|
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。
: P3 ?0 U2 s2 f& q$ K2 M& V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。* N/ t0 z2 c2 D6 l; V- f: E v U
# i$ y0 W4 X4 v& b, r5 N! t
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
6 A: C; u) h/ j+ a* Z2 unot exceed 2 mA for d.c., its peak value shall not exceed 0,7 mA for a.c. and* X) J+ h( G/ |- L
– for voltages having a peak value over 42,4 V up to and including 450 V, the capacitance
+ B# ]' D; ^9 H" eshall not exceed 0,1 μF,
- C+ L f, {2 F" Z0 x– for voltages having a peak value over 450 V up to and including 15 kV, the discharge shall4 N& a2 G" ~ d5 Q
not exceed 45 μC,
( J5 }) x' x3 c5 s8 S– for voltages having a peak value over 15 kV, the energy in the discharge shall not exceed
2 E: u* x' M8 U! i350 mJ.
& i$ _) p" y% m) @
' \! v7 g4 S \3 v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。' ^4 E( O) g3 |. G- q) s0 O
; {$ K: J" b4 V$ S l, \! S
没做过类似产品,只提供自己看法。 |
|