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本帖最后由 安工 于 2016-5-31 18:53 编辑
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如以下条款摘录于UL 60335-1, 4 Y; h# A9 V& @ l& @$ j. z* `9 \
0 O" b/ b3 S9 _0 r3 \4 V( `& t) S3.4.1 EXTRA-LOW VOLTAGE: Voltage supplied from a source within the appliance that does not exceed 50 V between conductors and between conductors and earth when the appliance is supplied at RATED VOLTAGE.4 D- E0 p4 p4 X( t0 a3 [
3.4.1DV DR Modification to replace the definition with the following:
7 f9 ^$ r& a- p EXTRA-LOW VOLTAGE: Voltage that does not exceed 30 V rms or 42,4 V peak ac or dc.
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以上DV, DR的条款到底是美国的差异还是加拿大的差异?3 j6 I# m9 B: v) ]
还有D1, D2, DC, DE, 看了标准的定义,感觉比较空泛,没有真正领悟。 |
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