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5.1.6 Test measurements+ e- j- E: D9 A }4 o
Either the r.m.s. value of the voltage, U2, is measured using the measuring instrument of
# C6 s! _1 D6 dFigure D.1, or the r.m.s. value of the current is measured using the measuring instrument of& N. z) n* s- p; \
Figure D.2.
4 N/ t3 i( b- s& m! {/ _# mThe D.1 instrument gives a more accurate measurement than the D.2 instrument if the
1 G3 f/ [- o2 Q' \waveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.
k& E& @& {) j% ^4 f% i0 tAlternatively, the peak value of the voltage, U2, is measured using the measuring instrument
% d7 r/ ~5 a5 Z( A( r* c7 kdescribed in Clause D.1.4 ~6 A- o$ q# t& d r
If the voltage, U2, is measured using the measuring instrument described in Clause D.1, the+ U8 P4 \& e1 y* `1 y+ v* F
following calculation is used:5 L) c$ H( L5 C q% U
TOUCH CURRENT (A) = U2 / 500
8 X& R8 K- @, R& c" V! n6 }NOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better* t7 F' O9 a) S; h& O
correlation with the response of the human body to non-sinusoidal current waveforms.) M+ o F/ I e( D* h" E6 L
None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in
6 X; c4 t3 j2 M& TTable 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.
" ?" D$ i# h# j这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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