220kV Power Transformer
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
220kV Power Transformers
120000 kVA 220 kV Oil-Immersed power Transformer
The backbone power grid hubs at 220KV level generally suffer from insufficient capacity reserves and high losses during long-distance power transmission. Most purchasers also encounter difficulties in selecting equipment due to low compatibility with existing systems and insufficient post-operation maintenance support. To address these issues, we have introduced the 120000KVA/220KV super- Large Power Transformer , which adopts a high-standard Oil Immersed Transformer design. It can be compatible with Dry Type Transformer for various operating environments and is integrated with Box Type Substation , High And Low Voltage Switchgear for unified operation. It also suits the grid connection of Combined Photovoltaic Substations and is compatible with Electric Power Converter to enhance the accuracy of power regulation. After deployment, this equipment can significantly enhance the carrying capacity of the regional power grid, reduce high-power transmission losses, ensure continuous and stable power supply, and mainly serve national-level 220KV hub substations, billion-kilowatt-level new energy bases, and super-large industrial clusters. With ultra-high capacity and high reliability as its core value, it provides solid support for key power nodes.
- Product type
- 220kV Power Transformer
- Rated capacity
- 120,000 kVA
- Voltage class
- 220 kV
- Cooling
- ONAN / ONAF / OFAF (project-specific)
- Tap changer
- Off-circuit or on-load, project-specific
- Impedance
- Calculated to grid fault level and parallel operation
Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.
- Routine test report with the unit
- English GA drawing and O&M manual
- Copper or aluminium winding options
- 50 Hz / 60 Hz and harsh-site options
Product overview
The backbone power grid hubs at 220KV level generally suffer from insufficient capacity reserves and high losses during long-distance power transmission. Most purchasers also encounter difficulties in selecting equipment due to low compatibility with existing systems and insufficient post-operation maintenance support. To address these issues, we have introduced the 120000KVA/220KV super- Large Power Transformer , which adopts a high-standard Oil Immersed Transformer design. It can be compatible with Dry Type Transformer for various operating environments and is integrated with Box Type Substation , High And Low Voltage Switchgear for unified operation. It also suits the grid connection of Combined Photovoltaic Substations and is compatible with Electric Power Converter to enhance the accuracy of power regulation. After deployment, this equipment can significantly enhance the carrying capacity of the regional power grid, reduce high-power transmission losses, ensure continuous and stable power supply, and mainly serve national-level 220KV hub substations, billion-kilowatt-level new energy bases, and super-large industrial clusters. With ultra-high capacity and high reliability as its core value, it provides solid support for key power nodes.
Design features
What the design is built around
Ultra-large capacity stable output
The 120000KVA rated capacity combined with 220KV high-voltage conditions offers outstanding shock resistance and short-circuit protection capabilities, with low long-term full-load operation losses, and is suitable for large-power grid connection and hub power supply scenarios.
Comprehensive compatibility for all scenarios
It can be flexibly connected with various distribution systems, and does not require large-scale renovations to work in coordination with existing switch equipment, box-type substations, and new energy grid connection devices.
Tips
During the operation of the equipment, it is necessary to regularly monitor the oil level, oil quality and temperature rise of the Oil Immersed Transformer. When it is in联动with the high-voltage cabinet and converter， avoid frequent overload to extend the overall service life.
Typical specification
Specifications to confirm on the datasheet
| Product type | 220kV Power Transformer |
|---|---|
| Rated capacity | 120,000 kVA |
| Voltage class | 220 kV |
| Cooling | ONAN / ONAF / OFAF (project-specific) |
| Tap changer | Off-circuit or on-load, project-specific |
| Impedance | Calculated to grid fault level and parallel operation |
| Standards | GB 1094.1, GB/T 6451, IEC 60076 |
| Testing | Routine tests plus type and special tests on request |
The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.
Typical applications
- 220 kV transmission substations
- Large generation plants
- Renewable-energy hubs
- Industrial complexes
- Grid reinforcement
Confirm before ordering
- Rated capacity, voltage ratio and tap range
- Impedance, fault level and parallel operation
- Ambient temperature, altitude and enclosure
- Winding material, losses and efficiency class
- Terminations, protection and monitoring
- Tests, inspection, packing and shipping limits
Buyer questions
FAQ for 120000 kVA 220 kV Oil-Immersed power Transformer
Can the equipment be directly connected to the existing 220KV power grid and adapted for Combined Photovoltaic Substations?
Is professional team required for daily maintenance, and is the maintenance cost high?
How are quality assurance and after-sales response guaranteed?
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