Single/ Three Phase Type AC Line Choke is used between variable speed drives and utility and is used to dampen the harmonic content and rush of the current drawn by the motor drive. The Choke is used to protect the drive from harmful line disturbances reduces nuisance over voltage tripping of the drive due to transient voltage spikes and power line notches. The Choke improves input line current balance on the drive input when the line voltage is unbalanced and offers in-rush protection to input rectifiers caused by sudden power line surges or sudden changes in the motor load. The Single/ Three Phase Type AC Line Choke offers reduction of input line current harmonics by reducing the current form factor thereby improving power factor and reduces ripple current in the dc bus capacitor bank thus extending their life.
