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本帖最后由 H-RH 于 2013-8-22 13:24 编辑
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6 A& l( U( x8 [, z/ A5 Classification of equipment
0 D. T3 U& b; [6 V( ]For the purpose of harmonic current limitation, equipment is classified as follows:- a- h/ S) l l4 b. S8 N' R" {
Class A:6 s% X4 ], e) Q1 {9 }/ Q3 w6 y
– balanced three-phase equipment;7 ^$ r$ H7 I; o& k0 n, ?6 u$ q, j! E
– household appliances, excluding equipment identified as class D;9 j3 H& G( p% ]* r2 A+ z4 B( A3 c' Q1 Y
– tools, excluding portable tools;" n& m6 p9 w$ A9 e0 Y7 n. q/ o Z
– dimmers for incandescent lamps;* O* i" |4 A8 e8 {
– audio equipment.5 N$ E2 R5 D) r: D" W- O* b- L
Equipment not specified in one of the three other classes shall be considered as class A
H4 ^+ Q5 ^0 i0 d6 mequipment.
$ ?+ y9 V5 `9 D- k! H. p5 V; \NOTE 1 Equipment that can be shown to have a significant effect on the supply system may be reclassified in a
5 B) d; Q0 ~- T4 k$ Q( U, O$ b& G1 Lfuture edition of the standard. Factors to be taken into account include:
3 [& J9 [5 G* U# T6 k) W+ K& P/ r1 B– number of pieces of equipment in use;
8 r+ [1 `, q: Q; J# q, U' f– duration of use;
2 h S1 r" c& y; u& v– simultaneity of use;% `0 {; e/ M0 N! o5 ?
– power consumption;! ?2 H' E) i5 |# B2 `
– harmonic spectrum, including phase.8 s/ ^7 |0 ]! g# a1 k* i1 h+ V# D
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Class B:
2 Z* J7 q2 J: Q" L0 Z– portable tools;
# M9 W- m) Z6 r) `) a2 O– arc welding equipment which is not professional equipment.
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! U1 v% ~3 b( r! Z( V) G, _+ r7 dClass C:
. g4 F6 q! R, a7 ~7 c7 ^– lighting equipment.
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Class D:
% U8 t5 r+ e) I* fEquipment having a specified power according to 6.2.2 less than or equal to 600 W, of the1 J( X1 V+ f1 ~; h" g9 ~
following types:
! w( }* Z+ k1 q) C8 h6 }: v U– personal computers and personal computer monitors;% z. O6 A) i: B0 k+ c7 q
– television receivers.
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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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