KVAR MAX is a Real Time state-of-the-art, electronic switched system designed for Unity Power Factor for various load conditions.
Basic Systems: Include iron core reactors to limit the inrush current
Harmonic Filter Systems: Include reactors that detune/tune the network to prevent
resonance and absorb harmonics.
Unbalanced Systems: Individual phases are separately corrected, line to line or line to neutral
Smooth and transient free
Connection and disconnection of the capacitor to and from the network occurs at zero crossing. This smooth connection avoids the transient effects like waveform distortions, generation of switching spikes etc., typically created by electro-mechanically switched or SSR based APFC systems. The total correction time is much faster than traditional APFC systems.
The electronic switches do not wear out or deteriorate during the switching process and the capacitors are not adversely affected by high inrush currents. These advantages contribute to a much longer life expectancy.
There is an ongoing, cumulative reduction of capacity in electro-mechanically switched PFC systems due to the effect of transients during
connection and disconnection. This can be detrimental to detuned contactor switched systems where the changes in ratio between the
capacitors/reactors shift the resonance frequency, which may result in resonance. KVAR MAX prevents these conditions.
KVAR MAX includes custom designed, iron core reactors in series with the Capacitors & Switching Modules.
Harmonic Filter Reactors
The reactors are manufactured under tight tolerances and for high linearity. They are constructed with low hysteresis losses iron core,
precision controlled air gaps and have class H insulation (l80°C) with temperature controlled switch for protection.
Systems without tuned or detuned reactors are equipped with limiting reactors designed to limit the inrush current which may develop in the capacitors during power up. This avoids damage to the switching elements, fuses and capacitors.
The detuned reactors prevent resonance by shifting the capacitor/network resonance frequency below the first dominant harmonic (usually the 5th).
Systems with tuned reactor design are also available upon request to absorb most of the 5th and 7th harmonics.
Key Features and Advantages
• Transient Free capacitor group switching, using electronic switching elements
• Compatible with Diesel Generators and Windmills
• Avoids wave form distortions, since capacitors are connected and disconnected during zero crossing
• Prevents damage to sensitive electronic equipment
• Saves energy by reduced Maximum Demand (M.D), PF bonus & savings in losses
• Accurate power factor control, even in the presence of harmonics
• Dramatically increases the life expectancy of switching elements and capacitors
• Built-in network analyzer, measuring all network parameters including harmonics
• Modular and upgradable with increased plant load
|Reactive Power||100 – 1600 KVAR
|Rated Voltage||380 V – 690 V|
|Frequency||50 Hz / 60 Hz|
|Switching Device||SCR modules|
|Capacitors||Low loss, self healing IEC 60831-1/2|
|Reactors||Low loss, Iron core
Current limiting, 5.6%, 7%, 14%, Tuned
|Display||LCD with backlight, menu driven|
|Measurements||Phase – Phase, Phase – Neutral, V, I, F, KW,
KVA, KVAR, PF, THD-V, THD-I,
temperature harmonics (V,I), various faults
|Interface||RS-232, RS-485 (MODBUS), Ethernet|
|Enclosure||Modular, sheet metal with epoxy powder coating RAL 7032|