Thyristor rectifiers 63kA/450V
Year: 2015-2017
Process: magnesium electrolysis
Delivery: 6 pcs. local control cabinets for thyristor units (fully digital thyristor control with optic lines for control pulses), master control cabinet, substation operator SCADA control room, potline current optical sensor
Cooling: glycol/air
Semiconductors: thyristors
Scope (“turn-key”): full substation and equipment engineering, manufacturing, software development, erection and commissioning, power quality analysis and recommendations, local stuff training
Specifics: full replacement of existing unit/substation control system, keeping substation in operation.
Thyristor rectifier units 28кА/60V
Year: 2016…2022
Process: VAR (titanium vacuum arc remelting)
Amount: 8 in operation/erection + 7 manufacturing/contracted
Cooling: water/water
Semiconductors: thyristors
Specifics: dry-type embedded transformer, shelter with aluminum walls IP54, auxiliary rectifier for arc stabilizing, each thyristor conductivity and reverse current sensor, fully digital thyristor control with optic lines, optical DC meter, complete factory testing witnessed by the end customer
Thyristor rectifier 25kA/60V
Year: 2019…2022
Process: VAR (titanium vacuum arc remelting)
Amount: 1+1
Cooling: water/water
Semiconductors: thyristors
Specifics: a specific design to meet existing busbar system and place available, auxiliary rectifier for arc stabilizing, each thyristor conductivity and reverse current monitoring, fully digital thyristor control with optic lines for control pulses, optical DC meter, complete factory testing witnessed by the end customer
Rectifier 6.3kA/450V
Year: 2015-2017
Process: nickel electrolysis
Equipment: Rectifier groups
Total amount: 20
Cooling: air direct
Specifics: replacement with new units with the same dimensions and Busbar arrangement
Rectifier 8kA/1000V + overvoltage protection cabinet
Year: 2017
Process: aluminum electrolysis
Total amount: 16
Cooling: air direct
Specifics: replacement with new units with the same dimensions
