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What is an Oil-Immersed ESP Transformer? Working Principle & Applications

2026/03/25
Último blog de la compañía What is an Oil-Immersed ESP Transformer? Working Principle & Applications
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Oil-immersed electrostatic precipitator transformer (ESP Transformer) is a specialized high-voltage power supply device used in electrostatic dust collection systems. It converts low-voltage AC power into stable high-voltage DC output, enabling efficient removal of dust and particulate matter from industrial exhaust gases.


1.Why do we have to use oil immersed?


Stronger heat dissipation capability

Oil cooling ensures efficient heat dissipation, suitable for continuous heavy-duty operation.

Higher insulation performance

Transformer oil provides superior insulation under high voltage conditions.

More suitable for harsh environments

Performs reliably in:

  • High dust environments
  • High humidity areas
  • Outdoor industrial conditions

2.Oil-immersed ESP transformers are widely used in:

Industrial sectors:

  • Cement plants
  • Steel mills
  • Thermal power plants
  • Mining operations

Chemical processing plants


3.When selecting an ESP transformer, the following factors must be considered:

  1. Required output voltage level
  2. Dust concentration and type
  3. Operating environment (temperature, humidity, altitude)
  4. Continuous operation requirements
  5. Matching with ESP system design

Professional customization is essential for optimal performance.


4. With increasingly strict global environmental regulations, electrostatic precipitator systems are becoming more widely adopted. As a key component, ESP transformers are evolving towards:

  • Higher voltage output
  • Better energy efficiency
  • Intelligent control integration
  • Compact and integrated design

5.Looking for a reliable ESP transformer solution?
We provide customized oil-immersed electrostatic precipitator transformers tailored to your project requirements.

 Contact us now to get:

  • Technical consultation
  • Custom design solution
  • Fast quotation within 24 hours


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