what happens to voltage in transformer when load is varting
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Voltage Regulation, in general, is defined as change in magnitude of Secondary Terminal Voltage per unit Rated Secondary Terminal Voltage when load at a given Power Factor is reduced to zero while maintain the Primary Voltage constant.
The change in magnitude of Secondary Terminal Voltage with loading of Transformer is because of Primary and Secondary leakage impedance. The magnitude of this change in voltage depends on the load current, load power factor, total leakage reactance and total resistance of Transformer.
As the consumer need their terminal voltage to be within a prescribed limit, the Voltage Regulation of a Distribution Transformer shall be less i.e. good. For better Voltage Regulation of a Distribution Transformer, it is quite important that their leakage impedance shall be less.
The change in magnitude of Secondary Terminal Voltage with loading of Transformer is because of Primary and Secondary leakage impedance. The magnitude of this change in voltage depends on the load current, load power factor, total leakage reactance and total resistance of Transformer.
As the consumer need their terminal voltage to be within a prescribed limit, the Voltage Regulation of a Distribution Transformer shall be less i.e. good. For better Voltage Regulation of a Distribution Transformer, it is quite important that their leakage impedance shall be less.
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