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不知道LZ从哪里看到的这个条款?* E' S+ ?& i4 h0 d* d/ y6 S' @* w
EN 60335-1:2002 27.5
8 U6 e" R1 h q+ O( ~A current derived from a source having a no-load voltage not exceeding 12 V (a.c. or d.c.) and+ Y4 ?+ K- `, L8 X9 v
equal to 1,5 times rated current of the appliance or 25 A, whichever is higher, is passed
. c& p! ~% ]0 o7 i' Y+ g5 U- Fbetween the earthing terminal or earthing contact and each of the accessible metal parts& p" s, i3 z# n' i$ x
turn.
( P6 _, n& Y; AThe voltage drop between the earthing terminal of the appliance or the earthing contact of the4 W: j- d, g9 K: C" ^7 U
appliance inlet and the accessible metal part is measured. The resistance calculated from8 s! U, x4 d( w
the current and this voltage drop shall not exceed 0,1 Ω.
! Y2 B/ f3 A5 a: D标准只是说从空载电压不超过12V的电源取得电流,电流值等于1.5倍的额定电流或者25A(取较大值).! Y r& a7 `* F( _ o* M7 R
测试时施加的是电流,读到是是电压.通过计算能得到电阻..并不是同时施加电压和电流. |
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