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5.1.6 Test measurements
7 i. e. Z. N, R5 G3 nEither the r.m.s. value of the voltage, U2, is measured using the measuring instrument of) w& [8 D3 g5 I& |* G- ~+ w% C+ F
Figure D.1, or the r.m.s. value of the current is measured using the measuring instrument of
. e1 [* u& k: j% V& p) W' lFigure D.2.$ y" X8 E ?5 ?1 a/ g9 X( L$ ]
The D.1 instrument gives a more accurate measurement than the D.2 instrument if the- F2 u- \0 p, q$ O
waveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.) x3 Y9 b) R9 C2 g
Alternatively, the peak value of the voltage, U2, is measured using the measuring instrument
8 @+ b8 G& y' w) y' i+ K; s% Xdescribed in Clause D.1.7 N/ I1 ^+ ?6 `, u+ c) w' s; B
If the voltage, U2, is measured using the measuring instrument described in Clause D.1, the
$ u0 V7 m8 x, L5 s7 Ufollowing calculation is used:
/ q. v8 w8 g! B5 A+ F, gTOUCH CURRENT (A) = U2 / 5001 W# h9 k0 P" J! {5 S* v
NOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better/ _2 {( {) O/ ?/ D
correlation with the response of the human body to non-sinusoidal current waveforms.
- u5 s5 r! s2 xNone of the values measured in accordance with 5.1.6 shall exceed the relevant limits in* S% B: g; s% g
Table 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.
* @& i# L- m* v: r这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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