Solution of problems with short lifetime of airfield halogen lamps

This reason to carry out this investigation was a complaint from international airport about increased maintenance cost and insufficient reliability of runway lighting systems. The exhaustive investigation of overall lighting installation was carried out, which comprises lighting parameters, mechanical parameters and electrical parameters. The possible causes of luminous flux drop and significantly lowered mean time between failures have been explained. These causes were presented as observed mechanical and electrical changes of incandescent lamp filaments, for current source power supply, which is utilized in runway lighting system.