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本帖最后由 H-RH 于 2013-8-22 13:24 编辑 ! g. r( ~1 @! @+ _
6 N/ g8 o7 L( f/ J5 Classification of equipment* H# H& t# L7 y4 {6 b& C
For the purpose of harmonic current limitation, equipment is classified as follows:
+ U6 {; k+ G; B" k; P6 `9 yClass A:2 i5 o2 d3 J0 F9 o) Z- Q
– balanced three-phase equipment;
6 F# \* T+ e& N5 z( Q! z, n– household appliances, excluding equipment identified as class D;
) p; a) l- e1 d+ D7 t) \/ c- I– tools, excluding portable tools; P8 X4 m. U& F
– dimmers for incandescent lamps;8 a; H& Q' Z2 k) `; k0 m3 ]% D0 C/ I
– audio equipment.
" ~+ m X& P) g, |: B( F% HEquipment not specified in one of the three other classes shall be considered as class A N9 V4 Y7 y& J/ ?: S
equipment.. d) D1 ]0 T& x. V+ x/ f
NOTE 1 Equipment that can be shown to have a significant effect on the supply system may be reclassified in a# H7 I1 T" i1 d+ X9 U( p5 [
future edition of the standard. Factors to be taken into account include:
5 y% o* N$ z" E– number of pieces of equipment in use;6 l& w. l. ]" W/ {# }
– duration of use;$ S5 v: _8 d# j$ y
– simultaneity of use;; ? M$ l* ^( H; Y7 k
– power consumption;, P6 H+ e; ?5 Y
– harmonic spectrum, including phase.
3 Z# J$ l f4 ` E D7 n+ h
$ B" M; D+ J- r* H8 D6 B3 h+ h; Q& YClass B:
0 A. w9 J4 ~ D$ B, }$ b– portable tools;- }0 `7 }, ]) Q& g3 _
– arc welding equipment which is not professional equipment.
5 k, \, T, H" |% E8 A$ f+ A0 J6 }$ U6 Z
Class C:4 N' |) K& ^6 @9 R/ r# ]6 y' N
– lighting equipment.
7 j# e1 a7 L+ T' f, D+ j; [ t w$ E& ~$ B2 y! a; v
Class D:
# D! b/ ]( J# x6 Q$ REquipment having a specified power according to 6.2.2 less than or equal to 600 W, of the
9 F& k) W/ y$ r4 tfollowing types:' O- |' ^8 I4 w. |
– personal computers and personal computer monitors;
6 O! l5 m2 w& v+ d" w– television receivers.- P3 T( u( W3 p
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发表于 2013-8-22 10:55
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发表于 2013-8-22 13:22
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