DS200PTBAG1ABA - Protection Termination Module

SPECIFICATIONS

Part No.: DS200PTBAG1ABA
Manufacturer: General Electric
Product Type: Protection Termination Module
Product Description: Protection Termination Module
Country of Manufacture: United States (USA)
Series: Mark V

Functional Description

DS200PTBAG1ABA is a Protection Termination Module developed by GE. It is a part of Mark V Series. Located in the P1 core, it handles input signals for high and low-pressure shaft speeds, flame detection, generator and bus voltages, and generator currents. The PTBA also manages external trip inputs and generator breaker close signals, routing them to the TCTG board in the P1 core for turbine trip control.

Features

The Protection Termination Module (PTBA) is installed in the P1 core of the Mark V Control System and serves as a termination point for key input and output signals. These signals include:

• Shaft Speed Monitoring: Input signals for high and low-pressure shaft speeds are connected to the PTBA and transmitted to relevant boards for processing.
• Flame Detection: The module terminates and transmits flame detection signals for combustion monitoring.
• Voltage and Current Signals: Generator and bus voltage signals, as well as generator current readings, are processed through the PTBA board.
• Turbine Protection & Trips: The module handles external trip signals and generator breaker close signals, ensuring safe turbine shutdown during fault conditions.

Signal Flow and Connections

The PTBA board is responsible for routing essential control and protection signals to various boards within the Mark V system. These connections are as follows:

• JJR: Transmits speed signals for high and low-pressure shafts to the TCQE board in the R1 core.
• JM: Reads and writes generator breaker signals (52GL) and emergency trip outputs to/from the TCTG board in the P1 core.
• JN: Handles generator breaker signals (G125P), external trip signals, and horn enable signals, transmitting them to/from the TCTG board in the P1 core.
• JU: Sends emergency overspeed signals, flame detection signals, and horn enable signals to the TCEB board in the P1 core.
• JV: Writes generator and bus voltage signals, as well as current signals (PT and CT), to the TCEB board in the P1 core.
• JVA: Supplies 335V DC power from the TCEB board in the P1 core to flame detection devices.
• JJS/T: Typically not used.

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Frequently Asked Questions

What is DS200PTBAG1ABA?
It is a Protection Termination Module developed by GE.

Where is the Module installed?
It is installed in the P1 core of the Mark V Control System and works alongside other boards, such as the TCEB and TCTG boards, to ensure proper signal processing.

What is the function of the JJR connector?
The JJR connector transmits speed signals for high and low-pressure shafts to the TCQE board in the R1 core for processing and monitoring.

What does the JVA connector do?
The JVA connector provides 335V DC power from the TCEB board in the P1 core to the flame detection devices for proper operation.