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发表于 2010-6-12 08:57
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If the result of the TOUCH CURRENT measurement on any of the above equipments exceeds2 a9 p" a3 e6 y' p+ M( v; _* @
3,5 mA r.m.s., the following requirements a) and b) apply, and also, if relevant, those in7 `7 G% _6 C! s6 V1 Q: W* d
5.1.7.2.
9 j5 k _, }& Q. Ea) The r.m.s. PROTECTIVE CONDUCTOR CURRENT shall not exceed 5 % of the input current per
; f. _0 U- X' S5 W! T J7 uline under normal operating conditions. If the load is unbalanced, the largest of the three
2 W+ v' ?+ y- K; y; Zline currents shall be used for this calculation.To measure the PROTECTIVE CONDUCTOR CURRENT, the procedure for measuring TOUCH CURRENT is used but the measuring instrument is replaced by an ammeter of negligible
W! g8 c3 w* o |+ I! M# m( @5 Kimpedance; and : Q/ D/ d3 ~, N
b) one of the following labels, or a label with similar wording, shall be affixed adjacent to the
7 a5 P u ?# L0 t) u( T' \1 @5 hequipment AC MAINS SUPPLY connection:
& k* E! q& J7 u, T& yWARNING HIGH LEAKAGE CURRENT EARTH CONNECTION ESSENTIAL BEFORE CONNECTING SUPPLY WARNING
4 J) e$ A2 N5 t0 _3 `2 x- cHIGH TOUCH CURRENT EARTH CONNECTION ESSENTIAL BEFORE CONNECTING SUPPLY
# l+ d! s" F" W2 p, pCompliance is checked by inspection and measurement. |
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