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SPECIFICATIONS:
Part Number: IS200TPROH1CBB
Manufacturer: General Electric
Series: Mark VI
Board Type: Emergency Protection Terminal Board
Number of Input Channels: 9
Power Supply Voltage: 28 V dc
MPU Pulse Rate Range: 2 Hz
MPU Input Circuit Sensitivity: 27 mV
Maximum lead Resistance: 15 maximum
Synchronization Accuracy: ±1 ns
Clock Frequency: Up to 200 MHz
Operating Temperature Range: 30°C to +65°C
Dimensions: 17.08 cm wide x 33.02 cm high
Mounting Type: Surface-mount technology (SMT)
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH6721L
FUNCTIONAL DESCRIPTION:
IS200TPROH1CBB is an Emergency Protection Terminal Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Turbine Control Systems. The TPRO module delivers speed, temperature, generator voltage, and bus voltage signals to the VPRO as part of a separate, independent emergency overspeed and synchronization protection system. This protection system features triple redundant VPRO boards housed in a different module from the turbine control system and manages trip solenoids via TREX (TREG, TREL, or TRES). TPRO feeds inputs to all three VPRO boards.
The VPRO board is responsible for the emergency trip function, allowing for the connection of up to three trip solenoids between the TREx and TRPX (TRPG, TRPL, or TRPS) terminal boards. TREx supplies the positive side of the 125 V DC to the solenoids, while TRPX provides the negative side. Either of these boards can initiate a turbine trip. The VPRO board handles emergency overspeed protection and emergency stop functions, controlling 12 relays on TREG. Among these relays, nine are organized into three groups of three for voting on inputs that regulate the three trip solenoids. Additionally, a secondary TREG board can be activated from the VPRO via J4.
INSTALLATION:
The first terminal block on the TPRO is connected to the generator and bus potential transformers, as well as analog inputs and thermocouples. The second terminal block is designated for the magnetic speed pickups. Jumpers JPIA and JPIB can be configured to provide either a 4-20 mA or voltage input for the first of the three analog inputs. The wiring connections are depicted in the following figure, which illustrates two cables leading to each of the three VPRO boards.
OPERATION:
The primary function of the TPRO is to deliver speed signals to the VPRO for emergency overspeed (EOS) protection of the turbine. Additionally, TPRO provides generator signals for backup synchronization check protection, three analog current inputs, and nine thermocouple inputs, mainly aimed at preventing exhaust over-temperature issues in gas turbines. The VPRO supplies 28 V DC to the TPRO to power the three analog input transmitters.
SPEED CONTROL AND OVERSPEED PROTECTION:
Speed regulation and overspeed protection are achieved using six passive magnetic speed pickups. The first set of three pickups is monitored by the controller, which utilizes the median signal for speed control and primary overspeed protection. The second set is independently connected to the three VPROs in the protection module. The TPRO terminal board is designed to accommodate either nine passive magnetic speed pickups or active pulse rate transducers (TTL type), with three pickups monitored by each of the three VPROs.
WOC has the largest stock of OEM replacement parts for GE Speedtronic Turbine Control Systems. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.
What is the primary function of the TPRO?
The TPRO primarily supplies speed signals to the VPRO for emergency overspeed (EOS) protection of the turbine.
How does TPRO contribute to the protection of the turbine?
In addition to providing speed signals, TPRO supplies generator signals for backup synchronization check protection, along with three analog current inputs and nine thermocouple inputs for exhaust over-temperature protection.
How many speed pickups does the system use?
The system utilizes six passive magnetic speed pickups, with three monitored by the controller for speed control and primary overspeed protection, and the other three connected to the VPROs for additional protection.
