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,high pressure sodium vapour lamps (hpsv lamps) as per is 9974 (part 1 and 2 ),high pressure sodium vapour lamps (hpsv lamps) as per is 9974 (part 1 and 2 ),high pressure sodium vapour lamps (hpsv lamps) as per is 9974 (part 1 and 2 ),lamp starter (ignitors - starting device) for hpsv lamps, metal halide lamps) as per is 12449 (part 1 and part 2),lamp starter (ignitors - starting device) for hpsv lamps, metal halide lamps) as per is 12449 (part 1 and part 2),lamp starter (ignitors - starting device) for hpsv lamps, metal halide lamps) as per is 12449 (part 1 and part 2)