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本帖最后由 H-RH 于 2013-8-22 13:24 编辑
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5 Classification of equipment
5 B) z: |3 Z- q) z* mFor the purpose of harmonic current limitation, equipment is classified as follows:
( @" T: r2 C/ S$ c d/ M0 y: s; e9 YClass A:' Y2 l0 k& X0 X$ v* z4 h* X. v4 X
– balanced three-phase equipment;
+ Z" \) Z; @3 P* B, {) e– household appliances, excluding equipment identified as class D;- o* ~% N2 s% t) W
– tools, excluding portable tools;+ l% S/ y7 w# z1 B* L& Z- Q* O. T
– dimmers for incandescent lamps;: J$ ~# u( m# M- q
– audio equipment.
7 Z: P% b4 c* q7 D0 v, LEquipment not specified in one of the three other classes shall be considered as class A1 S4 U2 M$ c5 U, L; R5 z, I
equipment.
z: N% d% f+ c2 s7 O \ BNOTE 1 Equipment that can be shown to have a significant effect on the supply system may be reclassified in a
) y$ L! l" n( q# x6 L0 j- A# |future edition of the standard. Factors to be taken into account include:, [6 @8 g+ V! J: f; L
– number of pieces of equipment in use;
1 w o4 q0 ~- c4 p8 \' A% Q h) t– duration of use;: B" \7 F# f: k5 e
– simultaneity of use;
; m3 }. q' V0 ^/ C0 h– power consumption;) e- _5 R) S' K/ B
– harmonic spectrum, including phase.( d4 D. o$ X% c+ B3 @' P+ A6 ]' c
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Class B:2 M& d. |& v) n# J
– portable tools; ?) _) |6 W1 j' s) p
– arc welding equipment which is not professional equipment.
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Class C:/ \. ^7 T# X: @: J6 |, W
– lighting equipment.
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3 r. A! `+ H7 a6 D; m2 p. J$ }Class D:. C* l! Q ]/ u+ f7 E) R4 }
Equipment having a specified power according to 6.2.2 less than or equal to 600 W, of the
+ e2 N4 `$ F* W4 W9 N2 P0 C3 Hfollowing types:; I8 H9 y" ~4 M% q
– personal computers and personal computer monitors;
& d/ M) o! \/ j- I8 y: Y– television receivers.3 o- E* J! r$ k, q! e( N
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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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