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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 T- A& ]- G k* {+ e- d. x
The WORKING VOLTAGE between any point in the PRIMARY CIRCUIT and earth, and between" q5 r( E( p8 j$ B4 U* t' K& z% _
any point in the PRIMARY CIRCUIT and a SECONDARY CIRCUIT, shall be assumed to be the# d6 F/ x3 G4 g1 D# L
greater of the following:7 C( D$ h# S3 f5 p7 I' m: ~4 }& D# b
– the RATED VOLTAGE or the upper voltage of the RATED VOLTAGE RANGE; and
0 @) |. ]* d0 D8 k# N6 M4 e– the measured voltage.9 N+ \! P7 F0 n. H4 P+ E: B
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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