Power transformer manufacturer in China
POWER TRANSFORMER MANUFACTURER & FACTORY

Power Transformers for Industrial, Power Plant, Solar

Huasheng is a premier power transformer manufacturers in China. We engineer oil-filled power transformers for transmission substations, power plants, and renewable energy grids. Whether you need step down transformers for distribution or step up units for power generation. We deliver custom-built solutions to international standards.

  • 110kV Transformer Series: 6.3 MVA to 80 MVA
  • 220kV Transformer Series: 90 MVA to 400 MVA
  • Custom Two-Winding & Three-Winding Designs
  • Flexible Configurations: OLTC, ONAN, ONAF, ODAF
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Largest POWER TRANSFORMER

Power Transformers Core Series

Huasheng manufactures 110kV and 220kV oil-immersed power transformers. They are built for heavy-duty power grids and industrial transmission. We customize every unit for demanding environments. Each power transformer withstands extreme heat, mechanical force, and electrical stress.

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110kV oil-filled power transformer for a substation

110kV Power Transformer

This series uses for 110kV substations, industrial step down stations, industrial parks, and renewable energy projects. Provide stable and efficient voltage conversion. Featuring custom two-winding or three-winding arrangements.

Typical Specifications

  • Capacity: 6.3–80MVA
  • High Voltage: 110kV ± 8 × 1.25%
  • Typical Lower Voltages: 35kV, 10.5kV, or 6.3kV
  • Cooling: ONAN or ONAF
  • Tap Changer: On-Load Tap Changer available
  • Winding Structure: Two-winding or three-winding
220kV oil-filled power transformer for a transmission grid

220kV Power Transformer

The 220kv largest power transformers is designed for New energy step up station, regional grid hubs, Urban power grid load center. Provides maximum power density and operational safety. Oil immersed, three-winding designs are common. Cooling, insulation, impedance, and monitoring functions are customized for the actual duty.

Typical Specifications

  • Capacity: 90–400MVA
  • High Voltage: 230kV ± 8 × 1.25%
  • Typical Medium Voltage: 121kV
  • Typical Lower Voltage: 10.5kV or 38.5kV
  • Cooling: ONAN, ONAF, or ODAF
  • Tap Changer: On-Load Tap Changer
  • Winding Structure: Three-winding typical
Core Engineering & Protection Features

Power Transformer Design Features

Power supply transformer require precise engineering design and robust protection. Huasheng’s design ensure grid safety, thermal stability, and a long service life.

Electrical Steel Core

The core affects no-load loss, excitation current, and sound level. We build high-permeability steel cores to match your exact performance targets.

Windings for Short-Circuit Duty

Windings are designed around short-circuit force, temperature rise, insulation margin, and impulse voltage. They can cope with extreme grid duty.

Insulation Coordination

Insulation levels match your voltage class, lightning impulse needs, and local climate. This prevents dielectric breakdown during severe power surges.

On-Load Tap Changing

An on-load tap changer (OLTC) adjusts output voltage without power interruptions. Its range and control method are set by the grid requirement.

Cooling and Temperature Control

We configure radiators, cooling fans, and oil pumps to manage internal heat. Automated controls keep operating temperatures safe even at full load.

Protection and Monitoring

Units include Buchholz relays, pressure relief valves, oil gauges, and temperature sensors. We also provide online monitoring interfaces for smart grid integration.

Power transformer manufacturing factory in China
QUALITY Assurance

Quality Control for Electrical Power Transformer

Whether it’s a step-up or step down power transformer. Huasheng follows a four-stage quality control process. Each stage has defined inspection points. The relevant records are prepared for product traceability and delivery checks. You can confidently entrust your project to Huasheng Transformers.

Raw Materials

Electrical steel, winding conductors, insulation materials, transformer oil, and sealing parts.

Production Process

Coil dimensions, insulation clearance, clamping force, welding seal, and vacuum oil filling.

Factory Testing

Transformer ratio, vector group, DC resistance, insulation resistance, withstand voltage, and no-load/load losses.

Packing & Shipment

Accessory check, nameplate verification, moisture and impact protection, and transport securing.

HIGH-VOLTAGE PROJECT APPLICATIONS

Power Transformers for Grid, Industry, and Generation

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Power transformer for a utility substation

Utility Substations

For city distribution hubs, regional supply points, industrial park substations, and major customer connections.

Power transformer for an industrial power system

Industrial Power Transformer

For mining, metallurgy, manufacturing parks, chemical plants, and other large facilities with a dedicated high-voltage supply system.

Power station transformer for grid connection

Power Station Transformer

For power generation and major grid connection projects. The voltage combination and power-flow direction are set by the station design.

Solar power transformer for renewable energy projects

Solar Power Transformer

For solar power projects that need voltage step-up for grid export or step-down power for plant equipment and auxiliary loads.

FAQs

Power Transformer Questions

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Send your single-line diagram, tender specification, or existing nameplate data. We will review the main parameters before quotation.

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