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Lamp rerating

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Lamp rerating is modelling the predicted properties of a filament lamp when running the lamp at a voltage other than its specified rating, using a power law function of voltage. The following equations can be used to estimate the new operating point. The exact value of the exponent parameters will typically vary slightly with the particular lamp design.

Va = Applied voltage
Vd = Design voltage
  • Rerated current = (Va/Vd) × current at design voltage
  • Rerated luminous intensity = (Va/Vd) × Luminous intensity at design voltage
  • Rerated life = (Va/Vd) × Life at design voltage
  • Rerated electrical power = (Va/Vd) × Electrical power at design voltage
  • Rerated color temperature = (Va/Vd) × Color temperature at design voltage

See also

References

  1. ^ Welch Allyn (2007). "Miniature halogen lamps; lamp electrical characteristics" (PDF). Archived from the original (PDF) on 2012-03-25. Retrieved 2011-09-06.
  2. ^ Fink, Donald G.; H. Wayne Beaty (1978). Standard Handbook for Electrical Engineers, Eleventh Edition. New York: McGraw-Hill. pp. 22–8. ISBN 0-07-020974-X.


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