1 tuning filter cabinet is designed to compensate to the power grid generated harmonics for power factor
2 each section of the filter tuning cabinet composed by a capacitor and a reactor in series, capacitors and reactors form a series , the resonant frequency is lower than the lowest harmonic present in the grid . It is usually the fifth harmonic(250Hz).

3 it is lower than the resonant frequency of the resonant circuit, such as fundamental frequency (50Hz), this time the tuning filter is capacitive, issue reactive power on the grid . Above the tuning frequency, the tuning filter is inductive, which means it would not amplify other harmonic including 5th, 7th and 11th harmonics. Tuning filter can also absorb part of the low-order harmonics in grid.

4 Similar to the conventional capacitor group ,Each segment of tuning filter control by the automatic power factor controller according to the need for reactive power

Technical parameters:

System voltage: 220 ~ 750V

Rated Capacity: 120 ~ 450KVAR / cabinet

Resonant frequency: 130Hz, 141Hz, 189Hz, 204Hz other frequencies available on request.

Install location: indoor

Temperature range:minimum 0 ℃, the highest 45 ℃, maximum of 24-hour average temperature is +35 ℃,annual average maximum +25 ℃.

Protection: IP20

Standard: IEC 60831 EN 60439-1

Color: light gray RAL7032

Application Scope: electric power system with stable load change , small harmonic content