IS230TREAH1A - Aeroderivative Turbine Emergency Trip Terminal Board

SPECIFICATIONS:

Part Number: IS230TREAH1A
Manufacturer: General Electric
Series: Mark VIe
Function: Turbine Emergency Trip terminal board
Number of Inputs: 3
Number of Outputs: 2
Temperature: -30 to 65°C
MPU pulse rate range: 2 Hz to 20 kHz
MPU pulse rate accuracy: 0.05%
Number of outputs: 2 trip contacts
MPU input circuit sensitivity: 27 mV pk
Availability: In Stock
Size: 33.0 cm x 17.8 cm
Technology: Surface mount
Country of Manufacture: United States (USA)

FUNCTIONAL DESCRIPTION:

IS230TREAH1A is an Aeroderivative Turbine Emergency Trip Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The Aeroderivative Turbine Emergency Trip (TREA) terminal board works with PPRO and YPRO turbine I/O packs as part of the Mark VIe or Mark VIeS system respectively.

The inputs and outputs are as follows:

• Customer input terminals provided through two 24-point pluggable barrier terminal blocks (H1A or S1A, H2A or S1A) or 48 pluggable Euro-style box terminals (H3A or S3A, H4A or S4A).
• Nine passive pulse rate devices (three per X/Y/Z section) sense a toothed wheel to measure the turbine speed.
  Jumper blocks that enable fanning of one set of three-speed inputs to all three PPRO or YPRO I/O packs.
• Two 24 V dc (H1A / S1A, H3A / S3A) or 125 V dc (H2A / S2A, H4A / S4A) TMR voted output contacts to trip the system.
• Four 24-125 V dc voltage detection circuits for monitoring trip string.
• Daughterboard connectors for optional feature expansion. For TMR systems, signals fan out to the JX1, JY1, and JZ1 DC-62 PPRO or YPRO connectors.

INSTALLATION:

• For H1 / S1 and H2 / S2 board variants, voltage detection, and the breaker relay are wired to the I/O terminal blocks TB1. Passive pulse rate pick-ups are wired to TB2. Each block is held down with two screws and has 24 terminals accepting up to #12 AWG wires. A shield termination strip attached to the chassis ground is located immediately to the left of each terminal block.

• For H3 / S3 and H4 / S4 board variants, voltage detection and the breaker relay are wired to the I/O box terminals at the top of the board. Passive pulse rate pick-ups are wired to the lower terminals. All terminals plug into a header on the TREA board and accept up to a single #12 AWG wire.

CONFIGURATION:

Jumpers JP1 and JP2 select the fanning of the 3 X section passive speed pickups to the S and T section PPROs or YPROs. Place the jumper over the pin pairs if you want to fan the 3 R speed input to the other two TMR sections.

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FREQUENTLY ASKED QUESTIONS:

What is an aero-derivative turbine emergency trip terminal board?

An aero-derivative turbine emergency trip terminal board is a critical component of a gas turbine system designed to ensure safety and reliability during emergencies. It consists of a series of terminals and circuits that facilitate emergency shutdown procedures in the event of abnormal operating conditions or imminent hazards.

How does the emergency trip terminal board function?

The emergency trip terminal board is connected to various sensors and instruments throughout the gas turbine system. When these sensors detect abnormal conditions such as high temperatures, excessive vibration, or loss of lubrication, they send signals to the terminal board. The board then initiates the emergency trip sequence, shutting down the turbine to prevent damage or hazards.

What are the typical components found on an aero-derivative turbine emergency trip terminal board?

Components commonly found on such a terminal board include relay modules, circuit breakers, fuses, interface connectors, and status indicators. These components work together to monitor system parameters and execute the emergency shutdown process when necessary.