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How does a mercury vapor ballast work?

How does a mercury vapor ballast work?

The mercury vapor lamp works by creating an electric current to mercury vapor within a sealed glass jacket. The bulb is comprised of an inner tube, called the arc tube, and an outer jacket (or bulb). Using too small of a ballast will result in lower light output and can shorten the life of the bulb.

What is the role of capacitor in mercury Vapour lamp?

Metallised polypropylene film capacitors are designed to compensate the inductive idle current drawn by discharge lamps (fluorescent lamps, high-pressure mercury vapour lamps, high-pressure sodium vapour lamps and metal halide lamps with a ceramic discharge tube) in 50 Hz/60 Hz grids.

Will a mercury vapor lamp work with a metal halide ballast?

They do not manufacture “mercury vapor” ballasts anymore, so you would use a metal halide ballast and MH or MV lamp. On occasion, pairing a 175 MV lamp with a 150W MH ballast, will work, but will cause the ballast to overclock, and will greatly shorten the life of that ballast and/or lamp.

How does a mercury Vapour lamp work?

A mercury-vapor lamp is a gas-discharge lamp that uses an electric arc through vaporized mercury to produce light. They operate at an internal pressure of around one atmosphere and require special fixtures, as well as an electrical ballast.

How do you test a mercury vapor ballast?

Plug it into an outlet and take measurements of the voltage that goes between the capacitor lead that is black and the COM. This will tell you whether the lamp and the capacitor are good. The voltage should read 15 VAC, but it should ramp up to 130VAC within 5 to 10 minutes.

How do I know if my mercury vapor ballast is bad?

  1. Make sure the light fixture is plugged in and the circuit breaker switch is on.
  2. Replace the light bulb if it flickers, dims or changes colors drastically.
  3. Check the compatibility of your mercury vapor bulb and its ballast if the light shuts off before it is fully warmed up.
  4. Inspect the condition of the ballast.

What is the power factor of mercury vapour lamp?

Discharge lamps

Type of lamp (W) Power demand (W) at Current In (A)
PF corrected
131 154 0.69
Mercury vapour + metal halide (also called metal-iodide)
70 80.5 0.40

What is the use of capacitor in sodium vapour lamp?

What’s the difference between metal halide and mercury Vapour lights?

Mercury Vapor (MV) lamps are most frequently used outside for parking and security lighting. Metal Halide (MH) lamps provide the best color rendering of all HID lamps; color rendition is almost as full spectrum incandescents.

How can you tell the difference between metal halide and mercury vapor?

There is no difference between metal halide and multi vapor lamps because both names describe the same form of lamp. Metal halide or multi vapor lamps are a form of the light source that creates light via passing an electric arc through a gaseous mixture of mercury vapor and vapor of some metal halides.

Which electrode of mercury Vapour lamp is made up of?

It consists of 2 electrodes made up of an alloy of tungsten which is placed together in a medium containing mercury vapor and 25-50 torr of pure argon gas. These electrodes are enclosed in an elliptically shaped glass tube made up of silica.

How do you test a mercury vapor bulb?

What is wiring diagram for mercury vapor ballast?

The mercury vapor ballast wiring diagram is the blueprint for the ballast circuitry, including the input supply voltage and grounding methods. A ground connection must be made to all ballasts to avoid shock hazard, personal injury or damage to the luminaire or installation.

Do you need ground connection for mercury ballast?

A ground connection must be made to all ballasts to avoid shock hazard, personal injury or damage to the luminaire or installation. Mercury vapor Ballast installations and groundings should be made in accordance with all applicable government codes and regulations where required. HID lamp servicing requires close attention to safety. Working taken.

Which is the most popular metal halide ballast?

Their high heat tolerance and wide array of voltages and configurations make core and coil the most popular of metal halide ballasts.HID Ballast Wiring Diagrams for Metal Halide and High Pressure Sodium BallastsVenture Lighting’s Standard W Metal Halide Ballast Page