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Thyristor-Rectifiers particulary suitable for EX-zone


  • Thyristor-Wassergekuehlt
  • rgb-ex
  • rgb-ex


The rectifier construction of the production series RGB-Thyro-Power in principle is characterized by an electronic Thyristor-control-unit (W3C) and high-current-transformer with secondary connected silicon diode-stack in M3.2U connection.

All constructions and developments are made by RGB, so that the customer will get the highest possible flexibility and technical know-how. This is realized with our high degree of own manufacturing, including the RGB transformer production.


  • Cooling system RGB Cool Coil Technologie. (water cooling)
  • Air-, Oil- and Water cooling systems
  • Optional with RGB-Bipol-Power (integrated electronic switch of DC output polarity)
  • Optional with RGB-Powerpuls.
  • Single T/R from: UDC = 2 - 1.000V / IDC = 100 - 100.000A
  • Enclosure material (stainless steel up to SS316L, Titanium heat exchanger)
  • Degree of protection up to IP66
  • TÜV certified
  • Integrated intelligent purge pressurization system
  • EExp-System wired and ex proofed according to ATEX95, EN60079-2 and EN60079-14


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  • Mains: 3x400V / 50Hz (worldwide mains-conditions possible)
  • Regulating: current and/or voltage with 1% accuracy (stepless electronic 0...100%)
  • Signals: current, voltage, status, fault (fault signals optional)
  • Control: interface for external control
  • Ripple: <7% at regulated full-DC-output voltage (<5% at full range)
  • Rectifier connection: 6-pulse rectifier-connection
  • Operation mode: 100% duty cycle
  • Temperature: +35°C (higher temperature conditions possible)
  • Water inlet temp.: +18 - 30°C
  • Temperature difference: 10 K
  • Detection: phase position; phase rotation; phase loss; over current relay; mains low voltage; short-circuit detection; temperatures; water flow; water pressure
  • Degree of protection: IP20 - IP66
  • (with additional air- water- heat-exchanger) 


  • Field-bus interface (Profibus; Interbus-S; CAN-Bus; RS-485 etc.)
  • Electronic switch of DC output polarity (reversal operation mode)
  • Process control (PLC-control with Visualization and documentation in Excel)
  • Smoothing devices (L and LC smoothing <1% possible)
  • Ah-counter-integration
  • Closed internal water circuit with w/w heat-exchanger
  • RGB-Power-Pulse
  • Special taylor made constructions


  • high speed regulation
  • high regulating accuracy
  • short-circuit management
  • no mechanical wear
  • low maintenance and high reliability