Standard Lighting Electronic Linear Fluorescent Ballast, 347V

Standard Electronic Linear Fluorescent Ballast. E240T12PRS347/N

Operates:
1 F30T12
2 F30T12
1 F34T12
2 F34T12
1 F40T12
2 F40T12

These ballasts use low voltage to preheat the filaments and a high open circuit voltage applied between the lamp electrodes to generate the arc. This technology lends itself to both magnetic and electronic ballasts. The temperature of the filament increases until the lamp starts. The filament voltage is continuously applied during the life of the lamp. With rapid start ballasts it is normal to have a small delay in starting as compared to instant start ballasts. Rapid start ballasts are recommended for use when you have frequent on and off switching. Typically, 15 000 to 20 000 on-off switch cycles can be expected before lamp failure.

A ballast is an integral component of most modern lighting systems. It is primarily designed to perform three critical tasks: Deliver the proper voltage to start or ignite the lamp(s), Regulate the electric current flowing through the lamp(s), and Compensate for variations in line voltage. The ballast must correspond exactly to the requirements of the lamp it is designed to operate in order to ensure optimal performance.