PR4000 9mt 4x1000W METAL HALIDE
TL073-11-02-03
01-02-2011
9.7 LAMP
The metal halide lamps used in the floodlights of the lighting tower allow to a greater lighting
system regarding the traditional halogen lamps and concur to an inferior energetic consumption
beyond to one duration much elevating of near 8000 hours.
The metal halide lamp is a high intensity discharge lamp based on the emission of electromagnetic
cancellation from part of a ionizated gas plasma. The ionization of the gas is obtained for means
of a discharge electrical worker (from which the name) through the gas.
The metal halide lamps derive from the high pressure sodium vapor lamps with the added of
thallium, Indian, dysprosium, holmium, cesium, thulium, which they improve the yield of the colors
of the sodium lamps, and give one temperature to their color much elevated (4000-5600) K. Their
chromatic yield renders them particularly adapted where there is the necessity of having a light
perfectly white. For being ignited they need of apposite igniters and injectors that produce
impulses of tension between 0,75 and 5 kV and for the attainment of the full light flux, in phase of
ignition, they are necessary few minutes.
In case of accidental putting out it is necessary to wait the cooling of the lamp (about 15
minutes) before a new ignition, because of the high tension that would be necessary for a
hot ignition.
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