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发表于 2008-3-14 10:55
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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).
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3 s9 C9 g7 d) w3 Z我们来看IEC 60950-1:2001之1.3.3:
; S, P) n! \( x- G) x1.3.3 Supply voltage
- D( X/ r6 ?1 \5 XEquipment shall be designed to be safe at any supply voltage to which it is intended to be" O w% N1 G6 x4 B
connected.5 O; N8 g. i, {3 g
Compliance is checked by inspection and by carrying out the relevant tests of this standard
- X$ Y2 g& @: K$ qunder the conditions specified in 1.4.5.
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2 F! B) _! M2 B* h% S再来看IEC 60950-1:2005的同一条款:
7 H" s% h2 Y4 \) l1.3.3 Supply voltage
0 u, I: z t# a, i/ O) H3 W) S5 WEquipment shall be designed to be safe at any supply voltage to which it is intended to be
! g5 d0 S) X7 q" V& Rconnected.1 O* P- d8 t ]* }5 R/ h: s" U) t
Compliance is checked by inspection and by carrying out the relevant tests of this standard
" R4 @- C- R8 Y6 A4 r8 Z2 cusing a supply voltage as specified in the corresponding subclause. If the subclause does not
% n- N% Z+ a" Y1 `8 f- \specify the supply voltage (explicitly or by reference to 1.4.5), then the value of the RATED+ V, k" ^5 [/ p, X
VOLTAGE or any value in the RATED VOLTAGE RANGE shall be used.& R# }7 ~' U4 P1 }
# \, } M6 \/ _' d/ k. x0 |' `0 G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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