ylgc123 发表于 2018-7-23 17:04

UL体系是否有类似IEC中低功耗电路不存在起燃风险的条款

有听说，但是翻了982、1082、746C都没找到，心累~~~美标大神来拯救一下

plmijb 发表于 2018-7-26 08:50

试试UL244

qin.cq 发表于 2018-7-26 20:25

UL746C好像有

mf0715 发表于 2018-8-7 08:23

746c 2015

3.34 RISK OF FIRE – A risk of fire is considered to exist at any two points in a circuit where;
a) The open circuit voltage is more than 42.4 V peak and the energy available to the circuit
under any condition of load including short circuit, results in a current of 8 A or more after 1
minute of operation, or
b) A power of more than 15 watts can be delivered into an external resistor connected between the two points.

Frank1991 发表于 2018-8-7 09:02

UL 746c里面有的
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