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Oil Immersed Reactor

The Oil Immersed Reactor (OIR) is an essential component in modern power systems, designed to manage reactive power and stabilize voltage levels efficiently. Its innovative oil-immersed construction enhances performance by providing superior thermal management and insulation, which are crucial for high- and low-voltage applications. The oil not only cools the reactor by dissipating heat generated during operation but also prevents electrical breakdown, ensuring reliable and safe functionality. With its durable design, the OIR delivers long-lasting, low-maintenance performance, making it ideal for demanding power environments. Furthermore, the reactor plays a critical role in harmonic filtering, helping to reduce distortion and improve the quality of the electrical supply. The Oil Immersed Reactor is an advanced solution for voltage stabilization and reactive power compensation, ensuring optimal system efficiency and reliability.

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Product Components

Core
Typically made of laminated silicon steel sheets, sometimes incorporating air gaps to prevent magnetic saturation and maintain inductance linearity.
The core structure may be segmented or designed with gapped closed magnetic circuits to control the inductance value.

Winding (Coil)
Constructed using copper or aluminum conductors, with designs such as multi-layer cylindrical or disk-type structures.
The number of turns and the winding arrangement directly influence the reactance value and electromagnetic characteristics.

Insulating Oil
Serves as both an insulating and cooling medium, filling the internal space of the oil tank.
Requires high dielectric strength, oxidation resistance, and thermal stability (e.g., mineral oil or synthetic oil).

Oil Tank and Enclosure
Houses the core, windings, and insulating oil, typically constructed from welded steel plates.
Sealed design prevents oil leakage and external contamination.

Cooling System
Includes radiators, cooling pipes, or forced oil circulation systems (for large reactors) to dissipate heat generated during operation.

Bushings
High-voltage porcelain or composite bushings that connect internal windings to external circuits, ensuring insulation reliability.

Protection and Monitoring Devices
Pressure Relief Valve: Prevents tank rupture in case of internal faults.
Gas Relay (Buchholz Relay): Monitors gas accumulation in the oil, providing early warning of internal faults.
Thermometer & Oil Level Gauge: Continuously monitor operational conditions.

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Key Differences

Feature	Dry-Type Reactor	Oil-Immersed Reactor
Insulation Medium	Air / Solid Insulation Materials	Insulating Oil
Cooling Method	Natural Air Cooling or Forced Air Cooling	Oil Circulation Cooling (Natural / Forced)
Fire Resistance	High (Oil-Free, Flame-Retardant Materials)	Low (Oil is Flammable)
Maintenance Requirements	Maintenance-Free (No Oil Degradation Issues)	Regular Inspection of Oil Quality & Sealing Required
Size & Weight	Lightweight (Air-Core Design)	Larger (Includes Oil Tank & Oil)
Application Scenarios	Indoor Power Distribution, Subways, Data Centers	Outdoor Substations, High-Voltage Transmission

Product Applications

Economy is more affordable

Enhances motor drive systems by reducing harmonic distortion and improving voltage stability.

Industrial Automation
Maintains consistent voltage levels in urban and regional distribution networks.

Utility Grid Stabilization
Optimizes reactive power management for integrated solar and wind power installations.

Renewable Energy Plants
Provides stable, clean power for data centers, hospitals, and telecommunication facilities.

Critical Infrastructure

Product Advantages

Enhanced Power Quality

Effectively minimizes harmonics and voltage fluctuations for optimal performance.

Superior Durability

Robust oil immersion design ensures effective thermal management and extended service life.

Low Maintenance

Engineered for reliability with minimal upkeep, reducing long-term operational 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.