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本帖最后由 安工 于 2016-5-31 18:53 编辑 # h8 k" l# {$ R0 t+ p
1 D( |% S2 B3 D8 P) o如以下条款摘录于UL 60335-1,
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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.
7 u2 W9 d2 M" v6 t 3.4.1DV DR Modification to replace the definition with the following:; R5 g* h: r/ P0 q( S
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?/ c4 U, R: x4 {$ F% r
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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