Power Factor Correction

The PowerLogic™ PFC Smart Capacitor Bank Detuned automatic capacitor banks provide power factor correction in electrical distribution networks with moderate levels of harmonic content. The series capacitor and reactor combination is tuned below the first dominant harmonic order (usually the 5th). This prevents resonance and harmonic amplification.

Options available on request:

• Fixed stages (by controller programming)

• Custom staging ratios

• Bottom cable entry

• Icc level up to 100 kA

Low Voltage Capacitor Bank – Detuned (Network 480V / 60Hz – Tuning order 4.2)

AccuSine PFV+ is a very simple and effective means to eliminate leading or lagging power factor, reduce voltage fluctuations, enhance equipment operating life, and improve system power capacity. AccuSine PFV+ offers many features in one package that others require multiple models to accomplish.

AccuSine PFV+ can help you solve:

• Power factor

• Imbalance (specifically important for motor applications)

• Voltage stability (such as localized photovoltaic networks)

• Flicker

• AccuSine PFV+ integrates with EcoStruxure™ Power’s edge control power management and control software and analytics services that scale to your demands and adapt to your needs.

AccuSine PFV+ Sizing

For proper sizing of AccuSine units, contact the Schneider Electric sales office or visit us at https://www.se.com/us/powerandenergy. To expedite the product selection process, please have a single line diagram and/or details of the application including sizes of transformers, non-linear and linear loads, and any existing filters and capacitors.

AccuSine+ Wall Mount Conversion Kit

• Converts IP00 (UL Type Open) to IP20 (UL Type 1) wall mounted enclosed assemblies.

• Includes HMI mounting plate and cable entry enclosure for mounting on the bottom of the IP00 assemblies.

Split-Core Design

Construction

Directional silicon steel is used for the flexible core. Secondary windings are of copper. Unit is encapsulated in silicone rubber, which protects against moisture, dirt, oil, and corona.

Round Solid-Core Design

Power quality issues like harmonics and reactive power can cause problems including equipment damage and reduced reliability. In industrial networks, highly fluctuating loads like spot welders can cause voltage fluctuations and/or flicker that can lead to process malfunctions. The detrimental effects are increased operating expenses, expensive downtime, overheating equipment or poor quality on manufactured parts.

VarSet Hybrid systems provide instantaneous and infinitely variable power factor correction for industrial networks containing highly transient or unstable loads, as well as system compensation for large AC motor inrush current.

The VarSet Hybrid system integrates conventional power factor correction systems and the latest IGBT-based solutions to provide ultra rapid response and infinitely variable kVAR control never before seen in a power factor correction product. Specifically designed for the instantaneous support required by welding equipment, the VarSet Hybrid eliminates voltage sags and voltage flicker while increasing system capacity, providing energy savings and improving weld quality. It also provides current inrush support for applications such as large horsepower motor starting. The VarSet Hybrid is comprised of a Detuned Capacitor Bank with either an Active Harmonic Filter or an Electronic Var Compensator.

Active Harmonic Filters (AHF) are static power electronic products that employ digital logic and IGBT semiconductors to synthesize a current waveform that is injected into the electrical network to cancel harmonic currents caused by nonlinear loads. AHF employ current transformers to measure the load current to determine the content of harmonic current present. By injecting the synthesized current, network harmonic currents are greatly mitigated, thus reducing the heating effects of harmonic current and reducing voltage distortion.

AHF also have the ability to correct for poor displacement power factor (DPF) and provide for mains current balancing. DPF correction can be provided for either leading (capacitive) or lagging (inductive) loads. Mains current balancing is achieved by measuring the negative sequence current present and injecting the inverse negative sequence current to balance the current for the upstream network.

An Electronic Var Compensator (EVC) is a power electronic device consisting of insulated gate bipolar transistors (IGBT) that switch into the AC lines to modulate the output to correct the displaced reactive current (leading or lagging) and balance the current for the power source (also known as negative sequence current).

Detuned Capacitor Banks are automatic capacitor banks made of several capacitor steps controlled by a power factor (PF) controller. They are able to adjust PF to any value between 0.8 lagging and unity. When the PF differs from the target setting for more than 1 second, the capacitor switching modules switch stages as needed to bring the PF as close as possible to the target PF. Switching can be accomplished by electro-mechanical contactors or solid state switches.

The VarSet Hybrid is a custom solution that is engineered to order. Your local Schneider Electric representative can help you select the correct hybrid solution for your specific needs. To learn more, visit us at https://www.se.com/us/powerandenergy.