Transformer Losses
Transformer losses are a major factor in the cost of electricity. By understanding the causes of transformer losses and how to reduce them,
Explore the world of Electronics
Explore the world of Electronics
Tag Transformers
Three Phase to Six Phase Transformer
Three single phase transformers, each with one primary winding and identical secondary windings Or a three
Three Phase Transformer Connections
The most commonly used connections for three phase transformers are: Star/Star Delta/Delta Star/Delta Delta/Star Star/Star (Y/y) connection: The connections are shown in Fig. 1(a). This connection is more economical for small size, high voltage transformer. Because the phase voltage is…
Three Phase Transformers
Three phase power distribution and transmission systems require the use of three phase transformers.
Rotating Core and Constant Current Transformers
Rotating Core Transformer It is also called induction regulator. It works on the principle of induction. It is like an induction motor, whose primary is connected to a constant voltage source and secondary produces variable voltages. This type of transformer…
Instrument Transformer
High voltage and current cannot be measured by ordinary volt-meter and ampere meter. Instrument transformer are used for this purpose.
Parallel Operation of Transformer
Need for Parallel operation When load on the system is increased, it is easy to add more transformers to the system instead of replacing smaller transformer by larger ones. If the load on the system is decreased, one or two…
Transformers Tests
A number of tests are made on transformer to determine the voltage ratio, reactance of the windings, magnetizing current, core losses, copper losses, efficiency and temperature rise etc
LVDT – Linear Variable Differential Transformer
LVDT is a positive or magnetic displacement transducer; it is commonly used to measure force, weight, pressure and acceleration
Transformer Resistance Test
Resistance Test on a Transformer Connect an ohmmeter across the two ends of the primary winding of the transformer and record the resistance.
Transformer Characteristic
The power in the primary winding of a transformer transfers to the secondary. This is illustrated in the example below.
Transformer Types
There are basically two transformer types . Step Down Transformer, Step Up Transformer
Transformer
A transformer is an electrical device used to change the value of an alternating voltage. transformers are widely used in electrical work.
Insulation Resistance Test on a Transformer
Class 1 Transformer, Insulation resistance tests between each winding and earth