Choke EL 1/2x9-13 Helvar 4216001

• PURPOSE Designed to provide the ignition mode and limit the current of high-voltage discharge lamps when connected to an AC network with a frequency of 50Hz and a nominal voltage of 220V. • SCOPE OF APPLICATION Used for installation in luminaires. • PRINCIPLE OF OPERATION Connecting a choke into an AC circuit causes a phase shift between voltage and current. Chokes are usually specified by the cosine of the angle (cos φ), which is the value by which the current lags behind the voltage. It is also called the power factor. Active power is determined by the product of voltage, current, and the cosine of φ. • ADDITIONAL ACCESSORIES OR ACCESSORIES The standard kit includes the product itself