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本帖最后由 H-RH 于 2013-8-22 13:24 编辑 . O% H0 @( f9 G* ^( V+ x- B/ J
& R; K+ g* _2 C8 \6 c; Q5 Classification of equipment
) H d: A- @1 \& i7 DFor the purpose of harmonic current limitation, equipment is classified as follows:" H3 R, J* ?) \8 _0 I# q( G
Class A:
4 p. s! C4 i8 |' y b1 | Z. y– balanced three-phase equipment;
" V$ r, `! u3 i: {) ^– household appliances, excluding equipment identified as class D;% g8 V; a2 W( x0 R: w$ R# j0 t
– tools, excluding portable tools; P L! c4 W/ h7 u( Y3 k. F+ ~
– dimmers for incandescent lamps;9 Q4 W# j2 y. Q' k5 r
– audio equipment.: f, i n) V* ~2 k% `" D
Equipment not specified in one of the three other classes shall be considered as class A# y1 I: l8 f2 ~! o5 B8 v
equipment.4 Q C% V# \+ w& _' [" b% C6 T6 z2 f
NOTE 1 Equipment that can be shown to have a significant effect on the supply system may be reclassified in a6 Z/ J. T9 A$ ^' [: ~; v3 e, U9 ?2 O7 ]
future edition of the standard. Factors to be taken into account include:/ K' z$ k$ T* w. L
– number of pieces of equipment in use;
7 i* Z- C4 E+ u7 s- R( d/ V% I' d n– duration of use;+ G. Y( K$ t7 h& O
– simultaneity of use;$ b; k/ m. N8 I( S: t8 p1 l; o$ i
– power consumption;- |, t5 V- R9 v7 L' v
– harmonic spectrum, including phase.1 o [( _0 v* x7 e& J9 m
3 ]+ c) [) ^; A$ y; d) x+ qClass B:
: t% ]! C; i4 q0 b7 p/ B– portable tools;$ M3 K3 s# r! L6 l
– arc welding equipment which is not professional equipment.* s$ J/ s: }8 k$ _: s! Z
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Class C:! E5 r) B& G* l. }/ G0 b5 n# n# v; u
– lighting equipment.
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Class D:2 p, ~( V0 l4 M0 E
Equipment having a specified power according to 6.2.2 less than or equal to 600 W, of the
) E1 T# {0 R* A5 J% N' lfollowing types:
7 R; r! j" Y0 H D$ |( l– personal computers and personal computer monitors;
) {, d$ L3 R7 A7 t( T8 e– 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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