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Custom-made transformer technology will be installed in three newly developed wind farms in the Northern Cape. Pic credit: Actom

Last week, South African supplier of electrical equipment and services, Actom Power Transformers, announced that its installation of custom-made transformers for three wind farms is scheduled for completion in April 2016.

The transformers are for three new wind farms being developed in the Northern Cape as part of the national renewable energy programme.

Efficient and reliable transformer tech

The latest order is for a total of 157 x 2700 kVA pad-mounted oil-natural air-natural (ONAN) transformers, which include a unique feature that is new to the South African market.

This special feature has a proven track record internationally, especially in the US where it has been widely used for many years in wind farm and general distribution applications, Actom said in a statement.

Gert Kriel, ACTOM Power Transformers’ Sales Manager, explained: “This involves making provision for accommodating the load-break switch together with current limiting fuses inside the transformer tank by mounting them under oil, in place of the usual external arrangement as applied to package transformers.”

Accoring to Kriel this has the advantage of reducing the manufacturing cost and therefore the selling price.

Proving efficient delivery

According to a company statement, the order was placed by local Consolidated Power Projects (CONCO), the electrical balance of plant contractor for the Noupoort, Khobab and Loeriesfontein wind farms. The farms comprise of 35, 61 and 61 wind turbine generators respectively.

Rein Dijkstra, CONCO’s Contracts Manager, Renewable Energy concluded that previous projects which were supplied with specialist technology such as this, proved to be efficient and reliable, “demonstrating their capability of meeting the special requirements applicable to wind farms.”

 

Home page pic credit: Actom