Transformer Open and Short Circuit Tests
We conduct open circuit and short circuit test on single phase transformer to determine the efficiency and regulation of a transformer on any load condition and at any power factor.Open...
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Transformers Questions & Answers Part-4
Where Star (wye) Delta transformer is used in Power system Star-Delta Transformer (Y-Δ ) Primary Y (High Voltage side) and Secondary ( Low Voltage side) Δ is generally used at...
Voltage Variations Effects on Power Plant Equipment
When the voltage at the terminal of the electrical equipment deviates from the value as specified from the name plate the equipment performance and life time of the equipment are...
Types of Transformers
Types of transformers The transformers are classified based on voltage levels, Core medium used, winding arrangements, use and installation place etc. Transformers based on voltage levels The transformers are classified...
Losses of Transformer
Losses are the wastage of energy in the device which will affect the overall efficiency of the device. So the losses of the device should be known to design the...
Faults in a Transformer
Transformers are the major power system components which are used at various voltage levels with the capacity varying from 1kVA to >600 MVA. Transformers are widely used devices to transfer...
Types of Transfomer Cooling Methods
The developed heat because of core and copper losses should be dissipated to atmosphere continuously during operation.If the heat arises by the losses is not removed then The developed heat...
Advantages and Applications of zigzag transformer
Zig Zag transformer ZIg Zag transformer is a special purpose transformer used in power system, which is also called as “interconnected start winding”. Even though this type of transformer connection...
What is a transformer tap changer?
The transformer voltage at the load side desired to be constant or as close to the design value. But the load voltage may vary according to current drawn by the...
Interview Questions on Transformers
What is a transformer? Transformer is a static electrical device which transfers power from one circuit to another circuit without any physical contact. The main aim of this transformer is...