Description
1. Product Title
GE IS200TPROH1BBB – Turbine Protection Terminal Board
2. Product Overview
The IS200TPROH1BBB is a high-integrity Turbine Protection (TPRO) terminal board developed for the GE Mark VI Control System. Its primary function is to serve as the critical interface for emergency turbine protection functions, including overspeed detection and emergency trip logic. The board handles inputs from speed sensors (magnetic pickups) and manages the interface for the Emergency Stop (E-Stop) pushbuttons and trip solenoid status. By centralizing these safety-critical signals, the IS200TPROH1BBB ensures that the turbine can be brought to a safe state in the event of a mechanical or electrical fault. It solves the most vital industrial challenge in power generation: preventing catastrophic turbine failure through high-speed, hardware-based protection logic.
3. Technical Specifications
- Brand: General Electric (GE)
- Model: IS200TPROH1BBB
- Warranty: One Year
- Condition: 100% New & Original
- Series: Mark VI
- Inputs: 9 Magnetic Pickup (MPU) speed sensor inputs
- Trip Logic: Interface for Emergency Trip (ET) and Mechanical Trip
- Communication: Dual 37-pin D-type connectors for cable redundancy
- Operating Temp: -30°C to +65°C (-22°F to +149°F)
- Mounting: Standard Mark VI cabinet mounting (Sheet metal base)
- Safety Rating: Designed for high-reliability SIL-capable protection loops
4. Key Features & Benefits
- Overspeed Protection Integration: Directly interfaces with multiple MPU sensors to provide redundant speed monitoring, ensuring that a single sensor failure does not compromise turbine safety.
- Hardware-Based Trip Interface: Provides a dedicated physical path for the Emergency Trip Board (ETRP/TREP), allowing for a fail-safe mechanical shutdown independent of the software-based control loops.
- Passive Reliability: As a terminal board, the IS200TPROH1BBB is primarily passive, reducing internal heat and increasing the overall Mean Time Between Failures (MTBF) for the safety system.
- Redundant Signal Routing: Equipped with dual connectors to allow for redundant signal paths to the I/O processors, preventing a single cable fault from disabling protection.
5. Application Scenarios
- Steam Turbine Safety: Deployed in utility-scale steam turbines to monitor shaft speed and provide the physical interface for the main trip solenoid valves.
- Gas Turbine Emergency Systems: Used in GE Frame 6, 7, and 9 gas turbines as the primary termination point for the overspeed protection and emergency stop circuits.
- Combined Cycle Power Plants: Integrated into the overall plant protection logic to ensure coordinated shutdowns between the turbine and the Heat Recovery Steam Generator (HRSG) in the event of a trip.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the IS200TPROH1BBB ?
- A: It is a terminal board that provides the physical interface for turbine protection signals, specifically speed sensors and emergency trip circuits.
- Q: Can the IS200TPROH1BBB be used in a TMR system?
- A: Yes, it is typically used in conjunction with the VTRP (Turbine Protection) I/O processor in TMR (Triple Modular Redundant) configurations to provide 2-out-of-3 voting logic for trips.
