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5.1.6 Test measurements
3 }5 q! v+ O" \2 l$ b3 G2 cEither the r.m.s. value of the voltage, U2, is measured using the measuring instrument of) A! L9 @' s0 U# s
Figure D.1, or the r.m.s. value of the current is measured using the measuring instrument of% H% U: U6 X7 j: @3 h
Figure D.2.7 ?! E1 }3 c% j& k; s6 j' d* `. P6 y
The D.1 instrument gives a more accurate measurement than the D.2 instrument if the! b. ^7 Y# K2 W- Z" r
waveform is non-sinusoidal and the fundamental frequency exceeds 100 Hz.
4 s4 A$ L& O' m# {! f& A7 V( D% GAlternatively, the peak value of the voltage, U2, is measured using the measuring instrument
% i d% m8 A+ B9 ndescribed in Clause D.1.
. U8 w% j/ z, }, J1 W1 c5 pIf the voltage, U2, is measured using the measuring instrument described in Clause D.1, the
7 ?3 ?, f# s: D) lfollowing calculation is used:2 A. @ Z/ O4 t' S' c" @
TOUCH CURRENT (A) = U2 / 500 V5 Y; p/ G$ d4 b5 Z* t
NOTE Although r.m.s. values of TOUCH CURRENT have traditionally been measured, peak values provide better# C# g# R( J# e( t4 f' A0 f. k
correlation with the response of the human body to non-sinusoidal current waveforms./ Z' _4 B' T4 z' ]5 h, ~
None of the values measured in accordance with 5.1.6 shall exceed the relevant limits in
) Z& C8 `# R% E$ x1 s8 ^. K& X8 fTable 5A, except as permitted in 2.4 (see also 1.5.6 and 1.5.7) and 5.1.7., I% {4 i& _$ Q/ G, c2 r; b
这个是EN60950的标准,里面有说如果是D1是用peak值。 |
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