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5.8.4 For appliances marked with a rated voltage range and rated power input
' x7 F }7 o9 ?9 |6 I4 ucorresponding to the mean of the rated voltage range, when it is specified that the power0 M8 a1 U! j7 ^+ _" K5 X- Z
input is equal to rated power input multiplied by a factor, the appliance is operated at2 P! B c$ I* q8 [- _; j
– the calculated power input corresponding to the upper limit of the rated voltage range
~. c# Q v/ H d" ?multiplied by this factor, if greater than 1;9 g4 A& O3 a2 t: P1 A9 w
– the calculated power input corresponding to the lower limit of the rated voltage range: D& t5 d# T; h+ t3 w6 |/ F# ?
multiplied by this factor, if smaller than 1.When a factor is not specified, the power input corresponds to the power input at the most$ U; s9 |$ L4 ]; n
unfavourable voltage within the rated voltage range./ L8 ~$ } s' t5 A; s: G; }" _1 O3 u+ |
: k3 c: n2 E5 {
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。% ^; s0 K% u7 y! T
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。: [1 v, J7 J/ z4 Z6 U
需要乘系数的原因是， 2400W 对应的电压是230V。 |
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