IS200TTURH1A - Thermocouple Input Terminal Board

SPECIFICATIONS:

Part Number: IS200TTURH1A
Manufacturer: General Electric
Series: Mark VI
Product Type: Thermocouple Input Terminal Board
Operating System: QNX
Power Requirements: +5 V dc, 6 A
Number of input channels: 12
Number of outputs: 125 V dc
Trip Solenoid Rating: 125 V dc
Power supply voltage: 28 V dc
Voltage Range: 18 - 32 VDC
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: 40 to 70°C
Size: 33.0 cm high x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6421V

FUNCTIONAL DESCRIPTION:

IS200TTURH1A is a Thermocouple Input Terminal Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Gas Turbine Control Systems. This board is designed to interface with multiple thermocouples, allowing for simultaneous temperature measurements at various points. It typically includes features such as cold junction compensation (CJC) to ensure accurate readings by correcting for temperature differences at the connection points. Additionally, these boards often incorporate signal conditioning components like amplifiers and filters to enhance the quality of the low-voltage signals generated by the thermocouples. Depending on the design, some boards may also include built-in analog-to-digital converters (ADCs) to digitize the analog signals for further processing in digital systems. Thermocouple input terminal boards are generally compatible with specific thermocouple types, such as Type K or Type J, and they feature secure connection options, like screw or spring terminals, to ensure reliable performance in critical applications. The Primary Turbine Protection Input terminal board works with VTUR and has the following inputs and outputs:

• Twelve passive pulse rate devices sensing a toothed wheel to measure the turbine speed
• Generator voltage and bus voltage signals from potential transformers
• 125 V dc output to the main breaker coil for automatic generator synchronizing
• Inputs from the shaft voltage and current sensors to measure induced shaft voltage and current

TTUR has three relays, K25, K25P, and K25A, that all have to close to provide 125 V dc power to close the main breaker 52G. The speed signal cable to VTUR uses the JR5 connector, and the other signals use the JR1 connector. For TMR systems, signals fan out to the JR5, JS5, JT5, JR1, JS1, and JT1 connectors. For the Mark VI system, the VTUR processor works with TTURH1B. Simplex and TMR systems are supported. With TMR systems, TTURH1B is cabled to three VTUR boards.

INSTALLATION:

Magnetic pick-ups, shaft pick-ups, potential transformers, and breaker relays are wired to two I/O terminal blocks TB1 and 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. Jumpers JP1 and JP2 select either SMX or TMR for relay drivers K25 and K25P. TB3 is for optional TTL connections to active speed pickups; these require an external power supply. Simplex systems use cable connectors JR5 and JR1. TMR systems use all six cable connectors.

OPERATION:

In the simplex application, up to four pulse rate signals may be used to measure turbine speed. Generator and bus voltages are brought into TTUR for automatic synchronizing in conjunction with VTUR, the turbine controller, and the excitation system. TTUR has a permissive generator synchronizing relays and controls the main breaker relay coil 52G. In TMR applications all inputs fan to the three control racks. Control signals coming into TTUR from R, S, and T are voted before they actuate permissive relays K25 and K25P. Relay K25A is controlled by the VPRO and TREG boards.

WOC has the largest stock of OEM replacement parts for GE Speedtronic Gas 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.

FREQUENTLY ASKED QUESTIONS:

What is a Thermocouple Input Terminal Board?

A Thermocouple Input Terminal Board is a circuit board that allows multiple thermocouples to be connected simultaneously. It provides interfaces for accurate temperature measurement and often includes features like cold junction compensation and signal conditioning.

How does a Thermocouple Input Terminal Board work?

The board connects to thermocouples, receives their low-voltage signals, and processes these signals through components like amplifiers, filters, and sometimes analog-to-digital converters (ADCs) for accurate temperature readings.

What types of thermocouples are compatible with these boards?

Thermocouple Input Terminal Boards are typically designed to support specific types of thermocouples, such as Type K, Type J, Type T, etc. It's important to ensure that the board you choose is compatible with the type of thermocouple you are using.