IS230TRPAH2A - TURBINE SPECIFIC PRIMARY TRIP MODULE

SPECIFICATIONS:

Part Number: IS230TRPAH2A
Manufacturer: General Electric
Series: Mark VIe
Function: Turbine Primary Trip Terminal Board
Number of Inputs: 3 x 4 Voltage
Number of Outputs: 2 trip
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)
Manual: GEH-6721D

FUNCTIONAL DESCRIPTION:

IS230TRPAH2A is a Turbine Primary Trip Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The Turbine Primary Trip Terminal Board serves as a central hub for the connection and management of various trip signals that are crucial for the safe operation of the turbine. It ensures that the turbine can be quickly and safely shut down (tripped) in the event of abnormal conditions or failures. The turbine primary trip terminal board, TRPAH2A, works with the PTUR turbine I/O packs or with the TTUR terminal board as part of the Mark VIe system. The inputs and outputs are as follows:

• 12 passive pulse rate devices (four per R/S/T section) sensing a toothed wheel to measure the turbine speed. Or, six active pulse rate inputs (two per TMR section)
• 2 24 V dc (H1) or 125 V dc (H2) TMR voted output contacts to the main breaker coil for the trip coil.
• 4 24-125 V dc voltage detection circuits for monitoring trip string.

INSTALLATION:

The I/O terminal blocks TB1 and TB2 handle various connections in the system. TB1 is designated for TTL pulse rate pick-ups, voltage detection, E-STOP, and the breaker relay, while TB2 is used for passive pulse rate pick-ups. Each terminal block is secured with two screws and features 24 terminals that can accommodate wires up to #12 AWG. To the left of each terminal block, there is a shield termination strip connected to the chassis ground. The TRPA must be configured for the desired speed input connections according to the following table. Jumpers JP1 and JP2 are used to fan the R section pulse rate pickups to the S and T PTURs.

OPERATION:

With a TTUR Terminal Board: When the TRPA is connected to a TTUR terminal board that holds three PTUR I/O packs, three cables with DC-37 pin connectors are used to link the boards. In this setup, the TRPA provides two contact-voted trip relay outputs, an ESTOP function, and four voltage sensors. The TTUR terminal board provides its standard features as described in its documentation. In this configuration, the TRPA speed inputs are inactive and should not be connected.

Standalone with PTUR I/O Packs: Alternatively, the TRPA can be used with three PTUR I/O packs mounted directly on the TRPA itself. In this configuration, the speed inputs on the TRPA become active and provide direct paths into the PTUR, allowing the TRPA to function as a single terminal board primary trip solution.

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FREQUENTLY ASKED QUESTIONS:

What is the TRPA board used for?

The TRPA board is used in turbine control systems to manage trip relay outputs, emergency stop (ESTOP) functions, and voltage sensing. It can be configured in different ways to suit specific applications.

What are the specifications of the terminal blocks TB1 and TB2?

Each terminal block has 24 terminals and can accept wires up to #12 AWG. They are secured with two screws. A shield termination strip, connected to the chassis ground, is located to the left of each terminal block.

How are the jumpers JP1 and JP2 used?

Jumpers JP1 and JP2 are used to fan the R section pulse rate pickups to the S and T PTURs.