IS200PTBAG1A - Protection Termination Module

SPECIFICATIONS:

Part Number: IS200PTBAG1A
Manufacturer: General Electric
Series: Mark VI
Board Type: Protection Termination Module
Core Location: Primarily located in the P1 Core
Interface Boards: TCEB (Emergency) and TCTG (Turbine Trip)
Input Types: Shaft Speed, Flame Detection, Voltage, Current
Redundancy: Cross-connected speed signals to R1 core
Contact Load Rating: 5A Continuous at 125 VDC
Isolation Voltage: 1500 Vrms Galvanic Isolation
Connectors: High-density Terminal Blocks & 37-pin D-type
Operating Temp: 0 °C to +50 °C
Dimensions: 33.02 cm x 17.78 cm
Origin United States

FUNCTIONAL DESCRIPTION:

IS200PTBAG1A is a Protection Termination Module manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Gas Turbine Control Systems. The Protection Termination Module (PTBA), located in the P1 core, terminates the signals for the P1 core. Input signals for the high and low pressure shaft speeds, flame detection, generator and bus voltages, and generator currents are landed on the PTBA terminal board and connected to the TCEB board in P1. The speed signals are also connected to the R1 core. The external trip input signals, generator and bus signals, and generator breaker close signals are read by the PTBA terminal board and then written directly to the Turbine Trip (TCTG) board in the P1 core. Trip output signals and generator breaker close signals from the TCTG board are written to the unit via the PTBA terminal board. The audible alarm (horn) located on the TCEB board is powered using a hardware jumper on the PTBA board.

• JJR - writes the high and low pressure shaft speed signals to the TCQE board in the R1 core.
• JM - Reads and writes the emergency trip outputs to/from the TCTG board in the P1> core as well as the generator breaker signals (52GL).
  JN - Reads and writes the external trip signals to/from the TCTG board in the P1 core, writes the enable signal to the horn, and reads and writes the generator breaker signals (G125P).
• JU - Writes the audible alarm (horn) enable, flame detect, and emergency overspeed signals to the TCEB board in the P1> core.
• JV - Writes the PT and CT current signals as well as the generator and bus voltage signals to the TCEB board in the "P1" core.
• JVA - Distributes the 335 V dc from the TCEB board in the P1 core to the flame detecting devices.

PTBA TURBINE OVERSPEED CIRCUIT:

The I/O configuration constants determine the emergency overspeed trip level settings, and the hardware jumpers confirm the overspeed settings. The shaft speed magnetic pick-ups land on the PTBA terminal board in the P1 core for the emergency overspeed circuit. The PTBA board parallels the signals to the R1 core for use in the Control Sequence Program for primary overspeed. The TCEA board calculates shaft speed using I/O configuration constants. The TCEA board compares the calculated shaft speeds with the I/O configuration constants trip values to detect an overspeed trip condition.

WHY BUY FROM WOC:

World of Controls specializes in extending the operational lifespan of GE Mark VI systems by providing the Protection Termination Module in both UNUSED and professionally REBUILT conditions, ensuring that critical turbine protection remains uncompromised. Every module undergoes an exhaustive multi-point validation on specialized diagnostic benches to verify relay switching speed, signal isolation for shaft speed monitoring, and hardware jumper continuity for audible alarms. By combining this rigorous technical testing with global express logistics and a comprehensive warranty, WOC delivers a high-reliability solution that eliminates the risks of using untested surplus hardware, providing immediate operational integrity for your most sensitive turbine governing circuits.

FREQUENTLY ASKED QUESTIONS:

What is the GE IS200PTBAG1A?

The IS200PTBAG1A is a Protection Termination Module for the GE Mark VI control system that serves as the primary interface for critical protection signals, including turbine shaft speed, flame detection, and trip commands, primarily housed within the P1 core.

Which boards does the PTBA interface with?

The PTBA is designed to work in conjunction with the TCEB (Emergency Termination) board and the TCTG (Turbine Trip) board to coordinate safety monitoring and the execution of emergency trip sequences.

How does the PTBA support system redundancy?

Input speed signals landed on the PTBA are cross-connected to the R1 core, ensuring that even if the primary protection core encounters an issue, the system maintains redundant paths to monitor turbine rotation and prevent overspeed conditions.

What types of signals are landed on the PTBA terminal board?

The board terminates high and low-pressure shaft speed signals, flame detection inputs, generator and bus voltages, generator currents, external trip inputs, and generator breaker close signals.