NEMA LSD 23-2016 Recommended Practice - Lamp Seasoning for Fluorescent Dimming Systems.pdf

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1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA LSD 23-2016Recommended Practice -Lamp Seasoning for Fluorescent Dimming SystemsA NEMA Lighting Systems Division Document LSD 23-2016 Recommended PracticeLamp Seasoning for Fluorescent Dimming Systems Prepared by Lighting Sys

2、tems Division National Electrical Manufacturers Association 1300 North 17thStreet, Suite 900 Rosslyn, Virginia 22209 Approved: March 17, 2016 www.nema.org The requirements or guidelines presented in this document, a NEMA Lighting Systems Division white paper, are considered technically sound at the

3、time they are approved for publication. They are not a substitute for a product sellers or users own judgment with respect to the particular product discussed, and NEMA does not undertake to guarantee the performance of any individual manufacturers products by virtue of this document or guide. Thus,

4、 NEMA expressly disclaims any responsibility for damages arising from the use, application, or reliance by others on the information contained in these white papers, standards, or guidelines. The opinions expressed in this statement represent the consensus views of the member companies of the Lighti

5、ng Systems Division of the National Electrical Manufacturers Association. The members of the Lighting Systems Division manufacture traditional technology lamps and ballasts, light-emitting diodes (LEDs and OLEDs), LED lamps and modules, LED drivers and power supplies, luminaires, lighting controls a

6、nd management systems. NEMA LSD 23-2016 Page 2 2016 National Electrical Manufacturers Association. When new fluorescent lamps are installed in a dimming system, there is the possibility that some of the lamps will exhibit flicker or other visual instabilities. This condition can be caused by residua

7、l impurities that may be present in a new lamp as a result of normal manufacturing processes or affected by initial mercury distribution in a new lamp. Operation of the lamps at the ballasts maximum light output setting should clear up any impurities or allow time for the mercury to distribute, elim

8、inating any visual instability. An extensive study performed by NEMA of fluorescent dimming indicates that seasoning prior to dimming is not required to obtain rated lamp life. NEMA fluorescent lamp manufacturers recommend that whenever flicker or instability is present, or, to reduce possible flick

9、er or instability when new dimming systems are commissioned, lamps should be operated at the ballasts maximum light output setting overnight (approximately 12 hours). Overnight seasoning is particularly recommended for optimum initial performance or installations where dimming performance (tracking,

10、 stability) is considered critical. References: 1. Dimming Fluorescent Systems Life Experiment, M. Duffy, R. Erhardt, P. Hakkarainen, R. Hunt, T. Leyh, R. Nachtrieb, C. ORourke, T. Poehlman, R. Runkles, and H. Wolfman, Proceedings of the 11th International Symposium on the Science and Technology of

11、Light Sources, May 2007, Shanghai, China. 2. Dimming Fluorescent Systems Life Experiment, M. Duffy, R. Erhardt, P. Hakkarainen, R. Hunt, T. Leyh, R. Nachtrieb, C. ORourke, T. Poehlman, R. Runkles, and H. Wolfman, IESNA Annual Conference, November 2008, Savannah, GA. NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION 1300 NORTH 17TH STREET, SUITE 900 ROSSLYN. VA 22209www.NEMA.orgTO ORDER ADDITIONAL NEMA STANDARDS VISITWWW.GLOBAL.IHS.COM OR CALL 1-800-854-7179/1-303-397-79565612_0514TB