Safonovsky electromachine-building plant which is a part of Ruselprom elctrotechnical concern manufactured and supplied STD-3150-23UKhL4 heavy non-standard turboengine rated at 3150 kW, voltage is 10 kV, speed is 3000 rpm. Electric engine was developed under special order of Aluminium of Kazakhstan JSC. It will be used as the drive for К-500-61-1 turbocompressor and will replace the obsolete SТМ-6000 engine which is in operation since 1960-s.