35 kV power transformer is an electrical transformer designed for use in power distribution and transmission systems where the primary voltage level is 35 kV.
Typical Characteristics
·Voltage class: 35 kV (high-voltage side)
·Function: Steps voltage up or down between transmission and distribution networks.
·Frequency: 50 Hz or 60 Hz.
·Cooling methods: ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced), etc.
·Insulation: Mineral oil or Vegetable oil depending on application.
·Power ratings: Commonly range from a few hundred kVA to tens of MVA.
Common Applications
·Utility substations
·Industrial plants
·Renewable energy projects (solar and wind farms)
·Mining operations
·Large commercial facilities
Example Rating
A typical transformer nameplate might read:
·Rated Power: 10 MVA
·High Voltage: 35 kV
·Low Voltage: 10.5 kV
·Frequency: 50 Hz
·Cooling: ONAN
·Vector Group: Dyn11
Main Components
·Magnetic core
·High-voltage and low-voltage windings
·Transformer oil
·Bushings
·Conservator tank
·Radiators/cooling system
·Tap changer