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Our company specializes in the field of power equipment, committed to providing reliable reactor products. As inductive components, reactors play a crucial role in power grids, often used for current limiting and compensation to ensure grid stability and efficiency. In this domain, we proudly offer our series of dry-type iron core reactors, a product line that embodies our dedication to technological and environmental responsibility.
Our dry-type iron core reactors are meticulously designed and manufactured. The core technology involves resin casting for all iron core columns and windings, which imparts electrical performance and robust mechanical strength to the reactors. To ensure the accuracy and linearity of the reactors, we specifically select a lower magnetic flux density and cleverly incorporate numerous small air gaps.
The windings of this series are produced using a vacuum pressure resin casting process, which provides significant advantages such as low partial discharge, high mechanical strength, and strong short-circuit withstand capability. Furthermore, their safe, fire-resistant, and pollution-free characteristics allow the equipment to operate directly at load centers, effectively shortening transmission and distribution distances and enhancing system reliability.
In terms of structural design, we innovatively implement integral resin casting for the iron core pies and air gaps. This design significantly reduces the magnetostriction and vibration of the iron core sheets, thereby achieving the benefits of high mechanical strength and low noise. Additionally, the product is characterized by its small size, light weight, and ease of installation. Being oil-free, it completely eliminates the risks of oil deterioration and sealing leakage, truly enabling low-maintenance operation and substantially reducing operating costs.
Our products also demonstrate environmental adaptability. Since both the windings and the iron core surface are covered by solid insulation materials, the reactors possess moisture-proof and mold-proof performance. This means that even in high humidity and harsh environments, our dry-type iron core reactors can operate reliably, providing continuous and stable power support to our customers.
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View MoreWhat is an Iron Core Reactor?
An iron core reactor is an electrical device used in power systems to control current and voltage levels by introducing inductive reactance into the circuit. It consists of a coil of wire wound around a core made of laminated iron sheets. The iron core enhances the magnetic field generated by the coil, which increases the inductance and allows the reactor to efficiently limit short-circuit currents, manage voltage stability, and improve overall system performance.
Unlike reactors with air cores, the iron core reactor’s magnetic circuit is concentrated and guided by the iron core material, which significantly boosts its inductive properties. This makes iron core reactors a critical component in electrical substations and industrial applications where precise current control is necessary.
How Does an Iron Core Reactor Differ from an Air Core Reactor?
The primary difference between an iron core reactor and an air core reactor lies in the material used for the magnetic path. In an iron core reactor, the coil is wound around a laminated iron core, which enhances the magnetic flux and significantly increases inductance. This allows the reactor to achieve higher reactance with fewer coil turns and a more compact design.
In contrast, an air core reactor does not use any magnetic material in its core. Instead, the coil is either wound around a non-magnetic support or suspended in air. Because air has a much lower magnetic permeability than iron, air core reactors require more turns of wire and larger physical dimensions to achieve the same inductance. However, they have the advantage of avoiding magnetic saturation and core losses, making them more suitable for high-frequency or harmonic filtering applications.
iron core reactors are typically more efficient and compact for low- to medium-frequency applications, while air core reactors are preferred in situations where magnetic saturation or losses must be avoided.
What Are Iron Core Reactors Used For?
Iron core reactors are widely used in electrical power systems for a variety of essential functions. Their primary role is to manage and stabilize current flow in both transmission and distribution networks. By providing inductive reactance, these reactors help limit fault currents, protect equipment from damage, and maintain system stability during abnormal conditions.
In substations, iron core reactors are commonly installed in series with transformers or transmission lines to control voltage drops and minimize power losses. In industrial applications, they are used to smooth out current in motor drives, improve power factor, and reduce harmonics in electrical networks.
Additionally, iron core reactors are found in applications such as:
Short-circuit current limiting – to protect sensitive equipment during faults
Load balancing – to evenly distribute electrical load across phases
Voltage regulation – to ensure consistent voltage levels during peak or fluctuating demand
Harmonic filtering – to improve the quality of power in systems with non-linear loads
Thanks to their efficiency and reliability, iron core reactors play a crucial role in maintaining the safe and stable operation of modern electrical systems.
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