High Pressure Sodium Hps Street Lights

Sunlite 03620 su lu150 med high pressure sodium light bulb 150 watts ed17 med medium base e26 ansi code s55 15000 lumen 20000 life hours clear 2100k 4 3 out of 5 stars 284 13 77 13.

High pressure sodium hps street lights.

Philips 250 watt ed18 high pressure sodium high intensity discharge hid light bulb 1 bulb model 140979 24 00 24 00. We also offer special conversion metal halide bulbs that can be used with fixtures intended for high pressure sodium light bulbs. Low pressure lps and high pressure hps these lamps are mostly used for street lighting as well as industrial uses. High pressure sodium hps lights are commonly used for outdoor application like parking lot lighting street lights etc.

Operating hps lamps at less than full output however produces color shift changes in cri and reduced lamp efficacy. High pressure sodium vapor hps lights are a specific type of gas discharge light also known as a high intensity discharge hid or arc light. Typically these lights are used on sides of industrial buildings and in some street lamps. They emit bright yellow light.

The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. Sodium bulbs can last up to 20 000 hours. 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. 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.

There are two kinds of sodium lights. High pressure sodium vapor hps lights similar to lps lights are a specific type of gas discharge light also known as a high intensity discharge hid or arc light. Hps fixtures quickly picked up speed and by 1970 many parking lot lights and street lights were adopting the new lighting technology. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out.

The hps light fixture was developed by general electric and made its debut in 1964. As indicated by the name high pressure sodium vapor lights. Sodium lamps were first produced commercially by philips in holland in 1932. Dimming is limited to about 50 of full light output.

High pressure sodium lights are used for illuminating large outdoor areas. High pressure sodium applications hps lamps unlike most metal halides do not require enclosure except to prevent moisture from accumulating on the lamp.