GE IS200TREGH1B Turbine Emergency Terminal Board

GE IS200TREGH1B is a critical emergency trip terminal board designed for GE Mark VI Speedtronic turbine control systems. 

It controls three emergency trip solenoids with 12 onboard relays, executing 2-out-of-3 voting logic for overspeed 

protection and emergency shutdown. It ensures fast, reliable safety tripping for gas/steam turbines in power generation and heavy industry.

3. Technical Specifications

Part Number: IS200TREGH1B

Manufacturer: General Electric (GE)

Series: Mark VI Speedtronic

Type: Turbine Emergency Trip Terminal Board

Relays: 12 relays (3 groups of 3 for voting)

Trip Solenoids: 3 (positive side control)

Logic: 2-out-of-3 voting for trip signals

Input Power: 200–250 VAC

Bus Voltage: 70–145 VDC

Operating Temperature: 0°C to +70°C

Dimensions: 17.8 cm × 33.02 cm

Weight: Approx. 0.91 kg (2.0 lbs)

Certification: CE, UL, Conformal coated