Products

Power Transformers

• Power Distribution.
• Power Generation.
  • Wind Power Farms.
  • Photovoltaic Power Plants.
  • Cogeneration Power Plants.
  • Biomass Power Plants.
• Special Transformers.
  • Arch and Refining Ovens.
  • Induction and Thermal Treatments Ovens.
  • Electrolisis and Rectification.
  • Railway Traction.
  • Mobile Substations.
  • Transformers on mobile platforms.

Power Autotransformers.

• Motor starting Autotransformers.

Reactancias.

• Ground Reactances.
• Current Limiter Reactances for Ovens

OASA designs transformers depending on the tension requirements and intensities fixed by our clients, using the different existing manufacture technologies of the market.

Nowadays OASA has a capacity of annual production exceeding 2.000.000 KVA, reaching powers of up to 100 MVA and tensions up to 245 kV.

Coils and magnetic circuit form the main core of the transformer.

For coils manufacture, OASA uses only electrolytic pure copper, which is covered with insulating materials. OASA makes coils using technologies of wound in cap and continue wound.

For the construction of the magnetic circuit, magnetic sheet of high quality orientated grain is used. Several technologies of cut and piled up exist currently, being the most usual the STEP-LAP model and the 45 ºstandard model.

This whole set is introduced in the transformer tank and is filled up with insulating mineral oil.

OASA makes the transformers tanks using first quality materials to be able to support work pressures and particular requirements, as in most cases they must be prepared to support the full vacuum.

The transformer is completed with control and regulation components among which are:

• On Load Tap Changer or No Load Tap Changers devices.
• Radiators attached to the tank (ONAN) for the evacuation of the heat build- up in the active part. Optionally can be used (OFAF) air-oil cooler or (OFWF) water-oil cooler.
• Additional Fans to allow the forced refrigeration (ONAN/ONAF) and to obtain more power from the transformer.
• The control devices:
  • Oil Level indicators.
  • Temperature Oil Detectors
  • Temperature Cupper Detectors.
  • Gas Detection Relays.
  • Overpressure Devices.

Once the assembly has concluded, the complete transformer is subjected in our laboratories to the different tests demanded in the regulations and specifications.

OASA Transformadores
Sitemap · Client area.

C/ Amasorrain, nº 2 - 20018 San Sebastián (Gipuzkoa, España)
Tel.: +34 943 36 21 40 Fax: +34 943 36 24 46
E-mail: oasa@oasa-trafo.com