الوصف
The GE DS200TCEBG1 Protective Termination Expander Board (TCEB) is a critical interface component in the General Electric Mark V Speedtronic Turbine Control System.
🛡️ Function and Role
The primary function of the DS200TCEBG1 is to act as a signal intermediary and conditioner within the turbine’s control and protective core. It is not a processor itself, but an I/O board that routes, scales, and protects signals before they reach the main processing boards.
- Signal Routing and Conditioning: It receives and manages several critical signals from the terminal boards (like the PTBA board) and passes them on to the protective processing boards (like the TCEA and TCCB boards).
- PT and CT Scaling: A major function is scaling the signals from the Potential Transformers (PT) and Current Transformers (CT). These scaled signals are used for monitoring the generator and bus voltages as well as the line current.
- Emergency Signal Handling: It is the pathway for crucial emergency overspeed and flame detection signals, which pass through the TCEB to the redundant TCEA (Emergency Overspeed) boards for protective processing.
- Voltage Supply: It helps condition and route the 335 V DC power needed for the Ultra Violet (UV) flame detector devices.
- Alarm Horn: The board is also known to hold the alarm horn for the Mark V LM system.
- Protection: The “Protective Termination” in its name signifies that the board is equipped with features like overvoltage, overcurrent, and short circuit protection to safeguard connected devices and ensure signal integrity.
📍 Location and Series
- Series: It belongs to the DS200 Series of circuit boards used in the Mark V Speedtronic Control System, which is applied in the control and management of gas, steam, and wind turbines.
- Location: The board is typically located in the core (often the P1 core slot) of the Mark V control panel.
🔗 Key Connections
The board has several connectors for interfacing, including:
- JKX/Y/Z: Carries emergency overspeed magnetic pickup signals and flame detection signals to the TCEA boards.
- JV: Carries the PT and CT signals from the terminal board (PTBA).
- JMP: Carries the scaled PT and CT signals to the TCCB board.
- JVA/JWX/Y/Z: Handles the 335 V DC power for the flame detectors.




+86 15340683922
+86 15340683922