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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
7 Q9 j+ p h* ?+ _+ AFor the purpose of harmonic current limitation, equipment is classified as follows:
4 Q/ P4 t' B8 Q' V6 t. }" SClass A:; t4 e# G4 \) l" o+ U
– balanced three-phase equipment;$ g3 Y3 ], ^4 K. j$ f5 C
– household appliances, excluding equipment identified as class D;/ b% b- B1 Z6 C! m+ T. p6 g3 \
– tools, excluding portable tools;# @0 D8 q; D% W* T& t: B
– dimmers for incandescent lamps;' @$ _2 i6 E: V% ^# m
– audio equipment.
8 A* m# X) r1 A/ `, U& Z4 h# qEquipment not specified in one of the three other classes shall be considered as class A
& { {& E& t, X1 |8 t. Cequipment.
7 p% ~+ e1 L9 HNOTE 1 Equipment that can be shown to have a significant effect on the supply system may be reclassified in a
9 O% J. }+ v7 q! [' G9 u5 R9 nfuture edition of the standard. Factors to be taken into account include:/ L# h, }, [+ _
– number of pieces of equipment in use;- j& l. y, j! p t0 H6 _' C0 ^
– duration of use;
* E8 I$ h* U+ }2 {+ ^' F– simultaneity of use;
0 [% _1 e( x9 x3 {– power consumption;
& V# G( _2 \% ?7 a: o8 w5 O, u– harmonic spectrum, including phase.
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& r a9 X, \, X- a/ X7 A' a, c' BClass B:% E2 F/ L7 V; z5 X' g/ T9 m/ S
– portable tools;
: d" A, @) f9 G8 B– arc welding equipment which is not professional equipment.( M& C1 @' @3 A3 y; H" F% s, ~
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Class C:
' V0 i# E/ t1 {" u g o/ q+ P– lighting equipment.
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; o7 J4 y( ?) y' ^% ^% P8 M Q" w+ IClass D:
! K7 Z4 X+ U3 Z8 [+ QEquipment having a specified power according to 6.2.2 less than or equal to 600 W, of the
r- X+ Z' B8 P; Q1 [' U: Y) r) tfollowing types:
# N& I5 v5 J" K– personal computers and personal computer monitors;$ a! K) ^. ?8 u9 q) o3 n
– 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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