High Pressure Sodium Lamp Ballast Circuit

A very first appearance at a circuit diagram could be confusing however if you could review a subway map you can check out schematics.

High pressure sodium lamp ballast circuit.

Note that due to the hps ballast s electronic starting circuit warm up and restrike periods are much shorter than those of metal halide lamps. A high pressure sodium ballast is responsible for regulating the pressure in light fixtures that use high pressure sodium gas to produce the light. This is the main difficulty of producing high pressure sodium lamp. The xenon gas which is easily ionized facilitates striking the arc when.

They emit bright yellow light. It is very difficult to get any material which is free from corrosion in presence of sodium vapor in high temperature and pressure. High pressure sodium lights are used for illuminating large outdoor areas. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out.

A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. They are also commonly found in an indoor garden setting. Ignitors automatically remove themselves from the circuit once the arc is stricken by use of a bimetal switch. The lamp is an improvement over the lps lamp in that it has more acceptable color with the great efficiency of the sodium lamp.

Typically these lights are used on sides of industrial buildings and in some street lamps. Shop ballast magnetic core and coil quad high pressure sodium cwa circuit type 400w 1 lamp by ge lighting ges400mltaa4 5 at graybar your trusted resource for hid electronic and electromagnetic ballasts and other ge lighting products. They are used for things such as security lighting. Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used.

Two varieties of such lamps exist. In a high pressure sodium lamp a compact arc tube contains a mixture of xenon sodium and mercury. There is an ignitor built into the ballast which sends a pulse of high voltage energy through the arc. Sodium bulbs can last up to 20 000 hours.

In 1959 the development of polycrystalline alumina pca opened a new path to introduce the high pressure sodium vapor lamp as this material is very rarely affected by high pressure and. Since high pressure sodium lamps have mercury and sodium inside it needs to utilize a high voltage pulse to ignite the lamp which the ignitor provides. These types of lights are commonly found outside.