The National Electrical Manufacturers Association (NEMA) published
NEMA BL 3-2013 Dimming Ballast Energy Performance.
This standard provides a methodology for applying existing test methods for program start ballasts to fluorescent dimming ballasts. It also provides a method to calculate ballast luminous efficiency (BLE) for fluorescent dimming ballasts.
Information for proper lamp and ballast compatibility for reliable long term dimming system operation can be found in
NEMA LL 9-2011 Dimming of T8 Fluorescent Lighting
Systems. Additionally, the Department of Energy (DOE) has developed uniform requirements for programmed start ballasts in the course of ballast rulemaking. BL 3 combines the new 2014 DOE standard for programmed start ballasts with the lamp compatibility aspects of the LL 9 document. The resulting proposal will suggest dimming ballasts be evaluated to BLE performance metrics similar to the programmed start levels, but adjusted to provide for some additional losses due to the added control complexity and also for the heating power lost in the lamp cathodes.
NEMA BL 3-2013 Dimming Ballast Energy Performance
may be purchased in electronic or hardcopy format for $32 on the NEMA website.
National Electrical Manufacturers Association (NEMA) represents nearly
400 electrical, medical imaging, and radiation therapy manufacturers at
the forefront of electrical safety, reliability, resilience, efficiency,
and energy security. Our combined industries account for more than
400,000 American jobs and more than 7,000 facilities across the U.S.
Domestic production exceeds $117 billion per year.