Tender For supply of lamp ballast for hpsv lamps as per is 15882:2009, is 15885,lamp ballast for hpsv lamps as per is 15882:2009, is 15885,lamp ballast for hpsv lamps as per is 15882:2009, is 15885,light emitting diode driver,light emitting diode driver,led batten with battery / invertor,led batten with battery / invertor
Tender For supply of high pressure sodium vapour lamps (hpsv lamps) as per is 9974 (part 1 and 2 ) (q3) , lamp ballast for hpsv lamps as per is 15882:2009, is 15885 (q3)
Tender For corrigendum : replacement installation testing and commissioning of inefficient 400w hpsv lamps with energy efficient 250w and 400w led luminaries at identified workshops at howrah works of bridge and roof co india ltd howrah west bengal