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我们电源产品输出标识: 额定输出电压, 额定输出电流: A8 h! I3 e, ?+ s2 B/ ^0 `1 I7 t
我从IEC61558-1:1998 和IEC61558-1:2005 两个版本, 分别找到如下的描述:- V/ e! ]+ ]( W3 C$ ~* k% W
1. 出自IEC61558-1:1998 clause 14.2
. f% s6 K" U% Z2 MTransformers are connected to rated supply voltage and loaded with an impedance which would give rated output, at rated output voltage and, for a.c. current, at rated power factor; then the supply voltage is increased by 6%. After this voltage increase, no change is made in the circuit, the test is repeated under no-load condition if this a more unfavourable situation2 Q" t) X& Z0 A
+ q3 K+ r( b6 ~' L. U: ?2. 出自IEC61558-1:2005 clause 14.1
" G1 ^5 X1 V, gTransformers are supplied at the rated supply voltage and loaded with an impedance9 C; @; m2 _3 x5 b
producing the rated output, at the rated output voltage and, for a.c. current, at the rated/ H9 y( o8 R9 \- w3 A
power factor. The value of the output current is measured when steady state is established.) _" D& g6 G: S! Z: M) v% K7 T9 B
Then the supply voltage is increased by 10 % and the output current is adjusted to the same
7 a0 `+ r* c3 I) Bvalue measured before. The output current is not adjusted for independent transformer. After
Y. \% j7 P3 N0 V# w' p2 Cthis no change is made in the circuit. The test is repeated under no-load condition if this is a
6 n. v9 \& i- G0 X- \7 Z# x3 T' v }9 Vmore unfavourable situation.: s. f0 l0 ] s
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从1998版标准, 明显可以看出"方法2"是对的.( d2 H) [8 p4 ?0 g* s9 a" _
从2005版标准, 针对independent transformer而言, 也应采用方法2' i/ ?; p3 ~7 W- N
且看independent transformer的解释:" `( @3 B) b. ^7 }+ j! _/ {
3.1.7
4 v* }+ G# [( g$ y: c* Qindependent transformer
Y3 P% [$ |7 g" D6 [5 @+ @* n: Ftransformer designed to supply unspecified appliances and intended to be used without any$ u2 M' g# m! n) x
additional enclosure which provides protection against electric shock7 a( j; J4 S/ b
NOTE􀀂 Such a transformer can be either a portable transformer or a stationary transformer/ u+ `6 I6 r' G& `! w
可见外置电源产品属于independent transformer, 应该采用方法2了.3 ]( B6 S8 E5 A) [) f8 E
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原来, 受到61558标准的影响, 所以对方法2影响深刻. 其他标准, 我不知道有没有类似的说明. |
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