May 30,2025 By T Power
May 30,2025 By T Power
Understanding the terminology used in the transformer industry is essential for engineers, technicians, and energy professionals. At T Power Transformer, we believe knowledge empowers precision, efficiency, and innovation. This glossary provides in-depth definitions and context for the most commonly used transformer terms.
A transformer with a single winding that acts as both the primary and secondary winding, often used for voltage regulation or interconnection of systems with different voltage classes.
Insulated device allowing conductors to pass safely through a grounded barrier, such as a transformer tank wall, without electrical contact with the barrier.
The magnetic part of the transformer, usually made of laminated silicon steel, which guides magnetic flux between windings and minimizes energy loss.
The maximum electric field that a material can withstand without breakdown. Crucial for transformer insulation systems.
Circulating currents induced in the core or conductors due to changing magnetic fields. They cause energy loss and are reduced by laminating the core.
The magnetic field created by alternating current in the transformer. It's responsible for energy transfer between windings.
A measure of resistance to AC current flow in the transformer winding, combining resistance and reactance. Impedance affects voltage regulation and fault levels.
The resistance measured between conductors and ground. It's an indicator of the insulation's health and is tested periodically for safety.
Also known as copper loss, this is the power loss due to resistance in the windings when the transformer is under load.
The energy lost primarily due to hysteresis and eddy currents in the core when the transformer is energized but not supplying load.
A transformer that uses mineral oil or synthetic ester to cool and insulate internal components. Oil also helps suppress arcing and flashovers.
A mechanism that adjusts transformer tap settings without interrupting power flow, maintaining voltage levels during load variations.
A localized dielectric breakdown of a small portion of insulation, often a precursor to more serious insulation failure.
A normalization method used to express transformer parameters (impedance, voltage, etc.) relative to a base value, simplifying comparisons and calculations.
Indicates the direction of the voltage generated in the secondary winding relative to the primary. Correct polarity is critical for paralleling transformers.
That part of impedance which resists the change in current due to inductance and capacitance, causing phase shifts in voltage and current.
The change in secondary voltage as the transformer goes from no-load to full-load condition, expressed as a percentage of full-load voltage.
A condition where increases in magnetic field strength do not result in proportional increases in magnetic flux, limiting the transformer's efficiency.
A device that adjusts the number of turns in a winding, thereby regulating output voltage. Tap changers can be manual or automatic (OLTC).
Indicates the phase difference between primary and secondary windings and the winding configuration. Essential for parallel operations and system analysis.
Coiled conductors around the core. There are two main windings: primary (connected to the source) and secondary (connected to the load).
Describes the primary and secondary winding connection. Common in industrial applications for its fault tolerance and load balancing features.
Mastering these terms is crucial for effective communication and operation in the electrical and power transformer industry. At T Power Transformer, we support industry professionals with robust, high-performance transformers backed by technical knowledge and decades of experience. Explore our resources and transformer solutions tailored to your project needs.
