Enhancing Electrical Efficiency with Himel Three-phase Serial Reactors

In the intricate landscape of electrical circuits, the implementation of power factor correction techniques is paramount to reduce current draw. This involves strategically infusing reactive power, a task efficiently executed through the integration of capacitor banks. However, the continuous and abrupt switching of capacitors, coupled with their charging and discharging cycles, can result in the emergence of higher harmonic currents. This, in turn, poses potential threats to the integrity of equipment, switchgears, and even the capacitors themselves.

The vulnerability of capacitors to damage from harmonic currents, inrush currents, and overvoltage in reactive power compensation systems necessitates a meticulous approach. To combat these issues and steer clear of parallel resonance, the introduction of reactors in series with capacitors becomes imperative. This strategic addition mitigates the risks associated with parallel resonance, ensuring the health and longevity of the electrical system.

Navigating Capacitor Challenges with Detuned Reactors

Venturing deeper into the intricacies of the system, the utilization of capacitors to enhance power factor introduces a unique challenge. The inductance stemming from transformers and capacitance forms a resonant circuit. This circuit, when coupled with harmonics emanating from the load, creates a resonance frequency. The consequence of this phenomenon is the withdrawal of excessive current, leading to potential overload in the electrical circuit.

To effectively counteract these challenges, detuned reactors are strategically placed in series with capacitor banks. These reactors play a pivotal role in shifting the resonance frequency to lower levels. By doing so, they reduce the risks associated with resonance, ensuring a harmonics-free circuit. The tuning frequency, expressed as a percentage of capacitance, becomes a crucial factor in this harmonic dance.

Himel HKSG Detuned Reactors A Solution for Harmonic Challenges

Enter Himel's HKSG Detuned Reactors—a robust solution designed to thwart the amplification of power grid harmonics and resonance resulting from the connection of capacitor banks. These reactors feature a sophisticated three-phase three-column type structure, providing not only high-temperature tolerance but also operating silently, minimizing disturbances in the electrical environment.

The coils within the reactor are tightly wound with enamelled flat wires. This meticulous design ensures that the coils remain steadfast during operation, eliminating any unwanted vibrations. For currents exceeding 100A, foil windings come into play, enhancing the reactor's capability to handle higher loads with precision.

Decoding the Selection Code

Navigating the selection code is key to harnessing the full potential of Himel's HKSG Detuned Reactors. The model name, HKSG, serves as the starting point, followed by a letter indicating the winding material. 'Default' designates copper winding, while 'L' stands for aluminium windings. The subsequent three abbreviations define the reactor's rated capacity, with Himel offering capacities up to a substantial 9.8kVar.

Following this, the rated voltage of the capacitor comes into play, with options of either 480V or 525V. The final piece of the puzzle is a two-digit alphanumeric letter, signifying the reactance ratio of either 7% or 14%. Understanding and adhering to this selection code ensures the seamless integration of the detuned reactor into the electrical system.

Operating Environment & Conditions

A critical aspect of the installation process is ensuring a conducive operating environment. Precautions must be taken to eliminate harmful gases, inflammable and explosive materials from the surroundings. Adequate ventilation is essential, coupled with measures to prevent pollution, corrosive elements, and explosive mediums that could inflict severe damage to insulators.

The chosen location should also be shielded from direct contact with rain and snow, considering the IP00 ingress protection rating of the HKSG Detuned Reactors. By adhering to these installation guidelines, the efficacy of the reactors is maximized, ensuring they operate optimally in a safe and controlled environment.

Applications of HKSG Detuned Reactors

The prolific sources of 3rd and 5th harmonic generation, such as electric arc furnaces, electric locomotives, and distribution systems in shopping malls, commercial setups, and residential buildings, demand efficient harmonic filtering. In this landscape, HKSG Detuned Reactors emerge as highly effective tools. Tailored for specific harmonics, with a 14% reactance ratio for the 3rd harmonic and 7% for the 5th harmonic, these reactors adeptly filter and mitigate the challenges associated with harmonics.

Looking to safeguard your equipment and reduce harmonic currents?  Elevate your power factor, ensuring a resilient and harmonics-free electrical environment and embrace superior electrical efficiency by integrating Himel HKSG Detuned Reactors into your systems. Contact Himel sales team for a quote.