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30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request
30kVA~1000kVASingle-Phase Transformer  | Customization Available Upon Request

30kVA~1000kVASingle-Phase Transformer | Customization Available Upon Request

Customization Available Upon Request

 

Product Overview

HONGWEI oil-immersed transformers, as essential power distribution units, boast high efficiency, energy conservation, stable performance and exceptional reliability. Crafted via sophisticated manufacturing techniques, the transformers incorporate top-grade silicon steel cores, high-conductivity copper coils and eco-friendly insulating oil.

Boasting low energy loss, superior heat dissipation, robust short-circuit endurance and a long operational lifespan, the product ensures the safe transformation and efficient delivery of electric power. Compatible with diverse voltage specifications, it serves as vital equipment for power grid systems, industrial operations and the power supply of large-scale construction projects.

Core Technical Parameters

Single-Phase Oil-Immersed Transformers 

Parameter Item

Specification Requirements

Remarks

Capacity Range

5kVA~1000kVA

Customizable special capacity on demand

Voltage Level

High Voltage: 10kV/6kV; Low Voltage: 0.4kV/0.23kV

Voltage deviation ≤±5%, supporting customization of special voltages

Insulation Class

Class A (105℃)

Mineral insulating oil adopted, with stable insulation performance

Cooling Method

ONAN (Oil-Immersed Natural Cooling)

ONAF (Oil-Immersed Forced Air Cooling) optional for large-capacity models

Energy Efficiency Grade

S9 (Level 3), S11 (Level 2), S13 (Level 1)

S13 series features low no-load loss and significant energy-saving effect

Noise Level

≤55dB (Capacity ≤500kVA)

Compliant with residential area noise standards

Protection Class

IP40

IP54 optional for outdoor models, dustproof and waterproof

Operating Environment

Temperature -20℃~+40℃, Humidity RH≤95%, Altitude ≤1000m

Custom derating design required for high altitude

 

Manufacturer's Production Capacity and Strength

Customization Support

Customization Support
  • 01 Specification Customization

    We support customized design of core electrical parameters for power transformers, including rated capacity, voltage level, short-circuit impedance, connection group, insulation class and cooling method. Our products cover a full range of specifications from 25kVA to 20000kVA and above, adapting to different power grid and load working conditions.

  • 02 Structure Customization

    We can customize the overall structure of transformers according to installation scenarios, including oil-immersed fully sealed / fully corrugated / conservator structures, and dry-type cast / open / encapsulated structures. We also provide personalized design for enclosure forms (indoor/outdoor), installation methods (pole-mounted / pad-mounted / prefabricated substation) and heat dissipation configurations (natural air cooling / forced air cooling), meeting space constraints and protection class requirements from IP20 to IP54.
     

  • 03 Accessory Customization

    We offer optional professional accessories as required, including temperature control/display devices, fan cooling systems, on-load tap changers, pressure relief valves, gas relays, intelligent monitoring modules (IoT terminals), protective relays, anti-corrosion coatings/stainless steel enclosures, etc., realizing full-featured configurations from basic protection to intelligent operation and maintenance.

  • 04 Special Environment Adaptation

    For special working conditions such as high altitude (≥3000m), high/low temperature (-40℃~+55℃), coastal salt spray, chemical corrosion, dust and humidity, and earthquake zones, we provide customized protection solutions, including enhanced insulation for high altitude, anti-condensation and moisture-proof systems, anti-corrosion coatings, seismic reinforcement structures and dust-proof sealing treatment, ensuring stable operation of transformers in extreme environments.

  • 05 OEM/ODM Services

    We provide full-process OEM/ODM services for power transformers. We can customize nameplates, appearance coatings and packaging according to customers' brand requirements, or deeply participate in project R&D, from preliminary scheme design and drawing optimization to sample trial production and mass production, to create exclusive transformer solutions for customers, adapting to various fields such as new energy, industry, construction and power grid projects.

Inspection and Testing

Overseas Customer Cases

Wind Power Projects

Wind Power Projects

Photovoltaic projects

Photovoltaic projects

Pole-Mounted Transformer Projects

Pole-Mounted Transformer Projects

Construction Projects

Construction Projects

Data Center Projects

Data Center Projects

Get Your Custom Quote

If you need to know more information about transformers, please contact us

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