IS200TRPGH2B - Gas Turbine Primary Trip Terminal Board

SPECIFICATIONS:

Part Number: IS200TRPGH2B
Manufacturer: General Electric
Series: Mark VIe
Trip Solenoids: 3
Solenoid Rate Voltage/Current: 125 V dc
Flame Detectors: 8
Number of output relay channels: 12
Product Type: Gas Turbine Primary Trip Terminal Board
Maximum Load Current: 24 V dc
Technology: Surface Mount
Size: 17.8 cm wide x 33.02 cm high
Temperature: -30 to 65ºC
Repair: 3-7 Days
Weight: 2.00 lbs
Country of Origin: USA
Availability: In Stock
Manual: GEH - 6721G

FUNCTIONAL DESCRIPTION:

IS200TRPGH2B is a Gas Turbine Primary Trip Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed turbine control systems. The TRPG in the Mark VIe system is managed by the primary turbine protection controller (VTUR or PTUR) and includes nine magnetic relays organized into three voting circuits interfacing with three trip solenoids (ETDs). It collaborates with the TREG to establish primary and emergency connections to the ETDs. Controlled by PTUR packs on the TTURH1C board, the TRPG supports both Simplex and TMR configurations. The TTURH1C board features D-Type connectors that link to the TRPG and accommodate I/O packs. Additionally, the TRPG integrates inputs from eight flame detectors, critical for gas turbine operations, and incorporates two distinct types of boards within the system.

• The H1A and H1B versions for TMR applications have three voting relays per trip solenoid.
• The H2A and H2B versions for simplex applications have one relay per trip solenoid.

OPERATIONS:

The I/O pack or board executes the primary trip function by controlling the relays on the TRPG, which operates the main protection solenoids. In TMR applications, three inputs are processed using a two-out-of-three hardware voting circuit implemented via relay ladder logic. The I/O pack monitors the current flow in the relay driver control line to assess the energized or de-energized status and the relay coil contact state. Supply voltages are tracked for diagnostics, while a normally closed contact from each TRPG relay is also monitored to ensure proper functionality.

FLAME DETECTORS:

The primary protection system processes signals from eight Geiger-Mueller flame detectors. When no flame is present, the detector charges to the supply voltage. In the presence of a flame, the detector charges to a specific level before discharging through the TRPG. Higher flame intensity results in a higher discharge frequency. During discharge, the I/O pack and TRPG convert the energy into voltage pulses, with pulse rates ranging from 0 to 1,000 pulses per second. These pulses are distributed to all three modules. Pulses exceeding 2.5 volts are interpreted as a logic high, and their frequency over a 40 ms interval is measured using a counter.

WOC offers the largest inventory of GE Distributed Turbine Control System OEM replacement parts. We also provide repair services for faulty boards and supply unused and rebuilt boards, all backed by a warranty. Our experts are available 24/7 to support your OEM requirements and assist with your automation needs. For pricing and availability of parts or repairs, contact our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

What is the function of the Gas Turbine Primary Trip Terminal Board (TRPG)?

The TRPG is a critical component that manages the primary trip function by controlling relays connected to turbine protection solenoids, ensuring the safe operation of gas turbines.

How does the TRPG work in a TMR configuration?

In TMR (Triple Modular Redundant) setups, the TRPG uses a two-out-of-three voting circuit to process inputs from three separate modules, enhancing system reliability and fault tolerance.

What types of inputs does the TRPG handle?

The TRPG processes inputs from eight Geiger-Mueller flame detectors and monitors relay control lines and contact statuses for diagnostic purposes.

What is the role of voltage pulses in the TRPG system?

Voltage pulses generated by flame detectors are processed by the TRPG to measure flame intensity, with pulse rates analyzed to ensure proper turbine operation.