ABB successfully commissioned rectifier stations at Qatalum

ABB has successfully commissioned ten complete rectifier units at Qatalum?s primary aluminium plant. Handover of the plant to the customer took place on December 15th, 2009.

ABB acted as EPC contractor for the rectifier stations and was responsible for engineering, civil design, material delivery, training, documentation, installation and commissioning. The scope of supply included ten high voltage rectifier units (each 1650V, 85kA) including control and protection systems, two DC collector busbar systems (each 340kA) including ABB?s fiber optic current sensor (FOCS), ten regulating and rectifier transformers including reactive power and harmonic filtering systems, two SCADA systems (supervisory control and data acquisition), as well as redundant auxiliary systems (transformers, low voltage distribution, motor control centers, battery systems, uninterruptible power supply, fire alarm and extinction systems, air-conditioning). ABB also delivered and installed 47 kilometers of high voltage cables (220kV) to connect the rectifier stations to the dedicated 1250 MW power plant.