Products Description
GE IS200TREGH1BEC Mark VI Emergency Trip Termination Board in stock
GE IS200TREGH1BEC is an emergency trip termination relay board for GE Mark VI / Mark VIe Speedtronic turbine control system. It works with VPRO and TRPG boards to implement independent turbine overspeed emergency protection, separate from the main turbine control logic.

This board is equipped with 12 onboard relays, adopting 2-out-of-3 voting logic for trip solenoid control. It supplies the positive side of 125VDC trip circuit and accepts 28VDC power from VPRO board. It is discontinued legacy spare widely used for gas and steam turbine protection system maintenance in power plants.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | GE |
| 2 | Model | IS200TREGH1BEC |
| 3 | Module Type | Emergency Trip Termination Relay Board |
| 4 | Applicable System | GE Mark VI / Mark VIe Speedtronic Turbine Control |
| 5 | Onboard Relays | 12 relays, 9 relays for 2oo3 voting trip logic |
| 6 | Trip Circuit | Provide positive side of 125VDC trip function |
| 7 | Power Input | 28VDC supplied by VPRO protection board |
| 8 | Connectors | 3 × D-Sub female connectors + terminal strips |
| 9 | Operation Temperature | -40℃ ~ +85℃ |
| 10 | Status | Discontinued legacy turbine protection spare part |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Provide independent emergency overspeed protection, separated from main turbine control system. |
| 2 | Adopt 2-out-of-3 voting relay logic to drive turbine trip solenoid for safety trip action. |
| 3 | Supply positive 125VDC power for turbine trip circuit, matched with negative trip board. |
| 4 | Work cooperatively with VPRO and TRPG boards to build complete turbine emergency trip protection loop. |
| 5 | Metal oxide varistors on board for surge suppression and circuit overvoltage protection. |
Application Scenarios
| No. | Application |
|---|---|
| 1 | GE Mark VI / Mark VIe gas turbine & steam turbine emergency trip protection system in power plants |
| 2 | Oil & gas compressor turbine unit overspeed safety interlock protection system |
| 3 | Power generation plant turbine safety shutdown and emergency trip control loop |
| 4 | Legacy Speedtronic turbine protection system spare replacement and field maintenance |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q: What is GE IS200TREGH1BEC? A: It is emergency trip termination relay board for Mark VI/VIe Speedtronic, used for turbine overspeed emergency protection. |
| 2 | Q: What is 2oo3 voting logic? A: 2-out-of-3 relay voting, trip action triggers when at least 2 relays activate, improving protection reliability. |
| 3 | Q: Which boards does it work with? A: It cooperates with VPRO turbine protection board and TRPG board to complete the whole emergency trip circuit. |