Power transformers are used widely to transfer electrical energy in any part of an electrical circuit across the generator and primary circuits of the distribution. Power transformers are widely used either to transform voltages from high to low and low to high, as necessary. If you are looking for power transformers, get in touch with the leading manufacturers of power transformers India for genuine products with a perfect set up and installation done by the trained technical staff and necessary guidance on usage and after sales services.
The most popular power transformer is the liquid immersed type with an average life span of about 30 years. These can be classified as below based on the voltage ranges:
- Smaller power transformers range from 500-7500kVA
- Medium power transformers range from -100 MVA
- Large power transformers range from 100 MVA and above
Applications of Power Transformers – The capability of power transformers to step up or down the voltage ladder enables them to be used in various electrical circuits and several applications. The application areas include transmission and distribution of electrical power in power plants, industrial plants and traditional electric utility companies. These also have high utility in high voltage transmission network to step up or down the voltage levels. The stepping up or down of the voltage and electricity is fed by transmission of heavy loads by these transformers.
The power transformers are also used in the transmission network and are thus not used for domestic or residential purposes in customer premis4es, as voltage fluctuations may occur.
Composition of Power Transformer-The basic body of a Transformer spares is made of metal and is laminated with sheets. It is then fixed into a core or shell type. The basic body of metal or the so called skeleton of the power transformer is absorbed in a fire retardant protecting oil within a tank. The reservoir over the oil tank is built and placed such that the oil which becomes excess can be stored there.
Now the basic metal body is wound and bend to build three 1-phase or a single 3-phase transformer. The three 1-phase transformer would need each bank to be separated from the excess and thus offer continuity of service when one bank stops to function, whereas a single 3-phase transformer, irrespective of core or shell type is unable to function without a single bank! Generally the 3-phase transformers are cheaper with smaller footprints and greater efficiency.
Few specifications of Power Transformers – Generally a power transformer is best judged with maximum power rating, maximum secondary current rating, maximum voltage rating and operating type. Make sure you check for the below specifications while you finalise a power transformer for your project or requirement:
- Phase is 3Ø
- Frequency of 50Hz, 60Hz,
- Primary Voltage should be 22.9 kV
- Secondary Voltage should be 6.6/3.3 kV
- Tap Voltage 23.9-R22.9-21.9-20.9-19.9kV
- Vector Dd0, Dyn11, etc.
Also, do not forget to check that these are manufactured with certified products and these should be certified and tested as per quality standards. So it is always advisable to reach out to the leading and premium manufacturers of power transformers India to ensure you have received genuine products. These need to be installed and handled under supervision and expert hands as these are critical electrical components where a single ignorance may cause damage