Transformer on Load
A transformer is said to be on load condition if an electrical load is connected to its secondary winding and a current circulates in the secondary winding circuit. The load connected across the secondary winding can be a resistive load or an inductive load or a capacitive load or a combination of the three. Therefore, the magnitude of the secondary winding current also called load current depends on the load impedance and secondary voltage (V2). Also, the phase angle between the secondary voltage and load current depends on the type of the load. For example, if the load is of inductive nature, the load current will lag the secondary voltage.
Theory of Transformer on Load and No Load Operation
In this article, we will study the theory of transformer on load and no load operation. A transformer is a static electrical machine used to increase or decrease the value of voltage and current in an electrical circuit. The transformer operates on the principle of electromagnetic induction and mutual inductance. A transformer typically consists of two copper winding and a magnetic core. The windings are named as primary winding and secondary winding. The input supply is connected to the primary winding and the output electrical supply is taken from the secondary winding. Hence, the secondary winding is one to which the electrical load is connected.
Let us understand the operation of a transformer on load and no-load conditions.
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