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5.1.6 Test measurements# I/ p0 D: `+ G) h1 Q4 U" @
Either the r.m.s. value of the voltage, U2, is measured using the measuring instrument of
( W _, r2 y+ s8 h% wFigure D.1, or the r.m.s. value of the current is measured using the measuring instrument of. k) H. v1 C' @5 C' y9 ]* Z5 A7 M4 Z
Figure D.2., G& y: Z e6 S" }7 u
The D.1 instrument gives a more accurate measurement than the D.2 instrument if the; Y+ q9 K9 Q# x8 u$ L$ w
waveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.' z* r% y8 S9 V
Alternatively, the peak value of the voltage, U2, is measured using the measuring instrument8 K. f1 w0 ]( I/ z+ `2 j+ S
described in Clause D.1.
9 `3 y* d8 P& z4 U1 ~/ C- hIf the voltage, U2, is measured using the measuring instrument described in Clause D.1, the
3 _5 g* Y% G7 L/ ofollowing calculation is used:
* i; }' L' l5 cTOUCH CURRENT (A) = U2 / 500" t3 @+ s$ ^6 @3 `
NOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better
3 j2 @: o, F5 Z) V6 {( ?- i. {correlation with the response of the human body to non-sinusoidal current waveforms.% x% Q. o8 Y: _4 E% {) S
None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in
, E7 }& v e7 Z" v) v8 U7 G+ ATable 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7.
9 w2 V/ J8 t, b. z6 ?这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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