PASSIVE FILTER SYSTEMS
 

 







BARON Reactor based Passive Harmonic Filters Systems are suitable for suppressing Harmonics generated by destructive loads
High Harmonic can cause

Increased System Losses

High Frequency Currents

Malfunction of relays and circuit breakers

Fuse Operation

Capacitor failures

Motor and Transformer Overheating

Also Maintains healthy Power Factor where V-THD & I-THD level is above IEEE / IEC Guidelines.

Classification And Selection
The Harmonic Filter Systems are classified depending on the Tuning Frequency of the Filter Reactor & Capacitor Circuit and the selection of Harmonic Filter type depends on the level & order of Harmonics present in the Distribution Network.

FEATURES

Salient Features
Microprocessor based Power Factor Controller with Special Features

Four Quadrant Measurements

    • Accuracy of +0.8% for Reactive Power, + 0.5% for Current
    • 6 or 12 steps to operate Capacitor-Reactor Circuits.
    • Precise and quick relay controls
    • Continuous monitoring of defective capacitor stages.
    • Counting, Storing and Display of number of switching operation
    • Alarm for excess operation than programmed limits.
    • Dual control curve characteristics: to avoid over compensation under light loads and to avoid inductive reactive power under regenerative conditions.
    • Monitoring of harmonic levels continuously with alarm and safety trip facility.
    • Zero voltage & Zero current tripping with alarm signals.
    • Manual/Automatic operation with ability to switch each individual Capacitor


Parameters Measured and Displayed

    • Voltage
    • Current
    • Reactive Power
    • Power Factor
    • Frequency
    • Harmonics

    System Protection by Incoming Moulded Case Circuit Breaker selected with tripping characteristics for the Individual Capacitor Reactor Circuit as well as multi bank parallel switching characteristics

    Feeder Protection by MCB having tuned tripping characteristics to ensure avoidance of any inadvertent tripping by inrush current of the capacitors

    Filter Duty Contactors enables the switching of different stages of the Filter System for varying loads.
    Capacitor Switching Thyristor Module is used when the requirement is of high speed reactive Power Compensation for highly fluctuating loads.

    Capacitors of Cylindrical, Dry Type, and Segmented Metallised Polypropylene Construction with patented Spring loaded Terminals and Overpressure Disconnector safety features present in the Distribution Network.


     

    Super Heavy Duty capacitors

    Heavy Duty capacitors

    Over Current
    Withstand Capability

    Min. 1.8 times IN at rated Voltage permanently & Min. 250 times IN during short peak currents

    Min. 1.5 times IN at rated Voltage permanently &Min. 200 times IN during short peak currents

    Wattage Loss

    0.2 Watt/KVAR at Capacitor Coils and 0.5 Watts/KVAR at Terminals including Discharge Resistors

    0.2 Watt/KVAR at Capacitor Coils and 0.5 Watts/KVAR at Terminals including Discharge Resistors

    Temperature
    Withstand Capability

    –40°C to + 60°C

    –25°C to + 55°C

     Voltage

    480V/525V

    480V/525V

    Application

    Tuned/ Detuned

    Tuned/ Detuned

     

    Harmonic Filter Reactors with low loss Iron Core Design


    Design

    Iron Core Design

    Ambient Temperature

    60º C, maximum ambient temperature

    Insulation Class

    F

    Linearity

    1.75 x IN at reduction of the Inductivity

    IN

    Current from QLC without harmonic load

    ITH = 1.22 x IN

    Max. Permissible effective value of the current considering
    10% over voltage and the permissible harmonic currents


    Alarms

    Alarms Indicated

    The Alarm Signal is initiated for abnormalities in the System. The alarm can be Accepted & Re-set by pressing of Manual / Reset Push button.
    • Power factor Alarm
    • Harmonic Alarm
    • Over-current Alarm
    • “U=0” Alarm
    • “C=0” Alarm
    • “I=0” Alarm


    Benefits


    • No failures due to Harmonic Overloading
    • Lowered heating in induction motors and improved performance by reduction of harmonic torques
    • Reduced losses in the distribution system and motor loads
    • Shielding of sensitive electronic control equipment
    • Avoidance of harmful resonance/amplification of harmonics
    • Avoidance of failure of Power Factor Correction unchoked capacitors due to excessive harmonic overheating