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5.1.6 Test measurements
. S) F5 n: y' ]9 tEither the r.m.s. value of the voltage, U2, is measured using the measuring instrument of
+ g. L' l/ ~8 y8 |% N5 pFigure D.1, or the r.m.s. value of the current is measured using the measuring instrument of/ A' A O/ _0 V
Figure D.2.
9 G t: y: u: J) @9 ]% zThe D.1 instrument gives a more accurate measurement than the D.2 instrument if the
$ Z" _$ O+ ^0 B) M( Jwaveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.
' v( W5 ]# d3 X$ O0 w2 EAlternatively, the peak value of the voltage, U2, is measured using the measuring instrument/ Q; r! [# O) `3 h* z" e/ U
described in Clause D.1.
4 c1 X5 M8 [2 U6 {If the voltage, U2, is measured using the measuring instrument described in Clause D.1, the
: a) ?4 s; [' `' Afollowing calculation is used:
8 C& y. D/ o2 Z( s+ eTOUCH CURRENT (A) = U2 / 500
# B2 K. a( ~% h& `7 _ c! ]NOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better& T$ M+ K, Y6 k
correlation with the response of the human body to non-sinusoidal current waveforms.3 Z9 w4 C5 Z, f! x
None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in( r' t& p. E( G, j0 k
Table 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.% a [! L. I v
这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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