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The GE DS200TCTSG3ACC Simplex Trip Board is a critical component of the General Electric Speedtronic Mark V Turbine Control System.
Its primary role is to serve as a Simplex Trip Card (TCTS), which is the dedicated hardware module responsible for executing the emergency shutdown (trip) logic to protect the turbine from unsafe operating conditions.
💡 Function and Specifications
The board’s part number contains coded information about its role:
- DS200: Identifies it as part of the GE Mark V (DS200 series) of turbine control circuit boards.
- TCTS: Stands for Turbine Control Trip Simplex. This confirms its function as the safety trip board.
- G3: Indicates the Group 3 hardware configuration or revision series for this board type.
- ACC: These are the revision codes, indicating a specific iteration of the board’s design, circuitry, and/or artwork.
Core Functions
The Simplex Trip Board works within the larger Mark V system to ensure turbine safety by performing the following:
- Vigilant Monitoring: It receives signals from various sensors and processors monitoring critical turbine parameters like speed, vibration, exhaust temperature (for gas turbines), and oil pressure.
- Trip Execution: If any monitored parameter exceeds its safe limit, or if a hardwired Emergency Stop is activated, the board executes the physical trip sequence.
- Fuel/Steam Cutoff: This involves de-energizing the main trip relays (like the Primary Trip Relays – PTRs and Emergency Trip Relays – ETRs), which in turn cut off the fuel or steam supply to the turbine, initiating a controlled shutdown.
- Fail-Safe Design: Like most turbine protection hardware, it is designed to be fail-safe, meaning that in the event of a power loss or internal failure, it defaults to a safe shutdown state.
Design Features (Similar to TCTS Family)
The general design of the TCTS family of boards includes features necessary for its safety-critical role:
- Relays: It is populated with a number of plug-in relays (e.g., 12 or 21, depending on the exact version), which are the output components that physically control the trip solenoids.
- Compatibility: Designed for compatibility with the Mark V’s Simplex software platform.
