|
5.1.6 Test measurements
# @/ R, @. @3 E* h# DEither the r.m.s. value of the voltage, U2, is measured using the measuring instrument of) E- i/ `, t% |5 ~' r' x, d
Figure D.1, or the r.m.s. value of the current is measured using the measuring instrument of
) S3 R1 R1 h3 S' B% o+ MFigure D.2.
) d! a( d- P/ UThe D.1 instrument gives a more accurate measurement than the D.2 instrument if the
) E' O) W- g# }6 O Bwaveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz. N& y" ^8 @) I4 V
Alternatively, the peak value of the voltage, U2, is measured using the measuring instrument
1 r$ P, n0 ~/ S, s. @( Idescribed in Clause D.1.
! d1 g/ B Y; U# J1 gIf the voltage, U2, is measured using the measuring instrument described in Clause D.1, the
. D7 N: r: y3 G. Q6 e$ g: \- zfollowing calculation is used:/ V( k' O5 i) {/ h" V0 L" u! ~
TOUCH CURRENT (A) = U2 / 500
?7 _1 r! t# D( qNOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better4 H5 C2 k& F# D3 r$ H$ u# y' m
correlation with the response of the human body to non-sinusoidal current waveforms.$ R" J) \5 s+ V
None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in7 @) v3 z' x$ N I$ |
Table 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.8 d' {, B. j* ~, W! W
这个是EN60950的标准,里面有说如果是D1是用peak值。 |
|