Nmercury vapor lamp pdf files

Since sodium vapor fixtures are more energy efficient than mercury vapor, a smaller lamp size may provide equal or greater lumen output per kilowatthour of electricity, resulting in a net savings in the monthly energy cost. Mercury vapor lamps are bright, longlasting light sources that are often used to light large areas such as streets, gyms, sports arenas, banks, or stores. Standard mercury hid lamps operate on existing mercury ballast. Various types of ballasts for mercury lamps are described on pages 11 and 12. Less than 1% of the mercury in a mercury vapor lamp is in vapor form and will be released if a lamp is accidentally broken. Self ballasted mercury hid lamps contain an internal ballast that allows it to operate in an incandescent socket. Halogen lamps run hot for the wattage so be careful when setting them up. Mercury vapor lamps, however, may not be good for your health. The small diagonal cylinder at the bottom of the arc tube is a resistor which supplies current to the starter electrode. The bulbs have an inner quartz tube containing the mercury vapor discharge. Eye lighting still offers a full line of mercury replacement lamps. This means its resistance decreases as the current through the tube increases. Mercury lamps are becoming harder and harder to find. Using a mercury vapor lamp with a ballast that was made for a higher wattage bulb might damage it or cause it to explode.

Mercury vapor lamps benefits, health hazards and pollution. Engineering high intensity discharge bulletin mercury lamps. The mercury vapor lamp is a negative resistance device. Types of mercury containing lamps 12 compact fluorescent lamps 12. They will require optional light and heat sources such as halogen lamps. Removing the broken lamp debris and ventilating the area for 15 minutes if possible is recommended. The ballast is designed to be used with a specific size, or wattage, of bulb.