Industrial Power Converters

Operating Characteristics

• Connection : Bridge – Double Bridge (Series or Parallel) – Double Star – 2x Double Star

• Type : Thyristor, Diode

• Cooling : Air, Water, Deionized Water

• AC Input Voltage : From 350V-3 ph up to 220kV-3 ph, 50Hz or 60Hz

• DC Output Voltage : Up to 1500V

• DC Output Current : Up to 150kA in only one rectifier cubicle, Up to 450kA with more units in parallel

• DC Output Power :Up to more than 40MW with only one rectifier cubicle

• Control : Current regulation ± 1% standard by means of : -thyristor phase firing delay, -on load tap changer and saturable reactors for diode rectifiers

• Pulses : 6, 12, 18,24 or more

• Standards : IEC 146 – ANSI / IEEE

Protection Features

• O/C, O/V, U/V, phase sequence protection

• Automatic protection against output circuit opening

• Semiconductor protection and alarm devices

• (n-1) or (n-2) semiconductor redundancy

• Supervision and control of current sharing between electrolysis cell lines in parallel

• DC earth fault protection

• Full temperature monitoring and thermal protection

• Cooling circuit monitoring (pressure, flow and conductivity)

• Cooling system redundancy

• Short circuit control of elecrolysis cell for process maintenance purpose

System Accessories

• Polarizers

• High current DC isolators

• High current cells DC switches

• Anodic control and protection devices (ACPD)

• Aluminium high current bars

Applications

• Electro-chemistry plants

• DC arc furnaces

• Metal refining