Knowledge Centre – Passive Strategies

Tubular Fluorescent Lamps (TFLs)

TFLs are typically low pressure mercury vapour gas discharge lamps that utilize fluorescence to produce light. The BEE Star labelling scheme covers 4 feet TFLs with wattages upto 40W. The scheme covers 6500K colour temperature for halo-phosphates and 6500K, 4000K & 2700K for tri-phosphate category. The Star Rating for TFLs is measured in Lumens per Watt. Higher the Lumens/Watt, higher the rating and vice versa.

The label on TFLs after photographic reduction to 16 mm height is be printed on the sleeve.

STAR RATING * ** *** **** *****
Lumens per Watt at 0100 hrs of use <61 >=61 & <67 >=67 & <86 >=86 & <92 >=92
Lumens per Watt at 2000 hrs of use <52 >=52 & <57 >=57 & <77 >=77 & <83 >=83
Lumens per Watt at 3500 hrs of use <49 >=49 & <54 >=54 & <73 >=73 & <78 >=78