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5.1.6 Test measurements
1 `) t+ H }& ^) M, cEither the r.m.s. value of the voltage, U2, is measured using the measuring instrument of
' U$ |3 J5 ?6 m q( IFigure D.1, or the r.m.s. value of the current is measured using the measuring instrument of
- G P7 l9 y$ F+ e8 aFigure D.2.
) C% o6 }& v! n! h- CThe D.1 instrument gives a more accurate measurement than the D.2 instrument if the
+ L$ t5 h& U: b1 W$ hwaveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.
) w" x4 C$ H/ c1 w* GAlternatively, the peak value of the voltage, U2, is measured using the measuring instrument+ p2 `& R5 E; _
described in Clause D.1.
6 G6 B; Y' } R+ eIf the voltage, U2, is measured using the measuring instrument described in Clause D.1, the
! G: p, h8 u$ @9 N% Rfollowing calculation is used:. Q$ H/ H7 Y$ o3 ~3 V
TOUCH CURRENT (A) = U2 / 500
1 R$ Y' {5 K$ V1 J/ e+ N6 p; iNOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better6 B+ b5 V2 m3 ]! z7 Y) U
correlation with the response of the human body to non-sinusoidal current waveforms.
# z% F9 w0 S7 R' o4 `( A/ {None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in7 w3 s1 v! j1 w! _/ K
Table 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.
* x4 H o* v( _7 o Y. R这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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