ballast factor การใช้

• The ballast factor can be obtained from the ballast manufacturer.
• It is given by the product of luminaire efficiency ( EFF ) times total rated lamp output in lumens ( TLL ) times ballast factor ( BF ), divided by the input power in watts ( IP ):
• In electrodeless lamps, the inclusion of the electrical losses, or " ballast factor ", in lumens per watt claimed can be particularly significant as conversion of electrical power to radio frequency ( RF ) power can be a highly inefficient process.