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本帖最后由 H-RH 于 2013-8-22 13:24 编辑 6 T5 R4 X) M$ z; w6 C4 p' c* d" y
' a' \# c: [ A7 G; e: Q5 Classification of equipment/ o; y1 a, _. l* Z2 q! |$ M- s
For the purpose of harmonic current limitation, equipment is classified as follows:, K8 }- G* e; ?: u+ X/ g
Class A:6 p7 |% p0 ~7 n# ~4 {6 p5 X
– balanced three-phase equipment;! y+ e+ ]" [1 q0 a8 J' V
– household appliances, excluding equipment identified as class D; N* z" u5 h- b9 ]
– tools, excluding portable tools;
( R# a' E* c: s' U* o– dimmers for incandescent lamps;
* e- s. J2 v! I* F9 A+ o) N– audio equipment.
( Q+ \) X7 X4 kEquipment not specified in one of the three other classes shall be considered as class A
5 S/ K# P3 T) u# N' j2 _equipment.
' k0 z5 ?/ s* bNOTE 1 Equipment that can be shown to have a significant effect on the supply system may be reclassified in a
- }' Q) d* R- ?: G; e; Jfuture edition of the standard. Factors to be taken into account include:: z: x J7 G( O) C j* g$ D
– number of pieces of equipment in use;
3 S: X) k" M9 w3 Q– duration of use;' a8 j0 g [5 ~( k& T7 a9 K8 z" T
– simultaneity of use;
) w8 u( B. ^: n4 U' q8 O8 `– power consumption;- A2 G% S# Y8 {" w& d" ^$ E/ O4 I: i
– harmonic spectrum, including phase.
* U3 u" ^! ~4 W/ c
* O( w& r/ s5 [Class B:& C4 Y$ x0 Z; D }2 L/ i. F
– portable tools; B, J5 Q! N# `0 s: `) l2 E1 }7 ^
– arc welding equipment which is not professional equipment.
$ ?9 { h. N8 m, q: a2 [1 B/ u8 B7 m8 I
# o! y, X8 p* \5 qClass C:7 x6 n& r- c+ N1 ^+ Q T: R. M$ }
– lighting equipment.
* u+ J* P2 `* B1 A8 u$ c/ b
$ { F+ f" ?# J4 @' E5 L( G1 Q1 LClass D:; M! `9 W+ i! o* g8 E
Equipment having a specified power according to 6.2.2 less than or equal to 600 W, of the
X- T% j5 N4 X3 M" z+ Yfollowing types:
6 d& t/ I4 g# O4 h* r– personal computers and personal computer monitors;
) S0 R' i2 A! ~7 h, t! ]. |1 x– 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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