Electrical harmonics are distortions in electrical waveforms that can contribute to wasted energy, excess heat and power quality problems.

Electrical harmonics are commonly introduced by non-linear loads such as variable-speed drives, LED lighting, computers and other electronic equipment. These devices draw current in ways that can distort electrical waveforms.

As harmonic distortion increases, electrical losses and stress on connected equipment can also increase.

Excessive harmonic distortion can contribute to overheating in electrical components, additional losses in wiring and transformers, and interference with sensitive equipment. In some facilities, these conditions can increase maintenance requirements, reduce operational efficiency and affect equipment reliability.

Tune mitigates harmonics.

Installed by a qualified electrician, the Tune Electrical Filter uses passive inductive technology to help reduce unwanted electrical harmonics and improve power quality. Designed for commercial and industrial electrical systems, it can help address harmonic-related electrical losses, reduce excess heat and support longer equipment life.

Meet the Tune Electrical Filter

The Tune Electrical Filter is a compact, passive electrical harmonic filtering device designed for commercial electrical systems. Its inductive coil is a key component of the technology used to help mitigate unwanted harmonic distortion and improve power quality.

Tune Electrical Filter commercial harmonic filtering device showing inductive coil, enclosure and product identification label

Explore the Tune Electrical Filter

Discover how Tune's passive electrical harmonic filtering technology helps commercial facilities address harmonic distortion, improve power quality and reduce electrical losses.

What are the causes of harmonics?

Electrical loads can be classified by how they draw current. Linear loads generally produce little harmonic distortion, while non-linear loads can introduce harmonics into electrical systems. Understanding the differences helps explain how electrical harmonics develop in commercial buildings.

Resistive loads

Resistive loads, such as traditional incandescent lightbulbs and electric heating elements, draw current that generally follows the shape of the applied voltage. These linear loads typically introduce little harmonic distortion, making them useful examples of relatively clean electrical consumption.

Inductive loads

Inductive loads, such as conventional fixed-speed electric motors and pumps, use magnetic fields to operate. These loads draw current that typically lags behind voltage, affecting power factor. While conventional linear inductive loads generally produce little harmonic distortion themselves, excessive harmonics elsewhere in the electrical system can contribute to additional heating and electrical losses.

Non-Linear Loads

Non-linear loads, such as LED lighting, computers, networking equipment and variable-speed drives, draw current in ways that can distort electrical waveforms. Their electronic circuits can introduce harmonic currents into the electrical system, contributing to power quality problems, additional electrical losses and excess heat.