# Transformer

• ## What Do the 5P10 and 5P20 Mean in a Current Transformer?

What Do the 5P20 and 5P10 Accuracy Classes Mean in Current Transformers? For a current transformer (CT), different accuracy classes, such as 5P10, 5P20, or 10P10, are chosen based on…

• ## What is an Isolation Transformer? – Its Construction, Working and Applications

Isolation Transformer – Construction, Working and Applications What is an Isolation Transformer? Transformers are electrical machines that are used to transfer one form of AC electrical energy to another form…

• ## Difference Between Ideal and Real or Practical Transformer

What is the Difference Between Ideal Transformer & Practical or Real Transformer? An ideal transformer is a theoretical model of a practical transformer without losses. In short: Transformer + 0%…

• ## Difference Between Single Phase and Three Phase Transformer

What is the Difference Between 1-Phase Transformer & 3-Phase Transformer? We all know that a transformer in an electrical machine, which is used to step-up or step-down the level of…

• ## Cooling Methods of a Transformer

Types of Cooling Methods of Electrical Transformers A transformer is a static electromagnetic device that is used to convert electrical energy from one voltage level to another voltage level. During…

• ## Scott-T Connection of Transformer

What is Scott Connection or Scott-T Transformer? Scot Connection Scott connection is a type of connection of transformer that used to get two-phase power supply from three-phase source or vice-versa.…

• ## Polarity Test of a Transformer – Circuit Diagram and Working

What is a Polarity Test of a Transformer? Circuit and Working of Additive & Subtractive Polarity Tests In two winding transformers, one terminal is positive with respect to the other…

• ## Sumpner’s Test or Back-to-Back Test on a Transformer

Sumpner’s Test or Back-To-Back Test on Transformer for Efficiency, Voltage Regulation, & Heating Effect The open-circuit test and short circuit test are performed to determine the equivalent circuit parameter. With…

• ## Short Circuit Test and Open Circuit Test of Transformer

Open Circuit (No Load) and Short Circuit (On-Load) Test of a Transformer As we have seen in the equivalent circuit of transformer, there are four main parameters; Equivalent resistance (R01)…

• ## Equivalent Circuit of Electrical Transformer

What is the Equivalent Circuit of Transformer? An equivalent circuit of a transformer is a graphical representation of a transformer circuit in which the resistance and leakage reactance are imagined…