Power contract for Thuthuka Group

April 2009 News

Gauteng-based engineering firm, Thuthuka Group (TGL), has been awarded the build, operate and maintain (BOM) contract to provide a 10 MVA power plant for Boynton Platinum’s Pilanesberg Mine, located some 60 km north-west of Rustenburg.

The plant will generate power parallel with Eskom on the demand side of the mine through a 10 MVA incoming circuit breaker, and will synchronise with Eskom as the primary power supply.

The plant itself consists of seven generator sets, each comprising a 1245 kWe diesel-driven Mitsubishi engine with a Stamford alternator. The latter provides 400 V at 50 Hz. The 400 V are stepped up individually by seven 400 V/11 kV transformers. The 11 kV is then synchronised with the Eskom power supply and, through Matelec switchgear, protection, monitoring and control relays power is supplied to the mine.

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