GE IS200TREGH1BEC Turbine Emergency Trip Terminal Board

Technical Specifications

Model: IS200TREGH1BEC

Brand: GE（GE Vernova）

Product Type: TREG turbine emergency trip terminal board

Matching System: GE Speedtronic Mark VI turbine control system

Trip Power: 125VDC positive power supply for trip solenoids, matched with TRPG board for negative loop

Relay Quantity: 12 on‑board industrial relays, 3‑out‑of‑2 voting trip logic group

Channel Architecture: Dual independent A/B redundant safety channels

Connector: Multi‑way ribbon cable connector for VME rack signal interconnection, field terminal block for solenoid wiring

Indicator: On‑board LED for relay action and trip channel status

Mounting: Cabinet flat‑panel installation for Mark VI control rack

Operating Temperature:‑40℃ ~ +70℃, non‑condensing

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.90kg

Dimension:330mm ×178mm ×30mm

Compatible System: Gas turbine, steam turbine combined‑cycle unit emergency trip cabinet

Core Function

TREG emergency trip terminal board for Mark VI turbine protection system. It supplies positive 125VDC driving power for turbine emergency trip solenoids, works together with TRPG negative power board to constitute complete hardware trip loop. Adopts 2‑out‑of‑3 relay voting logic to realize reliable hardware emergency trip action when overspeed, over‑temperature and other serious faults occur. Dual‑channel redundant design improves safety of protection circuit. It does not depend on main controller software, implements hard‑wired turbine shutdown function, which is the core safety hardware of turbine unit.

Product Details

IS200TREGH1BEC belongs to TREG series emergency trip terminal board of GE Speedtronic Mark VI turbine control system.

This safety‑critical terminal board is responsible for power distribution and signal interface of emergency trip solenoids. Twelve built‑in high‑reliability relays form multiple voting groups to avoid single‑point failure. It provides positive side of 125VDC for trip solenoid coils, while TRPG board provides negative return path to complete solenoid driving circuit. When turbine protection condition is triggered, relay contacts act rapidly to cut off solenoid power and trigger emergency turbine trip. On‑board LED indicators directly show relay working state, convenient for field inspection and fault troubleshooting. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to harsh working environment of power‑plant turbine cabinet. Widely deployed in gas‑steam turbine combined‑cycle unit safety protection cabinets.

It belongs to critical hardware trip spare‑part for Mark VI turbine protection system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for emergency trip loop debugging and defective IS200TREGH1BEC board replacement.