Description
1. Product Title
GE IS200TREGH1BEC – Turbine Emergency Trip Terminal Board
2. Product Overview
The IS200TREGH1BEC is a safety-critical terminal board within the GE Mark VI Control System, specifically designed for the Turbine Emergency Trip (TREG) functional group. Its primary role is to provide the physical and logical interface for the emergency trip solenoids. The board receives trip signals from the Turbine Protection (TPRO) board and the I/O processors to de-energize the trip solenoids, effectively shutting down the turbine in the event of an emergency. By utilizing the IS200TREGH1BEC , industrial operators ensure a fail-safe mechanism that operates independently of the primary control software, solving the fundamental safety requirement of protecting high-speed rotating machinery from overspeed, loss of oil pressure, or manual emergency stops.
3. Technical Specifications
- Brand: General Electric (GE)
- Model: IS200TREGH1BEC
- Warranty: One Year
- Condition: 100% New & Original
- Series: Mark VI
- Input Channels: 12 to 24V DC logic inputs (from TPRO/VTRP)
- Output Type: Relay-driven trip solenoid power circuits
- Connectors: 37-pin J-connectors for interface with I/O racks
- Terminal Type: Barrier-type screw terminal blocks
- Operating Temp: -30°C to +65°C (-22°F to +149°F)
- Configuration: H1B (Standard Revision) with “EC” functional variant
4. Key Features & Benefits
- Hardware Voting Logic: Implements 2-out-of-3 (TMR) voting logic for the trip solenoids, ensuring that no single component failure can cause a nuisance trip or, more importantly, fail to trip when required.
- Positive Isolation: Provides physical disconnection of power to the trip solenoids, ensuring a reliable “de-energize to trip” safety architecture.
- Integrated E-Stop Support: Features dedicated terminals for the local and remote Emergency Stop pushbuttons, allowing for an immediate hardware-level override of all control functions.
- Interlocking Compatibility: Works in tandem with the TSVO (Servo Terminal Board) and TPRO to provide a comprehensive protection envelope across both electronic and hydraulic systems.
5. Application Scenarios
- Large-Scale Steam Turbines: Acts as the final control element in the safety chain, managing the interface between the Mark VI logic and the physical hydraulic trip block.
- Gas Turbine Protection: Deployed in GE heavy-duty gas turbines (Frame 7/9) to manage fuel shut-off valves and bleed heat valves during an emergency shutdown sequence.
- Critical Pump Drives: Utilized in high-pressure water or oil pumping stations where an uncontrolled motor overspeed could result in catastrophic pipe failure.
6. Frequently Asked Questions (FAQ)
- Q: What is the difference between the TPRO and the IS200TREGH1BEC ?
- A: While the TPRO board handles speed sensing and protection inputs, the IS200TREGH1BEC handles the output side—specifically the power and relay logic to the trip solenoids.
- Q: Does this board support Triple Modular Redundancy (TMR)?
- A: Yes, the IS200TREGH1BEC is specifically designed to facilitate TMR voting for the emergency trip system in Mark VI architectures.
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