Enhancing Power System Efficiency with Linear Impedance
High-performance air core series reactors designed to limit fault currents, control power flow, and enhance power quality in transmission and distribution systems.
Our Air Core Series Reactors
Usha Capacitors, under the brand “USHA Electric,” offers advanced air core series reactors engineered to improve the reliability and efficiency of electrical networks. These reactors provide linear impedance with respect to current, making them ideal for applications where iron core reactors may saturate. Constructed with epoxy-impregnated, fiberglass-encapsulated aluminum or copper windings, our reactors are maintenance-free, environmentally friendly, and designed for both indoor and outdoor use. Compliant with IEC standards and ISO:9001-2015 certified, they ensure superior performance in fault current limiting, harmonic filtering, and power flow control.
Key Features
Linear Impedance: Provides consistent impedance across all current levels, preventing saturation under high currents.
Fault Current Limiting: Reduces short-circuit currents to protect downstream equipment, enhancing system reliability.
Harmonic Filtering: Works with capacitors to form tuned LC circuits, minimizing harmonic distortion in power systems.
Durable Construction: Epoxy-impregnated, fiberglass-encapsulated windings with UV-resistant coatings for outdoor applications.
Low Maintenance: Air core design eliminates oil insulation, reducing fire hazards and maintenance needs.
High Mechanical Strength: Withstands short-circuit stresses and extreme weather conditions.
Standards Compliance: IEC standards, RoHS, and ISO:9001-2015 certified.
Technical Specifications
Voltage Range: Up to 33 kV (customizable for higher voltages)
kVAr Ratings: Standard 0.2% to 6% of capacitor bank kVAr, with custom ratings available
Frequency: 50 Hz / 60 Hz
Current Rating: Designed for continuous operation at 1.3 times rated RMS current
Temperature Range: -5°C to 50°C
Enclosure: IP54-rated for outdoor use, with optional galvanised steel structures
Configuration: Single-phase or three-phase stacked designs
Applications
Fault Current Limiting: Reduces short-circuit currents in transmission and distribution networks.
Power Flow Control: Balances load flow over parallel transmission lines for maximum power transfer.
Capacitor Damping: Limits inrush and outrush currents in shunt-connected capacitor banks.
Harmonic Suppression: Forms tuned filter circuits with capacitors to reduce harmonic distortion.
Industrial Applications: Steel plants, renewable energy systems (solar and wind), and HVDC smoothing.
Test Laboratories: Used in high-voltage test setups for circuit breaker and capacitor testing.
Why Choose Usha Capacitors?
With over 350 successful electrical turnkey projects delivered globally, Usha Capacitors is a trusted leader in energy management solutions. Our air core series reactors are custom-designed to meet specific system requirements, ensuring optimal performance and longevity. Backed by a team of 125+ professionals and advanced manufacturing facilities, we deliver innovative, reliable, and cost-effective solutions that enhance power system efficiency. Contact us at delhi@ushacapacitors.com for expert advice or tailored configurations.
