|
5.1.6 Test measurements9 b, T: Y Q8 a
Either the r.m.s. value of the voltage, U2, is measured using the measuring instrument of0 T7 G @, s: d
Figure D.1, or the r.m.s. value of the current is measured using the measuring instrument of7 k! m3 U% O. t4 f
Figure D.2.0 Q) H" K8 P; J2 q
The D.1 instrument gives a more accurate measurement than the D.2 instrument if the2 w, M% o* w9 Z% [7 b
waveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.. j3 b/ |0 ^# O
Alternatively, the peak value of the voltage, U2, is measured using the measuring instrument
6 Z) G k( d* V6 t! Fdescribed in Clause D.1.- p1 {; W7 \8 e; T) k
If the voltage, U2, is measured using the measuring instrument described in Clause D.1, the3 |) ?( |3 M2 }9 z0 [9 _
following calculation is used:
; q6 d, u( s$ y5 m' A' V( ]TOUCH CURRENT (A) = U2 / 5005 j9 v/ A& D& P( \3 k
NOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better
2 W9 H* T: O( X1 e' v9 I9 Z# vcorrelation with the response of the human body to non-sinusoidal current waveforms.1 q7 q0 d* Q; Y9 T* h$ A
None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in
0 i, G4 {% g" R1 r) T4 o! pTable 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.
" G8 O; W- [) M( [$ f这个是EN60950的标准,里面有说如果是D1是用peak值。 |
|