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GE IS200TTURH1C

Product Name:​ Mark VI/Mark VIe Turbine Control Terminal Board (Synchronization & Trip Logic)
Product Introduction:​ The IS200TTURH1C is a Turbine Control Terminal Board for the GE Mark VI and Mark VIe Speedtronic systems. It provides generator synchronization and trip logic interfacing through hardware mechanisms and interconnections. Note: This is a synchronization/trip terminal board, not a primary speed control module.
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Detailed content

Technical Specifications:
  • Manufacturer:​ GE Fanuc
  • Model:​ IS200TTURH1C
  • Type:​ Turbine Control Terminal Board (Synchronization & Trip Logic)
  • Series:​ Mark VI / Mark VIe Speedtronic
  • Onboard Relays:​ 3 surface-mounted relays
  • Interfaces:​ Six 37-pin D-shell connectors (male/female)
  • Transformers:​ 2 centrally positioned transformers
  • Variable Resistors:​ Onboard for signal adjustment
  • Voting Configuration:​ Simplex or TMR (Triple Modular Redundant), jumper-selectable
  • Rated Speed:​ 5100 RPM
  • Power Supply:​ 125 VDC (typical)
  • Dimensions:​ ~35 × 25 × 6 cm
  • Weight:​ 0.5–0.8 kg (some references indicate 1.3–1.6 kg)
  • Operating Temperature:​ -30°C to +65°C
  • Storage Temperature:​ -40°C to +85°C
  • Humidity:​ 5% to 95% RH (non-condensing)
Key Features:
  • Configurable simplex or TMR voting via jumper switches
  • Interfaces with PTUR (Primary Turbine) and VTUR (Vibration/Turbine) boards
  • Handles generator synchronization and turbine trip interfacing
  • Onboard relays and transformers for signal conditioning
Working Principle:​ The board collects turbine speed signals (MPUs) and synchronization inputs, then routes and conditions them for use in protection and control logic. All protection decisions (such as overspeed trip) are executed by Mark VI controller modules like VTUR/PTUR — the TTUR itself does not make protection decisions.
Application Scenarios:​ Gas turbine control, steam turbine control, generator synchronization, breaker control systems, overspeed protection, and turbine safety interlocks.
Installation Requirements:​ Mount in a standard Mark VI/VIe rack. Set jumper switches for simplex or TMR voting according to system architecture. Connect 37-pin cables to PTUR and VTUR boards. Verify relay operation and transformer continuity using diagnostic tools. Perform synchronization tests to confirm proper generator paralleling functionality.
Usage Notes:​ Ensure jumper settings match the redundancy architecture (simplex vs. TMR) before installation. Pair with compatible PTUR/VTUR boards for complete turbine control functionality.

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