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节能灯6 n* y. c o. k6 ^
功率因数: 根据实际的情况选择 PF>0.6 及 PF>0.9" s/ s3 k/ i6 t G: W. m
EN 61347里面有关于功率因数的定义
; ~& B% W1 f$ }& B, ^' C5 O/ i+ P; Mcircuit power factor 1 T7 c; M d* _& x4 h$ W
power factor of the combination of lamp controlgear and the lamp or lamps for which the lamp - ~3 I; a; @4 ~% P$ ~4 @/ i) ?
controlgear is designed
0 j- A: F @; G& p# W# J3.15 ; J( Z. q2 y' Y" h6 ~* a- W) [) u
high power factor ballast
' J8 c% K' _0 F# R. n4 H) ~ballast having a circuit power factor of at least 0,85 (leading or lagging) ! Z. @0 z6 b& @
NOTE 1 The value 0,85 takes into account the distortion of the current waveform.
/ L t' W2 H' b6 M7 A# @6 _( bNOTE 2 For North America, a high power factor is defined as a power factor of at least 0,9. |
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