Figure 8.7. Types of halogen
lamps.
Linear halogen lamps have a slim
tubular bulb and recessed single-contact lamp caps (R7s), one at each end of the lamp. Wattages
range from 100 to 2000 watts.
Figure 8.8. Linear Halogen
Lamp.
Linear halogen lamps are also
available as Halogen-]R lamps with the bulb coated with a patented GE POW-IR film. This is an
infra-red reflecting material that directs heat back on to the filament and reduces the amount of
electrical energy required to produce a given level of light output. See Figure 8.9. Available in
225 and 375W ratings.
Figure 8.9. Halogen-IR linear
lamp.
Most mains voltage single-ended
halogen lamps also have an outer bulb. There are three main shapes:
HaloGlobe and HaloBTT can be
operated in any position, but Halo T is horizontal burning only. These lamps can be used in open
luminaires. |
