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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。' E X, h! @- e) |3 r/ ]
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。
7 _2 h+ u- _+ x" o3 u2 U
! Z; X4 P- E6 S% q/ M1 s& L* j0 E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
8 l' s E# Z! b* k, [not exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and
Q8 ?6 V5 m+ |0 w– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance. l3 ~7 O- X Y
shall not exceed 0,1 μF,3 x4 Y7 \; F1 j6 r' B
– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall& h( v* z0 m# V& T
not exceed 45 μC,
( Q" e9 v- T: A9 h" t– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed$ V; R9 _4 Z' v% J) O" i& t$ M! {1 Q
350 mJ.' s( o Y9 R- g+ W4 K; z3 {
7 c+ K8 k4 {& \! a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。# \% i" R6 ^% A, A4 b; g0 R4 E$ N
; x9 n4 Q6 c- W2 e6 k6 | ^ p$ p$ x没做过类似产品,只提供自己看法。 |
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