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220kV High Voltage Oil-filled Power Transformer

  • Optimized for High-Voltage Transmission & Grid Stability Support
  • Reliable Power Infrastructure Engineered for Diverse Operational Environments
  • European EcoDesign Compliant Proven in Spain
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Technical Overview

Parameter

Standard Range (Customizable)

Primary Voltage

220kV / 230kV

Rated Capacity

20MVA to 360MVA

Frequency

50Hz / 60Hz

Vector Group

YNd11, YNyn0, or as per requirement

Tap Changer

On-Load Tap Changer (OLTC) or Off-Circuit Tap Changer

Cooling Method

ONAN / ONAF / OFAF

Standards

IEC 60076, IEEE C57, AS, GB/T



The CEEG 220kV series oil-immersed power transformer is engineered to serve as a critical link in high-voltage networks. By leveraging decades of specialized engineering experience and high-grade materials, our transformers provide consistent performance across complex grid conditions, especially for modern grids with high renewable energy penetration.

Product Features

1. Proven Reliability in Demanding Conditions

  • Short-Circuit Strength: Engineered with high-mechanical-strength windings to withstand electromagnetic stresses during faults.

  • Thermal Management: Efficient ONAN/ONAF cooling systems ensure stable operation under continuous full-load conditions, even in high-ambient-temperature regions.

  • Robust Insulation: Multi-stage insulation processing ensures a long service life and high dielectric strength.


2. Superior Energy Efficiency & Low Loss

  • By utilizing high-permeability, grain-oriented silicon steel and advanced step-lap core stacking technology, CEEG transformers significantly reduce no-load and load losses.

  • Global Compliance: Meets and exceeds efficiency benchmarks including IEC 60076, IEEE/ANSI standards, and EU EcoDesign requirements.

  • Cost-Effective: Lower operational losses translate to significant long-term savings for grid operators.


3. Sustainable Design and Environmental Compliance

  • Low Noise Design: Vibration-dampening structures ensure compliance with environmental regulations in residential and urban areas.

  • Sustainable Integration: By helping stabilize grids impacted by renewable energy integration, these transformers play a direct role in reducing carbon emissions and supporting the transition to cleaner energy systems.

Applications

  1. Utility Substations: Primary step-down or step-up stations for national grids.

  2. Renewable Energy: Collector substations for large-scale wind and solar farms.

  3. Industrial Power: Reliable energy for steel mills, mining operations, and petrochemical plants.

  4. Infrastructure: Powering high-speed rail and mega-city developments.


Referencing Case: 220kV High-Voltage Power Transformer Supplied for Spain


CEEG 220KV oil-filled transformer   CEEG 230kV power transformer


CEEG 220kv/1800000kva oil transformer   CEEG 220kV transformer in TÜV and DEKRA recognized test hall




CEEG Oil-Type Transformer Manufacturing Process



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