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引用第3楼aha0827于2011-04-15 13:47发表的 :! w) |' B3 W# f" O: [
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6 ]$ @8 b; r% T6 e% g ~8 Z2 ^& ~UL1031是哪个版本,我使用的第5版(2009)没有该条款耶!
& [3 i2 D' K) m+ F! c) U' [在UL60950-1中插孔极性标识是通过以下来规定的吗?
9 B2 [) s1 J" d+ T2 f----Symbo for nature of supply , for d.c. only W) [$ [7 {, C
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UL60950-1 中是通过Symbo for nature of supply , for d.c. only规定的,而且还可以参考TableNAA.1(informative)1.7.1 1 i% S$ p" k( Z# O; Q5 I5 Y
# ~/ o% z' a& `, B* L1 B1.the following information may be provided: c)rated output frequency or frequency range or symbol for d.c8 k- a4 m) b- Y8 z8 }) S
: h0 ^. A* K& W6 x/ U. X7 s*************************************************************************************************
* E* C. n* _$ j. K& m" {+ @UL1310 我刚才看到是2001年的,第五版在clause 51.64 B0 [8 [- n1 O$ p
/ C% d6 M3 ^7 I6 _6 I6 z, d; R) LThe polarity of a direct-current output shall be plainly marked, unless the unit is provided with a5 m) s4 E7 G, q H6 Z* N/ t/ h" H
polarized termination. |
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