Our Ask An Expert knowledge base contains answers to questions from designers like you. Browse the knowledge base by category or search key words. Not seeing what you need? Ask An Expert a question of your own.
I am technical staff in facilities services for a major university in Texas and would be an end user of LED lighting. I'm also involved with developing Construction Standards for lighting. As there are performance test standards for LED lights such at LM79, TM21, etc., I've not been able to find a performance standard for the driver. Is there one being developed that could eventually be referenced to. I have some basic performance information about drivers, but it would be convenient to use one that industry is adopting.
There are a couple standards depending on what you are looking to accomplish. One safety related standard is the UL8750
The California Energy Commission recently approved a “California Quality” LED Specification that will be used for electric utility LED rebate programs.
A few highlights of the specification are as follows:
• The CEC kept the power factor of > 0.9 for all LEDs, while ENERGY STAR would have a power factor of > 0.7 for residential applications and > 0.9 for commercial grade.
• With regard to several criteria (Elevated temperature light output, lumen maintenance, rapid cycle stress test, electrical safety, start time, transient protection) the draft specification referred to the requirements in ENERGY STAR draft 2, but the final specification has no requirement.
• ENERGY STAR draft 2 provides that all lamps marketed as dimmable must meet specified levels of dimming, flicker, and audible noise; but leaves the exact levels to be determined in a future draft.
The California specification states that “All California Quality LED lamps shall be capable of continuous dimming, flicker and noise free, from 10‐100 percent. For these lamps, the specification uses the dimmability requirements in the ENERGY STAR Product Specification for Lamps, Version 1.0, DRAFT 2. The test procedures (e.g., for flicker and noise) used in the California Specification will update in line with future revisions to ENERGY STAR, but the requirement for dimming down to 10% will not update.”
Final specification - Appendix A of this link includes a side-by-side comparison of the California specification and ENERGY STAR draft 2.
Answered by: ON Semiconductor
2013-04-03 16:45:10.119