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what is the critical thing to be cared about making a lighting fixture in cold freezer warehouse?

I am designing a lighting fixtures or luminaires to be used in cold and humid enviroment. The bulb we should use is "flourescant 1X58W around 1,5 m length" and the temperature is -40 degrees celcius. The problem is in this temperature, ballasts and flourescent tube insisting to not to work. If somebody has any of this kind of design I can share it.

Public Comments

  1. That the power is off.
  2. The inventory kept in a cold freezing warehouse may be very costly and easily spoiled by broken glass if light bulbs shatter (for whatever cause including physical damage). I'd suggest that the lighting fixture have protection (heavy glass enclosure?) to avoid problems. That may also hold in heat and drive out excess moisture and condensation. Also you may be able to select a light bulb with extra long life to reduce changeout. That could include for example stepping down the AC voltage enough to increase bulb life without losing too much illumination. For example, if the night lights on a car's instrument panel (or lights in a house on a dimmer) are operated at less than full power they may last almost forever. Of course many of the newer long life small (flourescent?) light bulbs must not be used will a dimmer or at reduced voltage. Good luck.
  3. In addition to Kes said, select a weather proof housing (to hold the lamp) preventing moisture build up on the bulb
  4. THE FIXTURES YOU ARE USING WILL WORK PEFECTLY! create a small cubby room and call it the lighting closet. house your ballasts in this room at 75-80 degrees ballasts and lights are seperate making startup easy and troublshooting problems easier. extra wiring involved but very profitable in the long term blow a ballast? go to the comfort of the lighting closet and change it! your fixtures dont care about temperature your ballast needs warmth to operate correctly