29 July 2014
JSC “Bratsk aluminium smelter” (BrAZ) is the largest aluminium producing facility not only in Russia but also in the world. It produces 30% of aluminium in Russia and near 4% of aluminium in the world. The plant is located on the skirts of Bratsk city, 60 km away from Bratsk hydroelectric station. The smelter was commissioned in 1966, now it is a subsidiary company of JSC “RusAL”.
Flexible electronic fiber-optical current transformers (FEFOCT) produced by CJSC “Profotech” will be installed on BrAZ to measure direct current in aluminium pot rooms, transfer and save data in a database of the plant.
FEFOCT ensures stability of metrological characteristics during the whole recalibration cycle in a very dusty environment containing carbon particles. Due to FEFOCT construction, it’s possible to install and uninstall sensitive element from the conductive bus bar without bus bar dismantling, moreover, there is no need to calibrate equipment on the site during start-up and adjustment operations. FEFOCT power supply is tolerant to voltage fall, short-circuit and electromagnetic fields.
FEFOCT ensures long-term stability of measurements. Recalibration cycle of the device is not less than 3 years.