Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Losses in TransformerAs the electrical transformer is a static device, mechanical loss in transformer normally does not come into picture. We generally consider only electrical losses in transformer.Loss in any machine is broadly defined as difference between input power and output power. When input power is supplied to the primary of transformer, some portion of that power is used to compensate core losses in transformer i.e. Hysteresis loss in transformer and Eddy current loss in transformer c

Leakage Reactance DefinitionIn a transformer, not all the flux links both the primary and secondary windings. Some flux links with only one winding, called leakage flux. This leakage flux causes self-reactance in the affected winding.This self-reactance is also known as leakage reactance. When combined with the transformer’s resistance, it forms impedance. This impedance causes voltage drops in both the primary and secondary windings.Resistance of TransformerThe primary and secondary windings of

Eddy Current DefinitionAccording to Lenz’s law, when a conducting loop is exposed to a changing magnetic field, it generates an emf that induces a current opposing the change. Similarly, when a magnetic field changes through a conducting body, like a filament or a slab, it causes currents to flow through the material’s cross-sections.These currents are given the name eddy currents after the water eddies that are small swirling whirlpools observed in lakes and oceans. These eddy current loops can

Transformer Cooling System

Transformer Banking

Equivalent circuits for multiple voltage levels

Equivalent circuit with ideal transformer

Equivalent circuit of three-winding transforme

Equivalent circuit of two-circuit transformer

What is Over Fluxing in Transformer ?Over Fluxing DefinitionOver fluxing in a transformer occurs when the magnetic flux density exceeds the designed limit, leading to potential damage.Causes of Over FluxingOver fluxing can be caused by overvoltage, low-frequency power generation, lightly loaded transmission lines, and inadequate shunt compensation.Effects of Over Fluxing Over voltage causes due to sudden load rejection Low frequency generation of power Transmission line is lightly loaded Proper