The ballast is responsible for regulating the electrical current to the lamp, while the capacitor helps stabilize the voltage and improve lamp performance. The ignitor generates a high-voltage pulse to initially start the lamp, and the lamp socket connects the lamp to the power source.
"Series" compensation. of the mains (420-440 V) and a temperature range of -25+85° C, up to 100° C for some applications. It must also be considered that a switch-on voltage transients may occur on the capacitor; their size depends on the type of lamp and they must be considered when selecting the capacitor.
On these types of lamp the power factor (generally 0.5-0.6, and 0.3 for sodium vapour lamps) is always corrected using a parallel-connected capacitor. Tab. 3 High-pressure sodium vapour lamps. Table 2, 3, 4 and 5 show guideline values obtained from manufacturers of lamps and reactors for correction of the power factor to cos 0.9.
High pressure sodium ballast wiring diagrams typically include details about the ballast’s input and output voltages, as well as the connections to the lamp and other components. These diagrams help electricians and technicians understand how the ballast should be connected and ensure safe and reliable operation.
The high pressure sodium ballast contains components such as a capacitor, an igniter, and a high-reactance autotransformer (HX-HPF ballast) or high-reactance autotransformer and a reactor (HX-HPF + reactor ballast). These components work together to control the flow of electricity and maintain stable operation of the HPS lamp.
Compensation capacitors are divided into two type families (A and B) in accordance with IEC 61048 A2. • Type A capacitors are defined as: "Self-healing parallel capacitors; without an (overpressure) break-action mechanism in the event of failure". They are referred to as unsecured capacitors.