }. G. y; J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$ W$ R$ v% e2 J5 ~6 A
not exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and( Q. b6 P6 O+ a n$ M8 E2 I
– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance3 ^' b6 ?; h, j; M& I
shall not exceed 0,1 μF,2 k# l: I+ A0 G9 w8 R% f
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall
: z% `; E: [ j [not exceed 45 μC,
+ z' `, [* f' J5 G& _4 N( ^3 I6 B– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed
7 r6 K0 f8 a! J) D, v: p0 }5 y350 mJ.
# p' N( Y) E. T% g1 W0 \ o' |4 o0 g" B: o( G8 e
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。* c& |0 n$ E& C6 ?" {- Z( K
Z X3 O7 l8 F: P& k
没做过类似产品,只提供自己看法。 |
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