Line reactors are cost-effective way for the limitation of mains harmonics. The harmonics reduction capability is related to the reactor impedance. A higher impedance translate directly into lower harmonic currents, but of course into a larger component with a higher voltage drop - and vice versa.

4% impedance reactors like RWK 212 provide an excellent cost/benefit ratio and are particularly beneficiary in the most diverse motor drive application. 

RWK 212 Three-phase line reactor for motor drive applications

• Reduction of main harmonics
• Reduction of commutation notches
• Protection of motor drive electronics
• Limitation of inrush currents
• Improvement of true power factor
• Frequency: 50 to 60 Hz
• Harmonic mitigation: THiD appr. 40%
• Impedance: 4% @400 VAC, 50 Hz & rated current
• Motor power: 1.5 to 630 kW
• Rated current: 4 to 1100 A
• Voltage: < 500V