'Ballast lumen factor' presentation slideshows

Example FTL and Ballast Specs for EE Procurement

Example FTL and Ballast Specs for EE Procurement. Satish Kumar, Ph.D. Lawrence Berkeley National Laboratory Energy Efficient Procurement Workshop Mumbai, India September 20, 2005. EE Specifications for FTLs in China. Lumen maintenance must be no less than 80% after 2000 hours of usage.

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