Even though the basic functions of the oil used in transformers are heat conduction and electrical insulation, there are many other properties which make a particular oil eminently suitable. Properties of good transformer oil are explained in this article. Organic oils of vegetative or animal origin are good insulators but tend to decompose giving rise to acidic by-products … [Read more...] about Properties of Good Transformer Oil
Transformer
Percentage Impedance of Transformer and Its Calculation
What is the Percentage Impedance? The percentage impedance of a transformer is marked on most nameplates - but what is it and what does the Z% figure mean? The impedance of a transformer is the total opposition offered to alternating current. This may be calculated for each winding. However, a rather simple test provides a practical method of measuring the equivalent … [Read more...] about Percentage Impedance of Transformer and Its Calculation
Core Type and Shell Type Transformers
Depending on the type of construction used, the transformers are classified into two categories. Core type Transformer Shell type Transformer Difference between Power Transformer and Distribution Transformer Core Type Transformer In core type construction, as shown in the figure, the coils are wound around the two limbs of a rectangular magnetic core. Each … [Read more...] about Core Type and Shell Type Transformers
Transformer Oil Sampling / Testing : Video Training
Oil testing in a transformer is just as a blood test in human body. A blood test provides a doctor with a wealth of information about the health of a patient. A sample of transformer oil, taken correctly, can tell service engineers a great deal about the condition of a transformer.Oil is used both to cool the transformer and to insulate internal components. Because it bathes … [Read more...] about Transformer Oil Sampling / Testing : Video Training
All Day (Energy) Efficiency of Transformer
The ratio of output in kWh to the input in kWh of a transformer over a 24-hour period is known as all-day efficiency. The ordinary or commercial efficiency of a transformer is defined as the ratio of output power to the input power. Commercial efficiency = Output power ∕ Input power Importance of All-Day Efficiency There are certain types of transformers whose … [Read more...] about All Day (Energy) Efficiency of Transformer