GE IS230TNSVH3A TNSV Thermocouple Analog Terminal Board For Speedtronic Mark VI Mark VIe Turbine Control System
- Product Code: IS230TNSVH3A
- Availability: In Stock
GE IS230TNSVH3A TNSV Thermocouple Analog Terminal Board For Speedtronic Mark VI / Mark VIe Turbine Control System
Manufacturer: GE Vernova / GE Gas Power
Part Number: IS230TNSVH3A (TNSV Thermocouple Input Terminal Board, 3A hardware variant)
Product Type: Rack-mount analog signal terminal interface board, thermocouple front-end signal conditioning card for Mark VI VME I/O rack
Matching Platform: GE Speedtronic Mark VI / Mark VIe gas/steam/combined cycle turbine control system, matched with VTCC temperature acquisition CPU module
Core Function: Dual terminal strip TB1/TB2 total 48 thermocouple input channels, support E/J/K/T standard thermocouple types, cold junction compensation built-in, signal filtering & noise suppression, shielded signal isolation, multi-group J-series internal connectors to VME backplane, channel open-circuit fault detection, front terminal wiring for field temperature sensors, metal shield frame anti-EMI design
1. Product Overview
IS230TNSVH3A (TNSV = Thermocouple Signal Terminal Board) is the dedicated field temperature signal interface terminal board for GE Speedtronic Mark VI turbine control racks, serving as the physical wiring bridge between furnace/pipe thermocouple sensors and the VTCC temperature acquisition main CPU card inside the VME rack.
The board carries two independent barrier terminal blocks TB1 and TB2, each with 24 thermocouple input terminals, providing a total of 48 temperature measurement channels. It supports four mainstream thermocouple types E, J, K, T widely used in power plant turbine exhaust, combustion chamber, bearing and pipeline temperature monitoring. Built-in precision cold junction compensation circuit eliminates temperature measurement drift caused by terminal ambient temperature changes, and multi-stage RC filter circuits suppress high-frequency electromagnetic interference from turbine hall high-voltage equipment.
Multiple J-type internal connectors (JRA/JRB, JSA/JSB, JTA/JTB) on the rear side transmit conditioned thermocouple analog signals to the VTCC processing board via the VME rack backplane. The PCB is surrounded by an all-around metal shielding frame fixed by three screw mounting points, effectively isolating external EMI to guarantee stable weak thermoelectric signal transmission.
It integrates channel open-circuit self-diagnosis logic, which can upload broken thermocouple wire faults to the main control system for alarm. It cannot operate independently and must be matched with Mark VI VME backplane, VTCC temperature CPU, rack power supply and complete turbine control cabinet to realize full-range temperature monitoring and protection logic.
This model is standard spare hardware for old Mark VI gas/steam turbine units, widely used in power plant overhaul, cabinet transformation and daily temperature signal channel fault replacement maintenance.
2. Complete Technical Specifications
• Thermocouple Capacity: Dual terminal strips TB1/TB2, 24 channels each, total 48 TC input channels
• Supported TC Types: E, J, K, T industrial standard thermocouples, grounded / ungrounded sensor compatible
• Signal Processing: Onboard cold junction compensation, multi-stage EMI filter, low-noise signal conditioning circuit
• Internal Rack Interfaces: JRA/JRB, JSA/JSB, JTA/JTB multi-pin J connectors for VME backplane VTCC connection
• Diagnostic Function: Thermocouple wire open-circuit detection per channel, fault signal upload to VTCC CPU
• Mechanical Shield: Full surrounding metal shielding frame, three-point screw fixed mounting to rack shield bar
• Power Supply: 24VDC auxiliary logic power from Mark VI VME backplane, typical power consumption <8.5W
• Operating Temperature: Industrial grade -20℃ ~ +65℃ continuous ventilation cabinet operation
• Storage Temperature: -40℃ ~ +85℃; Relative Humidity: 5% ~ 95% RH non-condensing
• Mechanical Dimension: Standard Mark VI VME rack terminal board, full assembly weight approx 0.6kg, IP20 front dustproof grade
• PCB Protection: Full IPC-CC-830 conformal coating, gold-plated internal connector pins, anti-static industrial circuit board
• System Compatibility: Full compatibility with all GE Mark VI / Mark VIe VME racks, VTCC temperature acquisition CPU modules
• Compliance Standards: IEC 61000 industrial EMC anti-interference standard, power turbine control equipment safety specification
3. Core Hardware Advantages
1. 48-channel large-capacity thermocouple terminal integration, single board meets full turbine multi-point temperature measurement demand without multiple expansion boards
2. Built-in cold junction compensation + multi-stage filter, high measurement accuracy, effectively eliminates ambient temperature drift and strong electromagnetic noise interference
3. Full surrounding metal shielding frame design, excellent anti-EMI performance adapting to harsh turbine hall high-interference environment
4. Independent open-circuit fault detection for each channel, fast positioning of broken thermocouple wiring to reduce maintenance downtime
5. Dual barrier terminal strip layout, clear field wiring separation, convenient on-site sensor cable connection and troubleshooting
4. Typical Application Scenarios
• Thermal power plant Mark VI gas turbine exhaust, combustion chamber, bearing temperature measurement core thermocouple terminal board
• Combined cycle power plant steam turbine pipeline and cylinder temperature monitoring signal interface board
• Petrochemical self-owned power station gas generator set Mark VI rack temperature signal acquisition spare terminal module
• Offshore power platform gas turbine multi-point temperature protection front-end wiring board
• Old Mark VI turbine control cabinet renovation, daily temperature sensor channel fault replacement spare TNSV terminal board
GE Vernova © IS230TNSVH3A TNSV Thermocouple Analog Terminal Board For Speedtronic Mark VI Turbine Control System