Description
The GE IS200TTURH1C is a TTUR Turbine Control Terminal Board used in GE Speedtronic turbine-control architectures. It is a termination/interface board associated with the PTUR and VTUR turbine-control boards and is used for hardware-level signal routing, turbine protection, and generator synchronization functions.
The board is particularly associated with primary turbine protection input (TTUR). GE wiring documentation identifies IS200TTURH1C as the TTUR terminal board and shows connections for generator breaker status/commands, generator and system-bus voltage signals, shaft-speed inputs, and related turbine protection signals.
Main Function
The IS200TTURH1C provides the physical termination and signal-interface point between field wiring and the turbine-control electronics.
Typical architecture:
Field Sensors / Generator Signals → IS200TTURH1C → PTUR / VTUR I/O → Mark VI / Mark VIe Control System
It works with related turbine I/O boards to handle signals used for turbine speed monitoring, generator synchronization, breaker control, and protection logic.
Product Datasheet
| Parameter | Specification |
|---|---|
| Manufacturer | GE General Electric |
| Model | IS200TTURH1C |
| Functional Group | TTUR |
| Product Type | Turbine Control Terminal Board |
| System | GE Speedtronic Mark VI / Mark VIe |
| Main Function | Turbine Signal Termination & Interface |
| Application | Turbine Control / Protection |
| Primary Function | Primary Turbine Protection Input |
| Overspeed Trip Signals | 3* |
| Pulse Rate Devices | 12* |
| Associated Board | PTUR |
| Associated Board | VTUR |
| Board Revision | Functional Revision C |
| Assembly Type | Standard PCBA |
| Coating | Conformal-coated variant information should be verified |
| Configuration | Simplex / TMR dependent on system |
| Connectors | D-shell, plug connectors, terminal blocks |
| Relays | Surface-mounted relays |
| Transformers | 2 |
| Installation | GE turbine-control cabinet |
| Application | Gas & Steam Turbine Control |
*Third-party technical references list three overspeed trip signals and twelve pulse-rate devices for this specific board.
Key Features
- TTUR turbine-control terminal board
- Primary turbine protection interface
- Designed for GE Speedtronic turbine systems
- Interfaces with PTUR and VTUR boards
- Generator synchronization signal handling
- Turbine speed/pulse-rate signal termination
- Generator breaker status and command connections
- Surface-mounted relays and transformers
- Jumper-configurable system architecture
- Suitable for legacy GE turbine-control maintenance
Typical Applications
- Gas turbine control
- Steam turbine control
- Generator synchronization
- Turbine protection
- Overspeed protection
- Generator breaker control
- Power-generation plants
- Industrial turbine-generator packages
- GE Mark VI / Mark VIe systems
GE wiring documentation shows the TTUR board handling generator voltage, system-bus voltage, breaker status/commands, and multiple high- and low-pressure shaft speed inputs.
Installation & Commissioning
- Shut down and electrically isolate the turbine-control cabinet.
- Record the existing IS200TTURH1C part number and hardware revision.
- Photograph all terminal blocks and connectors before removal.
- Identify the associated PTUR and VTUR boards.
- Verify field wiring against the original cabinet drawings.
- Inspect the replacement PCB and connector contacts.
- Install the board in the correct rack/cabinet position.
- Reconnect all field and I/O wiring.
- Verify generator-voltage and system-bus-voltage connections.
- Check shaft-speed and pulse-rate input wiring.
- Verify breaker-status and breaker-command circuits.
- Check the applicable simplex/TMR configuration.
- Power up and review system diagnostics.
- Perform controlled signal and protection tests before returning the turbine to service.
Compatibility Notes
There is some inconsistent marketplace terminology for this part. Several suppliers call it a Turbine Control Terminal Board, while others describe it as a Turbine Specific Primary Trip Terminal Board. The TTUR designation and GE wiring documentation support its role as a turbine protection/termination interface rather than a standalone CPU or general-purpose I/O module.
The IS200TTURH1C is also associated with later Speedtronic systems, including Mark VI and Mark VIe, although the exact system compatibility should be checked against the installed turbine-control architecture.
Do not substitute another TTUR revision simply because the model prefix is similar. Match:
- Exact part number
- Functional revision
- Hardware revision
- Connector arrangement
- PTUR/VTUR configuration
- Simplex or TMR architecture
- Existing turbine-control wiring
The supplied eBay listing identifies the item as IS200TTURH1C GE Mark VIe Turbine Control.
Product Identification
Brand: GE General Electric
Model: IS200TTURH1C
Product Type: Turbine Control Terminal Board
Functional Group: TTUR
System: Mark VI / Mark VIe Speedtronic
Primary Function: Turbine Protection & Signal Termination
Associated Boards: PTUR / VTUR
Application: Gas & Steam Turbine Control
