Technical standards

Standards Time blog / Power factor

CEC approves proposed amendments to BCS efficiency requirements

The California Energy Commission has finalised its efficiency specifications for Battery Charging Systems.  Key items include:

  • Efficiency requirements for a typical mobile device BCS are twofold: 24hr charge and maintenance energy must not exceed (12 + 1.6Eb) Wh, and the sum of maintenance mode and no-battery mode power must not exceed (1 + 0.0021Eb) W, where Eb = Battery capacity in Wh;
  • adoption of the DoE test method, approved in June 2011, for BCS with rated input power ≤ 2 kW; and
  • confirmation that consumer products must comply by Feb 2013, whereas larger capacity ≥ 20 Wh systems have until Jan 2014 for compliance.

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Energy Star publishes new lamps specification version 1.0

Energy Star has now published version 1.0 of a new standard to replace both ‘CFLs’ and ‘Integral LED Lamps’. Key points for LED drivers include:

  • power factor > 0.7 for PIN > 5 W; lamps with PIN ≤ 5 W are PF-exempt;
  • efficacy ≥ 55 lm/W for PIN < 10 W and efficacy ≥ 60 lm/W for PIN ≥ 10 W;
  • lamp lifetime ≥ 10,000 hrs and warranty ≥ 2 years, based on usage of ≥ 3 hours per day.

A definition, method of measurement and compatibility metric for dimmable lamps are also all in development.

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Energy Star proposes new Lamps specification

Energy Star is proposing a new standard to replace those for CFLs (V4.2) and Integral LED Lamps (V1.3).  The new standard is likely to consider possible changes to the following current requirements:

  • power factor >0.7 for PIN >5 W;
  • efficacy >50 lm/W for PIN <10 W or >55 lm/W for PIN ≥10 W;
  • and warranty ≥3 years (note that the warranty is already ≥ 5 years for Luminaires).

More information?