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本帖最后由 安工 于 2016-5-31 18:53 编辑 8 s4 V9 r7 S6 x. T
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如以下条款摘录于UL 60335-1, . p# T& S- {# U; _$ B- b2 ?% \* Y
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3.4.1 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.
6 r, Y9 N" L1 i# |; d' Y 3.4.1DV DR Modification to replace the definition with the following:& t6 `; E2 o9 q) k, @7 B
EXTRA-LOW VOLTAGE: Voltage that does not exceed 30 V rms or 42,4 V peak ac or dc.4 Z' _ k. j/ ^* Y, M+ G! }6 e
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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?
) i9 Q8 {) J5 p! y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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