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The GE IS210TPGSH2B is a GT (Gas Turbine) Primary Trip Terminal Board Assembly for the Mark VIe series of GE’s Speedtronic Gas Turbine Control Systems. It is a critical component of the turbine’s protection system, providing a physical interface for initiating a primary turbine trip (a rapid, controlled shutdown).
Key Features and Functionality
The IS210TPGSH2B is vital for the safety of the turbine. Its main functions include:
- Primary Trip Interface: The board provides the physical connection points for the signals that initiate a turbine trip. These signals are typically from safety-critical devices like overspeed detectors or emergency stop buttons. The board’s design is fail-safe, meaning that a loss of power to the relays on the board will cause the trip circuit to activate.
- Trip Relays: The board contains the relays that directly control the turbine’s trip circuit. When a trip condition is met, the control system de-energizes these relays, which in turn causes the main trip solenoid valve to close, shutting off the fuel supply to the turbine.
- DIN-Rail Mounting: The assembly is designed to be mounted on a standard DIN rail, which is a common and efficient method for organizing and installing control system components in a cabinet. This simplifies wiring and maintenance.
- Safety-Critical Application: The board is used in safety-critical applications where a reliable and fast shutdown is required to protect the turbine from catastrophic damage. This includes overspeed protection, high vibration trips, and emergency shutdown sequences.
- Component of a Redundant System: In a TMR (Triple Modular Redundancy) system, multiple TPGSH2B boards would be used with their respective controllers to provide a redundant and highly reliable trip function, ensuring that a single-point failure does not compromise safety.
