Design Topology of Sustainable Overload Protection of Transformer

Abstract

Overload on transformer has been a principal cause of overheating in its windings, reduction of efficiency, lowering of lifespan and sometimes leads to burn. This can be attributed to a large quantity of current drawn by the loads in the circumstances. In this paper, a design topology capable of providing sustainable protection to transformer from overload is presented. The designed system detects current drawn when being loaded and able to protect the transformer by isolation while displaying the overload current immediately a load is placed resulting in drawing a higher amount of current than the rating of the transformer. This was verified using simulation and validated by experiment on a prototype design. The simulation and experimental results achieved show good correlation, and exhibited the cogency of the design topology.