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在60950中拔插头测试里1S后插头L/N,或者L/地,N/地之间残余电压衰减到多少才算合格呢???
- @1 G' ?1 ^( M# u+ _' O标准中:
% e( p. }! t/ f$ \0 ]9 Q2 z( kThe relevant time constant is the product of the effective capacitance in microfarads and the
6 `0 Z* ^6 D1 d( @2 Veffective discharge resistance in megohms. If it is difficult to determine the effective# n; {+ d, X2 {9 c. V8 d' u
capacitance and resistance values, a measurement of voltage decay at the point of external& g+ U- |% \7 Y" j" s- y
disconnection can be used. When conducting the voltage decay measurement, the result is k# g$ D: ~( s# V
referred to an instrument having an input impedance consisting of a resistance of
: O) z, w2 h/ q100 M Ω ± 5 M Ω in parallel with an input capacitance of 20 pF ± 5 pF.
/ e* A x: b4 sNOTE During an interval equal to one time constant, the voltage will have decayed to 37 % of its original value.
: e4 Q; w @$ s- a4 |3 H. u' e. B8 B0 V5 z/ a8 _
注:在经过一段等于一个时间常数的时间,电压将衰减到初始值的37%。
: | h+ B) I- k, j8 ~/ J$ ?这个怎么理解?? |
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