IS200TRPAH2AFD - Aeroderivative Turbine Primary Trip Terminal Board

SPECIFICATIONS:

Part Number: IS200TRPAH2AFD
Manufacturer: General Electric
Series: Mark VIe
Board Type: Aeroderivative Turbine Primary Trip Terminal Board
Number of Inputs: 4
Number of Outputs: 2
Input span, transmitters: 1-5 V dc
Maximum lead Resistance: 15 maximum
MPU Pulse Rate Range: 2 Hz
Dimensions: 33.0 cm wide x 17.08 cm high
Mounting Type: Surface-mount
Operating Temperature Range: 30°C to +65°C
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH6721D

FUNCTIONAL DESCRIPTION:

IS200TRPAH2AFD is an Aeroderivative Turbine Primary Trip Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distribution Turbine Control Systems. It works with PTUR / YTUR I/O packs and TTUR terminal boards as part of the Mark VIe / VIeS control system. The inputs and outputs are as follows:

• Twelve passive pulse rate devices (four per R/S/T section) sense a toothed wheel to measure the turbine speed. Or, six active pulse rate inputs (two per TMR section)
• Two 24 V dc (H1A) or 125 V dc (H2A) TMR-voted output contacts to the main breaker coil for the trip coil.
• Four 24-125 V dc voltage detection circuits for monitoring trip string.
• One 24-125 V dc ‘Fail-safe’ ESTOP input for removing power from trip relays. For TMR systems, signals fan out to the PR3, PS3, PT3, JR4, JS4, and JT4 connectors.

INSTALLATION:

TTL pulse rate pick-ups, voltage detection, E-Stop, 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. The TRPA must be configured for the desired speed input connections using the following table. Jumpers JP1 and JP2 select fanning of the R section pulse rate pickups to the S and T PTURs or YTURs

DIAGNOSTICS:

• Feedback from the shorted contact detector should be checked; if there is a problem with the control signal, an alarm should be created.
• Feedback from the ESTOP/TRP input is checked; if there is a problem with the signal a fault should be created.
• Feedback from speed pickup fanning jumpers is checked; if there is a mismatch between intention and actual position, an alarm should be created.
• If any one of the above signals goes unhealthy, a composite diagnostic alarm DIAG_PTUR or DIAG_YTUR occurs. The diagnostic signals can be individually latched and then reset with the RESET_DIA signal if they go healthy.
• Terminal board connectors have their own ID device that is interrogated by the I/O pack. The ID device is a read-only chip coded with the terminal board serial number, board type, revision number, and plug location. When PTUR reads the chip and a mismatch is encountered, a hardware incompatibility fault is created.

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FREQUENTLY ASKED QUESTIONS:

How does the Aeroderivative Turbine Primary Trip Terminal Board detect turbine speed?

The terminal board uses pulse rate devices (both active and passive) to measure the turbine's rotational speed by sensing the movement of a toothed wheel. This data is used to detect overspeed conditions and to manage turbine trips when necessary.

What are the mounting and wiring requirements for this terminal board?

The board is typically surface-mounted and includes terminal blocks for wiring the pulse rate pickups, voltage detection circuits, and breaker relays. The terminal blocks can accept wires up to #12 AWG and are secured with screws.

How does the terminal board interact with the turbine control system?

The board interfaces with the turbine control system, such as the Mark VIeS control system, and works with I/O packs and other terminal boards (e.g., PTUR, YTUR). It ensures that trip signals, turbine speed inputs, and ESTOP conditions are communicated effectively to the control system.