Knowledge Base

Industrial Electrical Glossary

Essential technical terms for transformers, reactors, power electronics, and industrial manufacturing — explained clearly by the engineering team at Unitraf JSC.

Transformer

An electrical device that transfers energy between circuits through electromagnetic induction, changing voltage levels while maintaining frequency.

Reactor (Inductor)

An electromagnetic component used to limit current, smooth waveforms, filter harmonics, or store energy in a magnetic field.

Magnetic Core

A piece of magnetic material used to confine and guide magnetic flux in transformers, reactors, and other electromagnetic devices.

Electromagnetic Induction

The process by which a changing magnetic field generates an electromotive force (voltage) in a conductor, the fundamental operating principle of transformers.

Toroidal Transformer

A transformer built on a doughnut-shaped (toroidal) core, offering compact size, low weight, minimal electromagnetic interference, and high efficiency.

Winding

A coil of insulated conductor wire wound around a magnetic core to create or respond to magnetic flux in transformers and reactors.

Harmonic Distortion

The presence of frequencies in an electrical signal that are integer multiples of the fundamental frequency, causing power quality problems.

Variable Frequency Drive (VFD)

An electronic device that controls the speed and torque of an AC motor by varying the frequency and voltage of the power supplied to it.

Uninterruptible Power Supply (UPS)

A device that provides emergency backup power and power conditioning to protect critical equipment from power outages and electrical disturbances.

CNC Machining

Computer-controlled precision manufacturing process that removes material from a workpiece to create custom parts with tight tolerances.