DECS-250, Digital Excitation Control System

The DECS-250 is a complete digital excitation control system. Total control in a compact package provides precise voltage, var and power factor regulation, and exceptional system response, plus generator and motor protection. An optional power system stabilizer helps you meet stringent grid code compliance requirements. The DECS-250 offers extreme flexibility and total functionality in a cost effective, easy-to-use package.


  • Reduce your setup time with Basler's intuitive BESTCOMSPlus® software that simplifies complex setup with simple drag-and-drop programmable logic, visual real-time strip chart capabilities, and cutting edge auto PID selection capabilities.
  • The revolutionary auto-tuning function automatically establishes optimum PID and gain settings, taking the guesswork out of system setup, reducing commissioning time and cost while maximizing overall system performance.
  • Network Load Sharing provides easy implementation in complex paralleled systems.
  • The Offline Simulator in BESTlogic™Plus helps identify and troubleshoot the logic without the expensive need for physical hardware.
  • Powerful 15 amp pulse-width-modulated (PWM) power stage provides a high initial response for exceptional system response to load transients. Flexible PWM power stage makes it easily adaptable to any system - shunt, auxiliary winding, permanent magnet, or dc fed.
  • The DECS-250's rms sensing and rugged power stage creates an easy, worry-free solution for applications containing high waveform distortion caused by non-linear loading.
  • The DECS-250's advanced microprocessor-based design provides visionary expandability, flexibility, and reliable operation for any system.
  • The optional integrated power system stabilizer eases concerns about grid code compliance issues with its advanced power system performance and reliability, eliminating the need of external devices and wiring.
  • Contains a full suite of generator and motor protection for accurate fault detection and clearing, eliminating dangerous and damaging conditions to the generator or motor.
  • Multilingual user interface simplifies setting the DECS-250 and helps to eliminate potential errors in setup.
  • Contains an extensive array of communication options which allows for easy integration into a wide variety of control systems.
  • Grid Code: Component certified per standard VDE-AR-N 4110.

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