Why not dimmable ballast / dimming ballast ?

Low cost Energy saving systems for existing sodium lamp.

Why not electronic dimmable ballast?

Now a day’s people more concerned to reduce CO2 and reduce the Carbon Footprint within the Lighting Industry. We have discussed a few ways of doing this. One of the options is to introduce an energy management system that would control and monitor the street lighting. The important parts of this process is to have electronic ballast that is available to be integrated into this system. The capital outlay to install cost of these systems is very high. The savings are as equally to 7 to 10 % for higher wattage lamp and 20 to 30 % in lower wattage lamp. And overall the reliability of electronics ballast is very less compare to normal switchgear. Replacement cost will be increased by electronic ballast cost and its fitting/replacement mounting cost and scraping old ballasts.

Why centralized dimming system?

There is a very large quantity of Street Lights are installed which are still using Conventional Control Gear. If we use centralized dimming systems then there will be need to change any old control gears and ballast. If the systems incorporate with common power down mode. and optionally with voltage correction systems If where the installation In night time the streetlight voltage high up to 270 volt so it can be correct it to 220 to 240 volts which save around 10 % and also its increase the life of luminaries and by power down time at night 11 PM to early morning which saves around in range of 40 to 50 %. Total saving will be around 30 to 40 %. (User has to compromise in flux level reduction at low traffic hours.)