Product Center

Home / Product Category / Corollary Equipment Of Transformer / High/Low Voltage Reactor / Dry Type Iron Core Low Voltage Series Reactor

Dry Type Iron Core Low Voltage Series Reactor

The Dry Type Iron Core Low Voltage Series Reactor is a highly efficient and reliable solution designed to enhance power quality in low-voltage power systems. With its innovative dry insulation and robust iron core construction, this reactor provides precise harmonic filtering, voltage stabilization, and reactive power control. By eliminating the need for oil-based insulation and cooling, it offers a safer, environmentally friendly alternative for industrial and commercial installations. Engineered for high efficiency and low maintenance, the Dry Type Iron Core Low Voltage Series Reactor ensures extended reliability and optimal performance in demanding power distribution environments, making it a perfect choice for reducing harmonic distortion and protecting sensitive equipment from voltage fluctuations.

Quantity:
Availability:





Inquire Add to Basket

Product Components

Iron Core (Magnetic Circuit Core)
Constructed from laminated silicon steel sheets, forming a closed magnetic circuit to enhance inductance. However, flux density must be carefully designed to avoid saturation, especially in low-voltage, high-current applications.
The silicon steel surface is coated with insulating varnish to reduce eddy current losses, and laminations are secured with clamping devices or epoxy resin to ensure mechanical stability.
Characteristics: In low-voltage reactors, the iron core is relatively smaller in size, and the magnetic circuit design prioritizes efficiency rather than high-voltage insulation.

Winding (Coil)
Manufactured using copper or aluminum conductors with a large cross-sectional area to accommodate high current loads (as low-voltage applications typically have higher currents).
Winding configurations are typically layered or segmented, with tight turn arrangements to optimize space utilization while maintaining adequate cooling channels.
Insulation treatment:
Turn-to-turn insulation: Uses polyester film or DMD (polyester film + non-woven fabric) to prevent electrical breakdown.
Overall insulation: The entire winding may be impregnated with epoxy resin to enhance mechanical strength and environmental resistance.

Insulation System
Turn-to-turn insulation: While insulation requirements are lower than those in high-voltage reactors, they must still withstand power frequency voltages and transient overvoltages.
Main insulation: Separation between the winding and iron core is achieved using insulating pressboard or epoxy resin to prevent short circuits.
Overall protection: Some reactors undergo Vacuum Pressure Impregnation (VPI) to improve moisture resistance and pollution endurance.

Mechanical Support Structure
Core fixation: The laminated core is secured using metal clamps or an epoxy resin framework to suppress vibration noise.
Winding fixation: Windings are reinforced with fiberglass-reinforced bands or epoxy resin encapsulation to prevent deformation due to electromagnetic forces.
Base structure: Typically made of steel or aluminum alloy, providing mounting interfaces and structural rigidity.

Cooling System
Natural air cooling: Primarily relies on air convection, with ventilation channels or finned structures designed into the winding and iron core.
Forced air cooling (optional): High-capacity reactors may incorporate cooling fans, but low-voltage dry-type reactors predominantly use natural cooling.

Connection Terminals & Output Devices
High-current terminals are made of copper busbars or tin-plated copper lugs, with flat contact surfaces to minimize contact resistance.
Output bushings or insulated terminal blocks provide electrical isolation, with some designs incorporating bolt connections for easy on-site installation.

Enclosure & Protection (Optional)
Protective mesh cover: Made of metal grid or non-metallic enclosures, preventing foreign object intrusion while allowing air circulation.
Noise reduction design:
Rubber damping pads are added to core clamps to reduce vibration noise.
Some designs use epoxy resin encapsulation for overall vibration and noise suppression.

Monitoring Components (Optional)
Temperature sensors (e.g., thermistors) are embedded in the winding to monitor temperature rise and trigger alarms in case of overheating.
Some high-end reactors are equipped with current transformers (CTs) for real-time current monitoring.

Get a Quote

Key Differences

Feature	Dry-Type Core Low Voltage Series Reactor	Dry-Type Core High Voltage Series Reactor
Design Objective	High Current Limiting, Reactive Power Compensation, Low Voltage Harmonic Mitigation	High Voltage Endurance, Short-Circuit Current Limiting, High Voltage System Harmonic Suppression
Voltage Rating	Typically ≤1kV	Typically ≥6kV (Up to 66kV or higher)
Insulation Requirements	Relatively Low (Main Insulation Thickness is Small, Inter-turn Insulation)	Extremely High (Multiple Layers of Main Insulation, Must Withstand Lightning Surge and Operation Overvoltage)
Winding Structure	Coarse Wire, Fewer Turns, More Inter-layer Heat Dissipation Channels	Fine Wire, More Turns, Segmented Winding for Voltage Equalization, Thicker Insulation Layers
Core Design	Higher Magnetic Flux Density (Near Saturation Point to Reduce Volume)	Lower Magnetic Flux Density (Margin Reserved to Avoid Local Saturation from High Voltage Harmonics)
Loss Characteristics	Copper Losses Dominant (Need to Optimize Wire Cross-section for High Current)	Both Iron and Copper Losses Significant (Hysteresis Losses at High Voltage)
Cooling Method	Primarily Natural Cooling, Relying on Winding Heat Dissipation Channels	Forced Air Cooling or Natural Cooling + Heat Sink Design (To Handle Higher Temperature Rise)
Connection Terminals	Large Cross-Section Copper Busbars/Bolt Terminals, Low Contact Resistance Design	High Voltage Bushings or Epoxy Resin Potted Terminals, Long Creepage Distance Design
Size and Cost	Compact, Material-Centric Cost (High Copper/Aluminum Proportion)	Larger Size, Cost-Centric Insulation Process (Epoxy Potting, Voltage Equalization Shielding, etc.)
Typical Applications	Low Voltage Distribution Cabinets, Inverter Input, New Energy Inverter Output	High Voltage Transmission Networks, Substation Series Compensation, HVDC Converter Stations, Industrial High Voltage Inverter Systems

Product Applications

Economy is more affordable

Enhances power quality by filtering harmonics in large-scale motor control systems.

Industrial Motor Drives
Improves voltage stability and reduces transient disturbances in industrial power grids.

Distribution Network Stabilization
Optimizes reactive power compensation for solar and wind installations.

Renewable Energy Systems
Strengthens overall grid performance in urban and commercial power distribution networks.

Utility Grid Support

Product Advantages

Superior Power Quality

Effectively minimizes harmonics and voltage fluctuations for enhanced system performance.

Robust Durability

Constructed with high-grade materials for extended service life and reliable operation under harsh conditions.

Low Maintenance

Innovative dry-type design and natural cooling reduce the need for frequent upkeep, lowering overall operating costs.

WellDone High And Low Voltage Reactor Design Drawing

FAQ

What range of High And Low Voltage Reactor products do you offer and which standards do they meet?

We deliver an extensive portfolio of High And Low Voltage Reactor solutions, including Series Reactors, Air Core Reactors, Filter Reactors, Line Reactors, Output Reactors, Dry Type Iron Core High Voltage Series Reactors, and Dry Type Iron Core Low Voltage Series Reactors. Backed by nearly two decades of industry expertise, our engineering team rigorously designs each reactor to conform with key international guidelines—encompassing ANSI, IEEE, DOE, CSA, AS, AZS, GOST, IEC, among others. Many of our products also carry UL, cUL, and CSA certifications, ensuring they meet stringent global safety and performance benchmarks.
How do you ensure the quality and reliability of your High And Low Voltage Reactors?

Our reactors are manufactured under an all-encompassing quality assurance system that scrutinizes every phase—from the selection of premium materials to exhaustive final testing. Each reactor is supported by a minimum 24-month warranty, reflecting our unwavering commitment to safety, consistency, and long-term performance. This meticulous quality control process has solidified our reputation among international clients and top industry players.
What are your production lead times, customization options, and global market reach?

For our standard reactor models, production typically spans 10 to 25 days. In addition, we provide flexible OEM/ODM services to create tailor-made solutions that precisely match project requirements. Our packaging strategies are adaptable to individual client needs, ensuring safe and efficient delivery. With an expansive global network, our reactors are successfully exported to markets across North America, Europe, South America, Australia, Asia, and Africa. For more detailed information or personalized support, please reach out via email or WhatsApp.