How does HPSV lamp work?
High voltage energy is sent through ignitor through the arc tube. Firstly, the pulse starts an arc through the xenon gas which makes the lamp turns sky blue due to xenon lighting up. After that the arc then heats up the mercury and the mercury vapor then lights, giving the lamp a bluish color.
How do you wire sodium vapour?
With this connection will connect the input. Source with the first terminal of the ballast. Then we will connect the common terminal of the ballast to x3 terminal of the igniter.
How do I check the ignitor on my HPSV lamp?
Metal halide lamps do not require an ignitor to start, so the test for a failed ignitor for an HPS lamp is to screw in a metal halide bulb of the same wattage and see if it starts. If the MH lamp starts and a new HPS lamp does not start, the ignitor probably needs to be replaced.
What is HPSV lamp?
High-pressure sodium lamps (also known as HPS Lamps or HPS lights) are a type of sodium lamp that is widely used in industrial lighting and many public outdoor areas. They are commonly used in public parking lots, roadways, and other security areas.
Which gas is used in HPSV lamp?
Xenon at a low pressure is used as a “starter gas” in the HPS lamp.
What are the two types of sodium lamp?
There are two kinds of sodium lights: Low Pressure (LPS) and High Pressure (HPS). These lamps are mostly used for street lighting as well as industrial uses. The lamp works by creating an electric arc through vaporized sodium metal.
Why choke is used in sodium Vapour lamp?
So in a conventional fluorescent lamp the role of the choke is to initiate the electrical discharge process. Once the discharge is struck it can be sustained through the drop in electrical resistance of the column.
Why capacitor is used in sodium Vapour lamp?
Why capacitor is used in sodium Vapour lamps? The Metalized polypropylene film capacitor is used to compensate for the inductive idle current which is drawn by the lamp.
How can you tell if a high pressure sodium bulb is bad?
The most common problem with a high pressure sodium light is the bulb. The first course of action is to simply change the bulb. Observe the interior gas tube for any signs of discoloration. If the tube is black, the bulb is definitely burned out.
In which lamp circuit ignitor is used?
Metal-Halide lamps
Igniters are used for Metal-Halide lamps because they operate at a pressure between 4 and 20 atmospheres so require special fixtures to operate safely, as well as an electrical ballast and a special igniter to ensure a reliable and instantaneous lamp ignition.
Can I replace a sodium bulb with LED?
In fact, they’re roughly as efficient as LEDs in terms of their light output for each watt of energy used. LEDs, however, are better able to control their light, which is why a lower-watt LED can replace a higher-watt high pressure sodium bulb.
Why sodium is used in street lights?
It is most visible in street lighting. Sodium-vapour lamps are good for night-time illumination because of their high efficiency and because the light they produce penetrates mist and fog particularly well.
What is wavelength of sodium light?
589 nm
The wavelength of sodium light in air is 589 nm.
What is the role of choke?
A choke, also known as an inductor, is used to block higher-frequency while passing direct current (DC) and lower-frequencies of alternating current (AC) in an electrical circuit. The name comes from blocking, or “choking”, high frequencies while passing low frequencies.
What is the purpose of using a choke?
Its purpose is to restrict the flow of air, thereby enriching the fuel-air mixture while starting the engine.
What is the function of capacitor for lamp?
A capacitor is used to improve the power factor of the lamp. To prevent the lamp from taking too much current a fluorescent lamp has to have a choke, which has magnetic inductance. As a result large installations of such lamps suffer a poor power factor and resultant voltage drop.
Which gas is used in sodium Vapour lamp?
Low-pressure sodium (LPS) lamps have a borosilicate glass gas discharge tube (arc tube) containing solid sodium and a small amount of neon and argon gas in a Penning mixture to start the gas discharge.
Can I replace a high pressure sodium bulb with LED?
How long does a high pressure sodium bulb last?
High Pressure Sodium lights maintain their luminescence fairly well with 90% still available halfway through their lifespan (around 12,000 hours). HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours).
What does an igniter do in a light?
Venture Lighting, Ballast Technical Section – Ignitors. HID lamp ignitors provide a brief, high voltage pulse or pulse train to breakdown the gas between the electrodes of an arc lamp.
How do you convert a high pressure sodium bulb to LED?
HOW TO RETROFIT a metal halide or high pressure sodium light TO LED!!
How long do sodium bulbs last?
What are the 2 kinds of sodium light?
There are two kinds of sodium lights: Low Pressure (LPS) and High Pressure (HPS). These lamps are mostly used for street lighting as well as industrial uses. The lamp works by creating an electric arc through vaporized sodium metal. Other materials and gases are used to help start the lamp or control its color.
What gas is used in street lights?
The gas used in street light is Sodium (in vapor form). In street lights, sodium is used in the excited state that helps in producing light. Sodium is used as a sodium vapor lamp. Sometimes, mercury-vapor lamps are also used in street lights.
Why sodium lines are called D-lines?
The lines were originally observed as dark features (absorption lines) in the optical spectrum of the Sun. He labeled the lines with letters from A to K. A strong doublet at 589.0 nm and 589.6 nm is observed in the Sodium emission spectrum, identifying the D-lines as due to Sodium in the sun.