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The GE DS200TCEAG2B is an Emergency Overspeed Card for the Mark V Speedtronic turbine control system. It is a safety-critical component specifically designed to monitor turbine speed and initiate a protective trip (shutdown) if the speed exceeds a predefined, safe limit. The G2B in the part number indicates a specific hardware revision.
Technical Breakdown 🧠
This card is a core part of the Mark V’s overspeed protection system, designed for maximum reliability and fault tolerance.
- Safety-Critical Monitoring: The primary purpose of the DS200TCEAG2B is to prevent a catastrophic turbine failure due to overspeed. It receives signals from dedicated speed sensors, typically magnetic pickups mounted to the turbine shaft. These signals are conditioned and continuously monitored by the board’s internal circuitry. The board also processes signals related to flame detection, which is another critical trip condition in gas turbines.
- Triple Redundancy (TMR): The Mark V system is known for its Triple Modular Redundant (TMR) architecture. The overspeed system is a prime example of this, with three identical TCEA cards (one for each of the R, S, and T processors) and three independent speed sensors. All three cards monitor their respective sensors in parallel. If a majority of the cards (e.g., two out of three) detect an overspeed condition, they will initiate an immediate, hardwired turbine trip. This redundancy ensures that the system can withstand a single point of failure without compromising safety.
- Hardware-Based Trip: The emergency overspeed trip is a hardwired, high-speed function. The trip signal from the TCEA board is sent directly to the trip solenoids and relays. This ensures that the shutdown is initiated with minimal delay, regardless of the state of the main control software. The board features an Intel 80196 microprocessor and multiple PROM modules that store its firmware and operating instructions.
- Hardware Revision (G2B): The
G2Bdesignation signifies a specific hardware version of the board. This revision may include minor component updates or design improvements for enhanced reliability or manufacturability compared to its predecessor, theG1B. Functionally, it is an upgrade or direct replacement for the earlier version.
Applications 🏭
The DS200TCEAG2B is a fundamental component in the emergency trip systems of Mark V turbine control panels for:
- Gas Turbines
- Steam Turbines
- Hydro Turbines
It serves as the last line of defense against overspeed conditions, providing a critical layer of safety for both equipment and personnel.
The GE DS200TCEAG2B is an Emergency Overspeed Card for the Mark V Speedtronic turbine control system. It is a safety-critical component specifically designed to monitor turbine speed and initiate a protective trip (shutdown) if the speed exceeds a predefined, safe limit. The G2B in the part number indicates a specific hardware revision.
Technical Breakdown 🧠
This card is a core part of the Mark V’s overspeed protection system, designed for maximum reliability and fault tolerance.
- Safety-Critical Monitoring: The primary purpose of the DS200TCEAG2B is to prevent a catastrophic turbine failure due to overspeed. It receives signals from dedicated speed sensors, typically magnetic pickups mounted to the turbine shaft. These signals are conditioned and continuously monitored by the board’s internal circuitry. The board also processes signals related to flame detection, which is another critical trip condition in gas turbines.
- Triple Redundancy (TMR): The Mark V system is known for its Triple Modular Redundant (TMR) architecture. The overspeed system is a prime example of this, with three identical TCEA cards (one for each of the R, S, and T processors) and three independent speed sensors. All three cards monitor their respective sensors in parallel. If a majority of the cards (e.g., two out of three) detect an overspeed condition, they will initiate an immediate, hardwired turbine trip. This redundancy ensures that the system can withstand a single point of failure without compromising safety.
- Hardware-Based Trip: The emergency overspeed trip is a hardwired, high-speed function. The trip signal from the TCEA board is sent directly to the trip solenoids and relays. This ensures that the shutdown is initiated with minimal delay, regardless of the state of the main control software. The board features an Intel 80196 microprocessor and multiple PROM modules that store its firmware and operating instructions.
- Hardware Revision (G2B): The
G2Bdesignation signifies a specific hardware version of the board. This revision may include minor component updates or design improvements for enhanced reliability or manufacturability compared to its predecessor, theG1B. Functionally, it is an upgrade or direct replacement for the earlier version.
Applications 🏭
The DS200TCEAG2B is a fundamental component in the emergency trip systems of Mark V turbine control panels for:
- Gas Turbines
- Steam Turbines
- Hydro Turbines
It serves as the last line of defense against overspeed conditions, providing a critical layer of safety for both equipment and personnel.
