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5.1.6 Test measurements$ r2 L" |# `- z/ D
Either the r.m.s. value of the voltage, U2, is measured using the measuring instrument of
0 j6 F& {+ S! I3 j3 S3 j7 \Figure D.1, or the r.m.s. value of the current is measured using the measuring instrument of
# _8 Y5 Z5 U. r6 Z5 fFigure D.2.
- r8 e' x& P1 cThe D.1 instrument gives a more accurate measurement than the D.2 instrument if the. q) c1 A# w9 |$ g
waveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.& }* ?& S0 { i% Y
Alternatively, the peak value of the voltage, U2, is measured using the measuring instrument
8 a0 O8 j* [2 j& E" vdescribed in Clause D.1.3 n5 v5 _5 w! A& ?# Y
If the voltage, U2, is measured using the measuring instrument described in Clause D.1, the( H1 ^# G4 G7 K8 d' K# {
following calculation is used:% c, q z" J: |* o) [
TOUCH CURRENT (A) = U2 / 500
( V- K( }7 x2 I: \- ]% UNOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better
; Q, Y$ \9 L0 r# t: s) Rcorrelation with the response of the human body to non-sinusoidal current waveforms.
5 @6 H+ m% o- [9 ?$ V% z- ONone of the values measured in accordance with 5.1.6 shall exceed the relevant limits in
) v7 |" i; s# J3 Q. A2 B* F" ZTable 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.
6 ~& G% b. w% F这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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