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EN 60335-1中有这样几句话
$ j0 ]- W& A- x g5 Z& V7.5 For appliances marked with more than one rated voltage or with one or more rated3 g& c) b9 L+ S
voltage ranges, the rated power input or rated current for each of these voltages or ranges3 F2 {- {9 K+ q) y9 p3 x. ^5 _
shall be marked. However, if the difference between the limits of a rated voltage range does
0 T3 n/ \( k; knot exceed 10 % of the arithmetic mean valueof the range, the marking for rated power input or . L0 n. h, P7 ~' m i
rated current may be related to the arithmetic mean valueof the range.
9 k7 o: r$ a$ I1 ^, c) P$ q* D6 j6 P! ^5 w
10.1 / Z$ Q% V$ u/ I* c1 M) l
NOTE 2 The test is carried out at both the upper and lower limits of the ranges for appliances marked with one or more rated voltage ranges, unless the marking of the rated power input is related to the mean value of the relevant voltage range, in which case the test is carried out at a voltage equal to the mean value of that range.# K) c! g, ?) y; c) S* q
NOTE 3 The permissible deviations apply for both limits of the range for appliances marked with a rated voltage range having limits differing by more than 10 % of the mean value of the range.(A2中由note改为正文，未改动文字)
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这几句话怎么理解？如果7.5理解为电压范围上下限超过平均值10％则不能只标电压范围的平均值对应的功率，那么超过平均值10％的情况都应该分别标上限、下限对应的功率，按照note 2上下限都要进行测试应该已经涵盖了note 3所谓该情况下允许偏差适用于上限和下限，note 3是不是多余了？ |
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发表于 2008-8-20 21:20
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