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看輸入電流。其實輸入功率和輸入電流是對應的,而觀察輸入電流比較容易一些。 输入功率与输入电流并不总是对应的,呵呵. 多比较几组数据还会发现,它们往往是冲突的(如50Hz功率比60Hz大,但60Hz电流比50Hz高,或反之).2 A4 `0 ?# k) P9 E" v/ ?9 E$ f
* G$ o7 F d. f/ Q) N3 h我们来看IEC 60950-1:2001之1.3.3:0 F, F9 Z. A8 k' C: s& P
1.3.3 Supply voltage
1 j9 A$ X0 P* j6 m5 g# vEquipment shall be designed to be safe at any supply voltage to which it is intended to be4 F# M- }" L4 `
connected.
" W# I% F( N) J0 k8 U0 _" T$ i5 u) h- dCompliance is checked by inspection and by carrying out the relevant tests of this standard
4 D# m, e3 c1 B8 ? punder the conditions specified in 1.4.5., Z) V% A! K. k6 L- i( l
1 n# A# {; p: y/ D: B( c
再来看IEC 60950-1:2005的同一条款:
5 E( g' D/ b2 m0 E( d0 ?1.3.3 Supply voltage
) d- W' L% z/ m; _. K7 Q V3 B SEquipment shall be designed to be safe at any supply voltage to which it is intended to be
+ q* J2 b; u/ y' M: i, R: Sconnected.! S0 U% A a$ G, }4 z
Compliance is checked by inspection and by carrying out the relevant tests of this standard
' J3 e6 ]! Z9 {using a supply voltage as specified in the corresponding subclause. If the subclause does not
8 j' ?/ V( H3 c! v6 {' u9 J Rspecify the supply voltage (explicitly or by reference to 1.4.5), then the value of the RATED
: k" Z5 A& O/ E/ } e* vVOLTAGE or any value in the RATED VOLTAGE RANGE shall be used.
0 J- k, s7 n# C+ |- b! y- ~7 R. \7 Z8 ]( y, ?* k. u1 j8 \
很明显,最新版的950明晰了: 如果具体的条款没有特别指出电压要求,或没有引用1.4.5, 就应该用额定电压(范围). 不知各位怎么看标准的这个变化? |
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