Choose lamps according to the efficiency of lamps

The efficiency of the lamp has a great effect on the energy saving. If the lamp efficiency is too low, it is difficult to remedy the energy saving effect by other methods. At present, our country has not yet announced the clear requirements for luminaire efficiency.

Luminaire efficiency requirements for different quality levels

Note: L/ h is the ratio of distance and E is the angle of light.

Class A: excellent "international advanced level". Good (domestic advanced level);

C level: general multi light bare industrial and mining lamps and lanterns limited value of the table of the median so Buddha; closed lamp limit value of 85%.