With the continuous expansion of the application field of ultraviolet germicidal lamps, in order to maximize the use of ultraviolet lamps, the current ultraviolet lamps are equipped with special electronic ballasts, which greatly improves the intensity output of ultraviolet lamps. Do you know the role of electronic ballasts in UV germicidal lamps? Are there any considerations for the selection of ballasts?
1. What is a UV germicidal lamp ballast?
Ballasts,in short, they are metal conductive coils. It can work at low frequency or high frequency. Because the heat loss of the coil is small, it is more effective than the resistance. It can play the role of limiting current and generating instantaneous high pressure.
2. The role of ultraviolet germicidal lamp ballast
1) High pressure is generated, and the ignition tube breaks the rare gas inside the lamp.
2) After the germicidal lamp starts to glow, it acts as a 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 through 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 matching the type and specification of the lamp is connected in series in the lighting circuit of the lamp to provide a high starting voltage for starting the lamp, and limit the lamp current to stabilize it within the specified range.
3. Precautions for using ultraviolet germicidal lamp ballast
1)Instant Start V.S. Delay Start
When matching low-power lamps, the impact is not very obvious, but when matching high-power ultraviolet germicidal lamps (such as 120W, 150W and 320W, etc.), the instantaneous start has a great impact on the service life of the ultraviolet lamp. This is because when the ultraviolet germicidal lamp starts, the required starting current is very large, which is easy to break down the lamp tube, and the delayed start reduces the instantaneous pressure through energy storage, which has a better protection effect on the lamp tube.
2)Choose the appropriate model
Be sure to select the appropriate model. Since the core function of the ballast is to protect the ultraviolet germicidal lamp and prolong the service life. If the ballast selected does not match the lamp parameters, both parties are victims.