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节能灯5 K" y) N, X v) h, C9 o
功率因数: 根据实际的情况选择 PF>0.6 及 PF>0.90 _5 ^& L0 j9 m) Y- w/ M4 R4 N
EN 61347里面有关于功率因数的定义. U; O: r3 R7 L7 j# b! n
circuit power factor
8 {) N: [ q" h& S5 bpower factor of the combination of lamp controlgear and the lamp or lamps for which the lamp 3 j0 S9 m* t" P, s& }6 Q; S4 A$ D
controlgear is designed , z4 h0 i8 ?2 Q- W& a
3.15
2 s `! K7 T! Q) `- F4 ghigh power factor ballast % \" |; s0 y! e# G, ?+ t2 l+ U
ballast having a circuit power factor of at least 0,85 (leading or lagging)
9 d; G# }: ]8 G7 HNOTE 1 The value 0,85 takes into account the distortion of the current waveform.
, z/ D8 v+ {9 V/ i' I' INOTE 2 For North America, a high power factor is defined as a power factor of at least 0,9. |
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