10 July 2014
Irkutsk aluminium smelter (IrkAZ) is located in Shelikhov city of Irkutsk Region, it’s one of the largest and oldest aluminium smelters in East Siberia and Russian Federation and a subsidiary company of JSC “RusAL”
As a part of energy efficiency improvement program, flexible electronic fiber-optical current transformers (FEFOCT) with the parameters given below will be installed on IrkAZ to measure direct current in aluminium pot rooms, transfer and save data.
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Rated current, kA - 175;
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Conductive busbar dimension (Width х Height), mm – 1740x640;
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Distance between sensitive fiber-optical element and optoelectronic conversion module, m - 50;
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Number of outputs proportional to measured current, pcs - 6;
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Switching interfaces:
- Current analog;
- Modbus RS-485;
- Profibus;
- Relay interfaces:
- Overcurrent protection relay output;
- Reverse current protection relay output;
- Thermal protection relay output;
- Operating temperatures range:
- Instrument module: -30 to +40;
- Sensitive element: - 40 to +50.
In 2013 Profotech installed FEFOCT on IrkAZ as a primary instrument device for direct current measurement in aluminium pot rooms.
Installation supervision and start-up and adjustment operations will be performed by specialists of Profotech.