Industrial Distribution Transformer Project

Brazil

Industrial Distribution Transformer Project

Country: Brazil

Application: Industrial Power Distribution
Product: Oil-Immersed Distribution Transformer
Typical Voltage: 13.8kV / 0.4kV
Frequency: 60Hz

1.Project Overview

Brazil’s industrial sector requires reliable medium-voltage distribution systems for factories, manufacturing facilities and commercial infrastructure.

For this industrial power distribution application, LBAJI developed a customized oil-immersed transformer solution designed to convert medium-voltage electricity into low-voltage power for industrial loads.

Brazil’s distribution infrastructure includes 13.8kV and 34.5kV medium-voltage systems, making 13.8kV an appropriate reference configuration for this type of project.

2.Project Challenge

The customer required:

  • Reliable medium-voltage power conversion
  • Stable voltage output
  • Low transformer losses
  • Long-term outdoor operation
  • Easy maintenance
  • Reliable protection

3.LBAJI Solution

LBAJI supplied an oil-immersed distribution transformer integrated with the customer’s power distribution system.

Main solution:

  • 8kV oil-immersed transformer
  • High-voltage terminals
  • Low-voltage terminals
  • Tap-changing arrangement
  • Oil temperature monitoring
  • Pressure relief device
  • Lightning protection
  • Grounding connection

4.Technical Data

Parameter Reference
Primary Voltage 13.8kV
Secondary Voltage 0.4kV
Frequency 60Hz
Transformer Type Oil-Immersed
Installation Outdoor
Application Industrial Distribution

5.Products Supplied

Oil-Immersed Distribution Transformer

Suggested configuration:

  • Primary Voltage: 13.8kV / 0.4kV
    Secondary Voltage: 380/220V
  • Frequency: 60Hz
  • Capacity: 500–2500kVA
  • Cooling: ONAN
  • Installation: Outdoor

Final ratings should be confirmed according to the actual project specification.

6.Manufacturing & Testing

Before shipment, the transformer undergoes a controlled production and quality inspection process.

Key production stages include:

Silicon Steel Cutting → Core Stacking → Coil Winding → Insulation → Transformer Assembly → Oil Filling → Electrical Testing → Final Inspection

Testing can include:

  • Winding resistance test
  • Insulation resistance test
  • Ratio test
  • No-load loss test
  • Load loss test
  • Applied voltage test
  • Induced voltage test

7.Packing & Shipment

The transformer is prepared for international transportation with reinforced export packaging.

Recommended gallery:

  1. Finished transformer
  2. Product nameplate
  3. Protective packing
  4. Wooden case / steel frame
  5. Container loading
  6. Container sealing
  7. Port shipment

8.Installation & Commissioning

After arrival in Brazil, the equipment is unloaded and positioned on the prepared transformer foundation.

The installation process includes:

  • Transformer positioning
  • Cable connection
  • Grounding
  • Protection installation
  • LV connection
  • Electrical testing
  • Energization

9.Customer Benefits

The proposed solution provides:

  • Stable power distribution
  • Reliable medium-voltage transformation
  • Efficient operation
  • Easy maintenance
  • Long service life
  • International export compatibility