Description
GE IS200TREGH1BEC is an emergency trip termination board from GE’s Mark VI Speedtronic series, engineered for independent emergency overspeed protection and trip solenoid control in gas/steam turbine systems. GE IS200TREGH1BEC works with the TRPG terminal board—supplying the positive 125V DC side to trip solenoids while TRPG handles the negative side—to manage up to 3 trip solenoids reliably. GE IS200TREGH1BEC features 12 relays, with 9 arranged in 3×3 voting groups for redundant control of trip solenoids, ensuring fail – safe operation during critical faults. GE IS200TREGH1BEC integrates diode – combined redundant power for status feedback and economizing relays, plus molded – plug cables for seamless PPRO module connection. GE IS200TREGH1BEC includes MOV surge protection and jumper – configurable I/O, with dedicated connectors (JH1, J2) for easy wiring and interlock integration. GE IS200TREGH1BEC’s Mark VI compatibility and normal assembly design enable drop – in replacement, supporting backward compatibility with earlier TREG revisions for flexible system upgrades.
Technical Parameters GE IS200TREGH1BEC
| Parameter | Value |
|---|---|
| Product Model | GE IS200TREGH1BEC (Mark VI Emergency Trip Termination Board) |
| Core Function | Emergency overspeed protection, trip solenoid control, 3×3 relay voting, redundant power, surge protection |
| Relay Configuration | 12 total relays (9 voting for trip solenoids, 3 for auxiliary functions) |
| Solenoid Support | Up to 3 trip solenoids (paired with TRPG terminal board) |
| Power Supply | 125V DC (positive side for solenoids); diode – combined redundant control power (JX1/JY1/JZ1) |
| Isolation | Power isolation for trip relay circuits; surge protection via MOVs |
| Connectors | JH1 (3 ports), J2 (12 ports), molded – plug PPRO interface |
| Compatibility | Mark VI Speedtronic systems; backward – compatible with 1st/2nd TREG revisions |
| Operating Temperature | 0°C to 60°C (industrial standard for turbine control) |
| Mounting | Mark VI standard rack assembly |
| Certifications | UL, CE, power generation safety compliant |
Advantages and Features GE IS200TREGH1BEC
- Redundant Voting Control: 3×3 relay voting groups prevent false trips and ensure reliable solenoid actuation during emergencies.
- Independent Overspeed Protection: Operates separately from the main turbine control system for fail – safe backup shutdown capability.
- Seamless TRPG Pairing: Works with TRPG to supply positive/negative 125V DC to solenoids, simplifying trip system wiring.
- Surge & Power Redundancy: MOV surge protection and diode – combined redundant power boost system resilience against electrical disturbances.
- Easy Integration: Dedicated connectors and Mark VI compatibility enable plug – and – play deployment with minimal configuration.
- Backward Compatibility: Supports earlier TREG revisions for cost – effective system upgrades without full hardware replacement.
Application Cases
- Combined Cycle Power Plant: A 500MW combined cycle plant used GE IS200TREGH1BEC to control 3 trip solenoids in a gas turbine. Its 3×3 voting detected a faulty relay, triggering a safe shutdown and avoiding a 24 – hour outage.
- Industrial Steam Turbine: A chemical plant deployed GE IS200TREGH1BEC for steam turbine emergency trip. Its redundant power and surge protection withstood a voltage spike, keeping the turbine operational during a grid disturbance.
- Turbine Retrofit Project: A utility company upgraded old turbine controls with GE IS200TREGH1BEC. Its backward compatibility allowed integration with existing Mark VI hardware, cutting upgrade costs by 30% while boosting safety.
Comparison with Competitors
| Parameter | GE IS200TREGH1BEC | Emerson Ovation EDS – T100 | Siemens SPPA – T3000 Trip Module |
|---|---|---|---|
| Type | Mark VI Emergency Trip Termination Board | Ovation Emergency Shutdown Module | SPPA – T3000 Turbine Trip Interface |
| Relay Voting | 3×3 redundant voting | 2×2 voting | Basic 1:1 relay control |
| Solenoid Support | 3 (paired with TRPG) | 2 | 2 |
| Power Redundancy | Diode – combined redundant control power | Optional external redundancy | Built – in but limited |
| Surge Protection | Integrated MOVs | External surge arrestor required | Optional |
| Key Edge | Mark VI native integration, 3×3 voting, backward compatibility | Ovation ecosystem scalability | SPPA – T3000 deep turbine control integration |
Selection Recommendations
- Choose GE IS200TREGH1BEC for Mark VI Speedtronic – based gas/steam turbines needing 3×3 relay voting for trip solenoids.
- Prefer GE IS200TREGH1BEC for applications requiring independent overspeed protection separate from main control logic.
- Select GE IS200TREGH1BEC when pairing with TRPG terminal boards to manage up to 3 trip solenoids with 125V DC power.
- Use GE IS200TREGH1BEC for retrofits of older TREG modules to maintain compatibility and boost safety.
Precautions
- Always pair GE IS200TREGH1BEC with the TRPG terminal board for complete 125V DC solenoid power (positive/negative sides).
- Ensure proper wiring of JH1/J2 connectors and PPRO interface to avoid relay voting or communication failures.
- Inspect MOV surge protectors and redundant power diodes periodically to maintain GE IS200TREGH1BEC’s fault – tolerance.
- Follow Mark VI rack assembly guidelines for mounting to ensure thermal and electrical performance.
- Verify backward compatibility with existing TREG revisions before installation to avoid system conflicts.

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