DECS-250N, Digital Excitation Control System with Negative Forcing

The DECS-250N is a complete digital excitation control system. Total control in a compact package means precise voltage, var and power factor regulation, negative field-forcing capabilities, and exceptional system response, plus generator and motor protection. An optional Power System Stabilizer helps users meet stringent grid code compliance requirements. The DECS-250N offers extreme flexibility in a cost-effective, easy-to-use package.


  • Reduce 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 logic without the need for expensive physical hardware.
  • A powerful 20 amp rectifier bridge provides high positive and negative field forcing for exceptional system response. The negative field-forcing capabilities make it well suited to be paired with the optional Power System Stabilizer.
  • The DECS-250N's rms sensing and rugged power stage create an easy, worry-free solution for applications containing high waveform distortion caused by nonlinear loading.
  • The 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.
  • The DECS-250N 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-250N and helps to eliminate potential setup errors.
  • Contains extensive communication options to allow for easy integration into a wide variety of control systems.

Technical Resources