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5.8.4 For appliances marked with a rated voltage range and rated power input
3 K: n4 V: k7 J% K2 s9 u7 E( l( Scorresponding to the mean of the rated voltage range, when it is specified that the power3 V+ w9 G. E7 g6 d& O3 p6 t/ _
input is equal to rated power input multiplied by a factor, the appliance is operated at7 q; e% n0 W* x
– the calculated power input corresponding to the upper limit of the rated voltage range
9 G8 k' ^* L8 u& i* h0 Lmultiplied by this factor, if greater than 1;
; f2 d: ^5 e. J" y* e7 W# f– the calculated power input corresponding to the lower limit of the rated voltage range
8 \3 S1 [2 [- r6 r% j$ qmultiplied by this factor, if smaller than 1.When a factor is not specified, the power input corresponds to the power input at the most% v* U, k* B( x" L
unfavourable voltage within the rated voltage range.
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做19.2时,所乘系数小于1,所以按照0.85×(220 / 230 )^2×2400W来测试是对的。. H. j8 M9 d" S. B
做19.3时,所乘系数大于1,所以应按1.24×(240 / 230 )^2×2400W来测试。
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这种做法是正确的。$ f3 i: o# a9 V' D, y4 W
需要乘系数的原因是, 2400W 对应的电压是230V。 |
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