Skip to main content

17-27-127

cie

e-ILV

The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.

To search for another term please use  "Back to the list" to return to the main page or the e-ILV.

For the complete set of terms and definitions CIE S 017:2020 can be purchased from the CIE Webshop. Members of a CIE National Committee or Associate National Committee have access to a 66,7 % discount on the purchase price of the standard.

For advice on CIE Publications contact ciecb@cie.co.at. Please note that the CIE CB may not be able to assist with enquiries of technical nature.

fundamental power factor

λ1

ratio of the absolute value of the fundamental active power P1 to the fundamental apparent power S1

λ1= |P1| / S1

Note 1 to entry: The fundamental power factor is also given by:
λ1 =|cosφ1|

Note 2 to entry: The fundamental power factor only refers to fundamental quantities.

Note 3 to entry: The fundamental power factor is sometimes called displacement factor or displacement power factor.

Publication date: 2020-12
Copyright © CIE 2020. All Rights Reserverd.