IS200TRPAH1B - Turbine Primary Trip Terminal Board

SPECIFICATIONS:

Part Number: IS200TRPAH1B
Manufacturer: General Electric
Series: Mark VIe
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: 33.0 cm high x 17.8 cm
Repair: 3-7 Days
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 VIe Series, which is used in GE Distributed Turbine Control Systems. The turbine primary trip terminal board, TRPAH1B, 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 the 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:

The TTL pulse rate pick-ups, voltage detection circuits, E-STOP, and the breaker relay are all connected to the I/O terminal blocks labeled TB1, ensuring that critical control and protection signals are centralized for efficient wiring and maintenance. Passive pulse rate pick-ups, which do not provide their own voltage, are routed separately to TB2 to isolate them from active circuits and prevent interference. Each terminal block is secured firmly with two screws and provides 24 connection points, accommodating wires up to #12 AWG. Adjacent to each block, a shield termination strip is installed and connected to the chassis ground, which helps minimize electromagnetic interference and ensures signal integrity for sensitive pulse rate and voltage detection signals.

The Turbine Trip and Pulse Rate Adapter (TRPA) must be programmed according to the desired speed input connections using the provided configuration table. Jumpers JP1 and JP2 are used to select the fanning configuration for the R-section pulse rate pick-ups, allowing them to be distributed to both the S and T PTURs as required. This setup ensures that multiple channels can simultaneously monitor turbine speed and provide redundancy for critical protection functions, thereby enhancing system reliability and operational safety.

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.

SPEED INPUTS: When used with PTUR I/O packs mounted directly on the TRPA, the speed inputs provide two options. Each PTUR I/O pack may receive a dedicated set of four speed inputs from its respective TRPA terminal points, as is done on TTUR. As an option, jumpers P1 and P2 may be placed on the TRPA to take the first four speed inputs (those for the R pack) and fan them to the S and T packs. When this is selected, the terminal board points for S and T speed input become no-connects and should not be used.

EStop: The TRPA includes an EStop function. This consists of an optically isolated input circuit designed for a DC input in the range of 24 V to 125 V nominal. When energized, the circuit enables coil drive power in the R, S, and T relay circuits through independent hardware paths. The response time of this circuit of less than five milliseconds, plus the response time of the trip relays of less than one millisecond, yields very fast EStop response. EStop is monitored by PTUR, but the action to remove trip relay coil power is entirely in the hardware of TRPA.

WOC maintains the largest inventory of OEM replacement parts for GE Distributed Turbine Control Systems, ensuring that you have access to the components you need when you need them. Whether you require unused parts, refurbished boards, or specialized components, our stock is carefully curated to meet the highest quality standards. In addition to supplying parts, we provide expert repair services for faulty or malfunctioning boards, with all repaired or rebuilt units backed by a reliable warranty, giving you complete confidence in the performance and longevity of your turbine control systems.

Our team of skilled professionals is available 24/7 to support your OEM requirements and ensure seamless operation of your automation systems. We are committed to providing responsive and knowledgeable assistance, whether you need guidance on part selection, troubleshooting, or repair solutions. For detailed information on pricing, availability, or specific service requests, please reach out to our team via phone or email, and we will be happy to provide prompt and personalized support tailored to your operational needs.

FREQUENTLY ASKED QUESTIONS:

What is the purpose of the Turbine Primary Trip Terminal Board (TRP)?

The TRP board is designed to receive inputs from various sensors and safety devices such as speed pick-ups, voltage detectors, E-STOP buttons, and breaker relays. It ensures the turbine trips safely during abnormal conditions, protecting both the turbine and associated equipment.

How are inputs wired to the TRP board?

Inputs like TTL pulse rate pick-ups, voltage detection signals, E-STOP, and breaker relays are connected to the I/O terminal blocks (TB1). Passive pulse rate pick-ups are connected to TB2. Each terminal block typically accommodates up to #12 AWG wires, secured with screws.

What causes the turbine not to trip when a speed sensor triggers?

Incorrect wiring, loose connections, or improper polarity can cause non-tripping. It may also result from the TRP board being configured for the wrong sensor type. Inspecting wiring and verifying configuration usually resolves the issue.