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Desalter transformer for crude oil electrostatic desalting in oilfield and refinery

Desalter Transformer

Desalter transformer product overview Illustrative role of the transformer in an electrostatic desalter system Project-configured electrical and installation options Key visible construction features of the desalter transformer Representative refinery, oilfield and offshore application environments Authentic factory photograph of a crated product being loaded for delivery

Six decision-focused product images: overview, system role, configuration, construction, site conditions, and delivery workflow.

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Desalter Transformer
Explosion-Proof for Crude Oil Electrostatic Desalting

This desalter transformer delivers the high-voltage field required for crude oil electrostatic desalting, ensuring efficient water and salt separation in oilfield and refinery operations.

Engineered for extreme reliability—from desert installations to offshore FPSO platforms—we also offer complete 1:1 custom drop-in replacement to perfectly match the dimensions and interfaces of your legacy equipment.

  • 1:1 custom drop-in replacement
  • 0–5 adjustable taps for stable output
  • AC or DC power supply
  • Adaptable to harsh conditions
Electrical performance

Stable high-voltage output, configured for the project

Standard ratings provide a starting point; input, output, rectification and interfaces are engineered around the existing desalter system.

50–250kVA rated power
380 / 400 / 6000V catalog input references
13–40kV AC catalog output range
100%reactance design
Project engineering

AC / DC schemes, 0–5 tap regulation, rectifier configurations and 1:1 drop-in replacement are available. Final values are governed by the technical agreement and site boundary conditions.

Representative refinery, oilfield and offshore application environments
Site conditions

Built for refineries, oilfields and offshore service

Structural protection is engineered for dust, salt atmosphere, temperature variation and continuous duty across onshore plants and offshore FPSO modules.

Ambient and altitude
Confirmed from project data
Enclosure and ingress protection
Confirmed for the installation boundary
Hazardous-area requirement
Confirmed by jurisdiction and contracted certification scope
Surface protection
Selected for the stated site environment

No Ex marking or enclosure rating should be inferred without matching the contracted manufacturer, model, certificate schedule and project jurisdiction.

Engineering insights

Diagnose the desalting system, not only the transformer

Electrical behaviour must be read together with crude properties, wash water, mixing, interface condition and the electrode load.

Operations

Why is the oil-water interface unstable or unclear?

Separate instrument symptoms from emulsion, solids, mixing and withdrawal causes.

 Troubleshooting

Why is salt still high when outlet water appears normal?

Use a staged evidence path instead of adjusting voltage or chemical blindly.

 Electrical

How should desalter power faults be investigated?

Review the power unit as part of the complete electro-process system.
Project questions

What must be confirmed before quotation?

Can a desalter transformer be selected from kVA alone?

No. Supply, waveform, secondary voltage definition, continuous and transient current, electrode arrangement, process load cases and protection philosophy must be confirmed together.

Are the catalog dimensions and ratings final?

No. They are reference values. Final ratings, outline, bushings, terminals, cable entry, monitoring and installation interfaces follow the approved project data and drawings.

What operating cases should be supplied?

Provide normal duty, startup, turndown, conductive-crude or water-carryover cases, expected voltage/current behaviour, hazardous-area boundary and site ambient conditions.