This product bulletin provides an overview of the features, benefits, specifications, and configuration options of the DECS-250 Digital Excitation Control System.
Application and advantages of retrofitting an excitation system to replace the analog front end controls with a state-of-the-art digital controller, firing circuits, power supplies, field ground detector, and other components, while maintaining the original excitation power bridge and Power Potential Transformer.
This DNV Type Approval Certificate documents that the DECS-250 and DECS-250N Digital Excitation Control Systems have been approved for installation on DNV-classed marine and offshore vessels, demonstrating compliance with applicable classification, environmental, vibration, and electromagnetic compatibility requirements.
This ABS Product Design Assessment (PDA) Certificate confirms that the DECS-150, DECS-250, and DECS-250N excitation control systems have been evaluated for compliance with applicable ABS marine classification requirements and are approved for marine and offshore generator excitation control applications on ABS-classed vessels, subject to ABS certification and installation requirements.
This application note describes a prepackaged dual SGC-250 Synchronous Generator Controller solution that reduces engineering and installation time while providing redundant generator control capability. It highlights how the system improves reliability, simplifies integration, and supports utility and industrial power generation applications.
This application note explains the operating principles and application of the ES-47 Phase Sequence Relay for detecting correct phase rotation in three-phase power systems. It describes relay connections, phase sequence identification, and installation considerations for A-B-C and A-C-B system configurations.
This application note explains how the ES-32 Reverse Power Relay improves protection performance by measuring true real power rather than apparent power. It highlights applications for generator protection, loss-of-prime-mover detection, and reverse power monitoring in utility and industrial power systems.
This application note explains how the ES-25 Sync-Check Relay provides enhanced synchronizing supervision by evaluating both voltage magnitude and phase angle differences between a generator and the power system. It highlights methods that improve synchronization accuracy, simplify operation, and help prevent improper breaker closure.
