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1. 工作电压的Vp值应用最大值或最小值两的最大数值(不考虑电压的正负极性), 例如测量电压的最大值为456V, 最小值为-505V, 则Vp值就是505V;
# Z7 [' I/ O0 G) }2. 首先可以肯定的告诉你, 你的这种理解不正确. 其标准要求的是PROTECTIVE CURRENT RATING值的2倍, 需这个值并不是你所理解的2.5A, 而是指是的产品所用的保护电路的RATING值, 在标准的2.6.3.3条款中有说明, 如下:
* ]/ \! d% E g% B# ?6 `" h8 oa) For PLUGGABLE EQUIPMENT TYPE A, the PROTECTIVE CURRENT RATING is the rating of an! W* p" m6 C( @$ E5 f
overcurrent protective device provided external to the equipment (for example, in the
8 F e4 R. X+ T1 o1 [8 ]+ B5 D/ r Pbuilding wiring, in the mains plug or in an equipment rack) to protect the equipment, with a
4 _9 B7 j# O- d ]) q! bminimum of 16 A.
& A1 P$ f( M6 { d5 N: oNOTE 1 In most countries, 16 A is considered to be suitable as the PROTECTIVE CURRENT RATING of the circuit.3 O8 J: M& z# Z1 j! O
NOTE 2 In Canada and the United States, the PROTECTIVE CURRENT RATING of the circuit is taken as 20 A.
- P r1 i) o6 R! d, }. o+ RNOTE 3 In the United Kingdom, the current rating of the circuit shall be taken as 13 A, not 16 A |
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