Energy Efficient 15kV 20kV Step Up Transformer 1250kVA Layer Winding Oil Immersed Type for Unstable Voltage Rural Grid and Long Distance Distribution
1250kVA step-up transformer (15kV/20kV) with low-loss design, disc-type copper winding, and ONAN cooling. Built for harsh environments like mining and unstable grids. Features stable voltage conversion, heavy load capability, and custom voltage options.
15kV Step Up Transformer
,Long Distance Distribution Transformer
The 1250kVA 15kV 20kV Step-Up Oil-Immersed Transformer (Low Loss Design) is engineered for heavy-duty power transmission and voltage boosting applications in mining areas, industrial loads, and harsh environmental power systems.
Featuring a disc-type copper winding structure and optimized magnetic core design, it delivers efficient voltage conversion, stable output performance, and reduced energy loss under continuous high-load operation.
This model is widely applied in mining power systems, remote grid extension, heavy industrial sites, and unstable voltage regions requiring reliable step-up power transformation.
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Low Loss High-Efficiency Design
Optimized core structure reduces no-load loss and improves long-term energy performance.
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Heavy Load Capability
Designed for continuous operation under high current demand in mining and industrial environments.
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Disc-Type Copper Winding Structure
Improves mechanical strength, heat dissipation, and short-circuit resistance.
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Stable Step-Up Voltage Performance
Ensures reliable voltage conversion from 15kV to 20kV under fluctuating load conditions.
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Rugged Design for Harsh Environments
Suitable for dust, heat, and outdoor exposure with reinforced tank protection and insulation system.
| Parameter | Specification |
|---|---|
| Rated Capacity | 1250 kVA |
| Type | Step-Up Transformer |
| Primary Voltage | 0.4kV |
| Secondary Voltage | 15 kV 20 kV |
| Phase | Three Phase |
| Cooling Method | ONAN |
| Frequency | 50 Hz / 60 Hz |
| Core Material | Cold-rolled silicon steel |
| Winding Type | Disc-type copper coil |
| Insulation Class | A / F |
| Impedance | 4.5% |
| Tap Changer | Off-circuit |
| Insulating Medium | Mineral oil |
| Tank Type | Sealed / Conservator type |
| Installation Type | Outdoor / Ground mounted |
In regions with unstable grid conditions, the following situations are common:
- Voltage fluctuation during peak load periods
- Unstable power supply in remote mining areas
- Equipment stress caused by inconsistent load distribution
- Reduced operational stability of downstream systems
- High-efficiency magnetic core supporting stable energy conversion
- Disc-type copper winding improving load adaptability
- Step-up voltage design ensuring consistent output transformation
- Reinforced insulation system supporting continuous operation
- ONAN cooling structure maintaining thermal balance under load
These design features help maintain stable power transmission in demanding operating environments.
This 1250kVA step-up transformer is suitable for:
- Mining power supply systems
- Heavy industrial power distribution
- Remote grid extension projects
- Construction and infrastructure power systems
- Oil field and energy extraction sites
- High-load mechanical operation zones
- Off-grid and unstable voltage regions
- Large-scale outdoor power transmission setups
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Can this transformer operate under unstable voltage conditions?
Yes. The step-up design supports stable voltage conversion under fluctuating input conditions.
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Is this transformer suitable for mining environments?
Yes. It is designed for heavy load operation and outdoor harsh conditions such as dust and temperature variation.
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Can the voltage ratio be adjusted for different projects?
Yes. Voltage configuration and tap options can be adapted based on system requirements.
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What cooling method is used?
ONAN (Oil Natural Air Natural) cooling is applied for stable thermal performance.
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What testing is performed before use?
Standard electrical testing includes insulation test, ratio test, impedance check, and loss measurement.
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Q6: Does it support long-distance power transmission systems?
Yes. It is suitable for step-up transmission in remote and heavy-load environments.
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