IS200TRPAH1B - Turbine Primary Trip Terminal Board

SPECIFICATIONS:

Part Number: IS200TRPAH1B
Manufacturer: General Electric
Series: Mark VI
Product Type: Turbine Primary Trip Terminal Board
Number of inputs: 3x4 passive
Number of outputs: 2
Contact ratings: 28 V dc max
MPU pulse rate range: 2 Hz to 20 kHz
Voltage Range: 18 - 32 VDC
MPU pulse rate accuracy: 0.05% of reading
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to 65°C
MPU input circuit sensitivity: 27 mV pk
Size: Size 33.0 cm high x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721D

FUNCTIONAL DESCRIPTION:

IS200TRPAH1B is a Turbine Primary Trip Terminal Board manufactured and designed by General Electric as part of the Mark VI Series, which is used in GE Speedtronic Gas Turbine Control Systems. The turbine primary trip terminal board, TRPAH1A, 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.
• For TMR systems, signals fan out to the PR3, PS3, PT3, JR4, JS4, and JT4 connectors.
• TRPAH1B supports the Mark VIe system and accommodates PTUR I/O packs.

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.

OPERATION:

System Design: The TRPA board is designed for application in two different ways. When a TTUR terminal board is used to hold three PTUR I/O packs the TRPA terminal board may be connected using three cables with DC-37 pin connectors on each end. In this mode of operation, the TRPA provides two contact-voted trip relay outputs, ESTOP, and four voltage sensors. TTUR provides the normal set of features described for that board. The TRPA speed inputs are not active and should not be connected with this board arrangement. The TRPA board may also be used with three PTUR I/O packs mounted directly on the TRPA. In this mode of operation, the speed inputs to TRPA become active paths into the PTUR allowing for a single terminal board primary trip solution.

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FREQUENTLY ASKED QUESTIONS:

How does the terminal board ensure rapid and precise turbine shutdown during emergencies?

The terminal board is equipped with two sets of TMR-voted output contacts, operating at either 24 V DC. These contacts are connected to the main breaker coil, enabling swift and precise response during turbine trip coil activation, ensuring a rapid shutdown when required.

What is the role of the voltage detection circuits on the terminal board?

The terminal board features four 24-125 V DC voltage detection circuits responsible for monitoring the trip string voltage. These circuits continuously monitor the voltage levels, providing essential feedback to ensure the safe and reliable operation of the turbine trip string.

How are the signals distributed in TMR systems?

For TMR systems, the signals fan out to multiple connectors, including PR3, PS3, PT3, JR4, JS4, and JT4 connectors. This distributed arrangement allows for efficient and reliable communication with other connected components, enabling seamless coordination within the TMR system.