Power Transformer is a static electrical device that transfers electrical energy between circuits through electromagnetic induction. They remain critical components of electrical grids, used primarily to adjust voltage levels for efficient long-distance power transmission and local distribution without changing the frequency.
Technical Specifications
|
Feature
|
Specification
|
|
Type
|
Oil Cooled Type
|
|
Rating
|
Upto 10 MVA
|
|
Voltage Class
|
Upto 66kV
|
|
Voltage Ratio
|
33kV/22kV/11kV/6.6kV/3.3kV
|
|
Frequency
|
50 Hz
|
|
Phase
|
3 Phase
|
|
Cooling Type
|
ONAN/ONAF
|
|
Vector Group
|
As Required
|
|
Winding Material
|
Copper
|
|
Insulation Class
|
A
|
|
Tap Range
|
Off Circuit Or On-Load Tap Changers for HV/LV Variation As Per Customers Specification
|
|
Impedance
|
In Line With Applicable Standards/ Customers Specification
|
|
Applicable Standard
|
IS, IEC, IEEE Etc.
|
Standard Tests
- Winding Resistance Measurements
- Ratio and Polarity Measurements
- Exciting Current and No Load Losses
- Impedance and Load Losses Measurements
- AC Dielectric Test
- Induced Voltage Test
- Core Ground Test
- Oil BDV Test
- Magnetic Balance Test
- Insulation Resistance Test
- Vector Group Test
- Capacitance and Tan-Delta Test
Optional Tests
- Temperature Rise
- Sound Level
- Radio Influence Voltage
- Partial Discharges
- Basic Insulation Impulse Level
- SFRA Test
- Short circuit Test
- Knee Point Voltage of bushing CT
- Polarity and ratio test of bushing CT
Brands
§ ABB | RPPL | Synergy | Rishabh | Telwne | T&R | CG Power
Common Applications
§ Cement Industries | Steel Industries | Chemical Industries | Refineries | Electricity Boards | Infrastructure | Utilities | Power Plants | Commericial