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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,
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+ N- r' H) j& K' W: B- w% Q. y9 W1 ]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.
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EXTRA-LOW VOLTAGE: Voltage that does not exceed 30 V rms or 42,4 V peak ac or dc.6 I- A' e. q0 H7 U
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) c x% S/ z; [. T以上DV, DR的条款到底是美国的差异还是加拿大的差异?7 v- a& e& W4 d8 J$ H% t- ^
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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