Product Overview

The tuning reactor -HRDQ-TR is used in low-voltage reactive power compensation cabinets and is connected in series with capacitors. When there are a large number of rectifier and converter devices and other harmonic sources in the low-voltage power grid, the high-order harmonics they generate will seriously endanger the safe operation of the main transformer and other electrical equipment. After the reactor is connected in series with the capacitor, it can effectively absorb the harmonics of the power grid, improve the voltage waveform of the system, increase the power factor of the system, and effectively suppress the inrush current during closing and the operating overvoltage, effectively protecting the capacitor.

Structural features

The tuning reactor -HRDQ-TR is available in three-phase and single-phase types, both of which are dry-type with iron cores.

The core is made of high-quality cold-rolled oriented silicon steel sheets. The core column is divided into uniform small sections by multiple air gaps. The air gaps are separated by epoxy laminated glass cloth to ensure that the air gaps of the reactor do not change during operation.

The coil is wound with H-class enameled flat copper wire, closely and evenly arranged, and has excellent heat dissipation performance.

The core of the coil of the tuned reactor is assembled into one piece and undergoes a process flow of pre-baking → vacuum impregnation → hot baking curing. H-class impregnation is adopted to firmly bond the coil and core of the reactor together. This not only significantly reduces the noise during operation but also has an extremely high heat resistance grade.

The fasteners of the HRTFR core column of the tuned reactor are made of non-magnetic materials to ensure that the reactor has a high quality factor and a low temperature rise.

The exposed components have undergone anti-corrosion treatment, and the terminals led out are tin-plated copper tube terminals.

Product features

Coil

The coil of the tuned reactor -HRTFR is wound with H-class enameled wire. One winding can simultaneously generate three coils. These coils are small in size, generate little heat, dissipate quickly, and have a closely arranged, uniform and smooth surface. All exposed components have undergone anti-corrosion treatment. Meanwhile, an excellent superconducting welding process is adopted. After the coil is properly welded to the wire nose, the maintenance-free service life exceeds 10 years. It completely eliminates the fatal defect of poor welding and bonding from the root, and is suitable for any place below 3,500 meters in altitude, greatly improving stability.

Iron core

The core is made of low-loss imported cold-rolled non-oriented silicon steel sheets, which are formed in one piece by the stacked cold-pressing process. It has prominent advantages such as neat arrangement without burrs and excellent consistency. The core column is made by cold-pressing one or more sections in a stacked manner. The one-time formed core column ensures that the magnetic circuit of the reactor is consistent and unobstructed. By improving the stacking and winding processes, the three-phase balance and consistency of the product have been greatly enhanced.

Air gap

The air gap is separated by insulating composite non-inductive glass cloth pressure plates, which are formed by one-time extrusion without rebound. Moreover, this material is both insulating and non-magnetic, ensuring that the reactance air gap does not undergo any changes during operation.

"Whole"

After the coil and core are assembled into one unit, they need to go through the process of pre-baking → vacuum impregnation → hot baking curing. H-grade impregnating varnish is used to firmly combine the coil and core of the reactor together, forming a complete whole, eliminating vibration. This not only greatly reduces the noise during operation but also has a higher heat resistance grade. It can ensure that the reactor can operate safely and noiselessly even at high temperatures. The insulation level can reach 4KV/10s.

Over-temperature protection

Each reactor is equipped with an over-temperature protection device, which can provide safety protection output in case of overheating and overload to prevent equipment damage from overheating.