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5.8.4 For appliances marked with a rated voltage range and rated power input) S1 { P6 _3 m+ {
corresponding to the mean of the rated voltage range, when it is specified that the power& \% Q% s! c& M+ D6 x
input is equal to rated power input multiplied by a factor, the appliance is operated at u% T5 |( i, m9 l* h: v) E
– the calculated power input corresponding to the upper limit of the rated voltage range8 W" c' s5 A% \( n7 ^/ I/ b" ?
multiplied by this factor, if greater than 1;. X/ k1 K& g0 l' {8 ~ E1 S" r
– the calculated power input corresponding to the lower limit of the rated voltage range+ g% I- o, r) o0 Y
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' O* p# Y! v9 W$ K
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。1 i) f0 h n! K: x) Y8 Q; u: h
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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! x; z. x4 d$ C P8 n这种做法是正确的。
( `5 `; m) \( t* z8 Z ]. P/ k4 M' ?需要乘系数的原因是, 2400W 对应的电压是230V。 |
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