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big power electric ballasts for two pcs 90w-155w uvc lamps 320w ballast
When it comes to ultraviolet sterilizers, the first thing that comes to mind is the cylinder, the lamp and the ballast. But do you know what role the ballast plays in the UV sterilizer, and what are the precautions for the selection of the ballast? Let's take a look~
What is a ballast
Ballasts, in short, are metal conductive coils. Can operate at low frequency (50–60 Hz) or high frequency (10–100 kHz). Because the heat loss of the coil is small, it is more useful than the resistance. It can play the role of current limiting and instantaneous high and high pressure.
There are two common types of ballasts: electronic ballasts and magnetic ballasts.
Electric device
Presented very early, the structure is relatively simple. Inductive ballasts use the inductive reactance and self-inductive electromotive force of the inductance to light the gas discharge lamp. The self-inductive electromotive force "breaks down" the gas of the lamp to start the lamp, and the inductance constrains the current of the lamp to prevent it from burning.
Advantages: low cost, stable and reliable, long duration.
Disadvantages: high power consumption, bulky, heavy, noisy
Electronic ballast
A converter that converts power frequency AC power into high-frequency AC power, uses high-frequency current to light lamps, and gas-discharged lamps can discharge and emit light without high-voltage ignition under the action of high-frequency current, and the light is on. The bright tube has no sparkle.
Advantages: Low energy consumption, high efficiency, no lamp voltage constraints, light weight, no noise, diversified functions (such as abnormal maintenance, surge voltage and current maintenance, temperature maintenance, etc.)
Disadvantages: higher cost, possible grid disturbance
The role of ballasts
There are mainly two aspects:
1. High pressure occurs, and the starting lamp tube breaks the rare gas in the lamp,
2. After the lamp starts to glow, it plays the role of ballast (current limiting), so that the lamp can work normally and stably.
Gas discharge lamps have high starting voltage and low discharge sustaining voltage. When the lamp is started at high voltage, the voltage drops and the current increases. If there is no restriction, the lamp current will continue to increase until the lamp is burned, so it is necessary to discharge A ballast that matches the type and specification of the lamp is connected in series to the lighting circuit of the lamp to supply a high starting voltage for the lamp to start, and to limit the lamp current to make it stable within the specified range. For some lamps, the ballast also It can heat (preheat) the electrodes at both ends of the lamp.
Ballasts can be complicated. Nobody replaces ballasts regularly. Inevitably, ballasts are needed when you go to change out the UV bulb at your machine's recommended intervals when you realize that the new bulb is not lighting up or is flickering. Instead of an easy UV bulb switch, your maintenance just became a potentially complicated electronic ballast search and installation.
Finding the right ballast is the first hurdle but not the only one. Even after you take receipt of the ballast, you have to figure
out how to wire them. Depending on the bulb type and the number of bulbs in your system, the wiring can change completely. It is not incredibly complicated, but more troublesome than it is worth for the majority of UV air or water purification system operators.
we want to take the guesswork out of ballast replacement. With this ballast, you are guaranteed to receive the right
ballast with the right wiring diagram. Any questions, and we'll be here every step along the way to help you out.