GE IS200TREGH1BEC Emergency Trip Terminal Board for Mark VIe Turbine

The GE IS200TREGH1BEC is an Emergency Trip Terminal Board, a critical safety component in GE’s Mark VIe gas turbine control system, responsible for managing emergency trip solenoids to ensure rapid safety responses. It delivers power to three trip solenoids, working in tandem with the TRPG terminal board to control solenoid activation, a key mechanism for shutting down turbines during critical scenarios like overspeed or emergencies.

Equipped with 12 relays, it enables the I/O controller to govern solenoid operation through coordinated relay logic. The board supports 125V DC solenoid power with protective components like MOVs and a 10Ω/70W resistor, while 28V DC from the controller powers its relay coils. Diagnostic monitoring checks feeder integrity, fuses, and connections, enhancing system reliability.

Features:
Emergency Trip Control: Manages three trip solenoids, enabling rapid shutdown of fuel/steam valves via coordinated power distribution with the TRPG board.

Redundant Relay Logic: Nine relays in three voting groups ensure reliable solenoid control, with the I/O controller dictating overspeed protection and emergency stops.

Power Management: Supplies 125V DC to solenoids with current suppression via MOV and uses 28V DC from the controller for relay coils, ensuring safe power delivery.

Diagnostic Monitoring: Tracks 125V DC feeder integrity, fuse conditions, and connections to proactively identify issues.

Economizing Relays: KE1-3 relays reduce post-energization current load, optimizing efficiency while maintaining solenoid readiness.

Mark VIe Integration: Seamlessly integrates into the series’ safety architecture, enhancing turbine safety through redundant, controlled emergency responses.

Safety Focus: Critical for hazard mitigation, with series contacts from emergency/primary relays ensuring failsafe solenoid deactivation during trips.