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标准UL 60950-1 第2.10.2.1章节 g)条有对工作电压的确定做说明:
8 F9 T8 W& G) MThe WORKING VOLTAGE between any point in the PRIMARY CIRCUIT and earth, and between
( C' Y* P7 N. t+ f1 `any point in the PRIMARY CIRCUIT and a SECONDARY CIRCUIT, shall be assumed to be the4 f$ ^$ L( j7 x0 V; p. A7 t
greater of the following:
+ E0 \0 i3 G' l; V* P– the RATED VOLTAGE or the upper voltage of the RATED VOLTAGE RANGE; and+ \. D& @: Z3 x: ?: N3 C
– the measured voltage.7 R: p/ X% d/ }" h* \. C
是额定电压或电压范围的上限值和实际测试的工作电压做比较,较大者为此测试点的工作电压。所以一次侧到接地金属至少为额定电压或额定电压范围的上限值。然后根据这个情况取值再去查表。 |
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