Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric (GE) |
| Model | IS200SPROH1AAB |
| MRP Number | MRP663860 |
| Product Family | GE Mark VI |
| Product Type | Terminal / Interface Board |
| Application | Turbine Control and Protection |
| System | GE Speedtronic Mark VI |
| Board Function | Field-signal termination/interface |
| Hardware Revision | H1AAB |
| Board Identifier | SPROH1AAB |
| Reported Dimensions | Approximately 178 × 102 × 76 mm in one equipment reference |
| Typical Installation | GE turbine-control cabinet |
There is an important procurement warning here. One secondary source calls the part a Mark VIe control-system processor, while another identifies it as a Mark VI terminal board. The latter is more consistent with the IS200/SPRO board identification and should be treated as the working description, but the host-system drawing should be used for final engineering approval.
I would not accept published claims such as “256 MB RAM,” “PowerPC 750,” “PROFIBUS,” or specific digital/analog channel counts for this part without a GE drawing or revision-specific manual. Those figures appear in conflicting secondary listings and are not sufficiently reliable for a procurement specification.
IS200SPROH1AAB
Application Scenarios & Pain Points
A turbine protection cabinet is not a place for guesswork. A board can look electrically healthy on a bench while a damaged terminal, poor contact, or wrong board revision causes a trip circuit or field-input problem once the turbine is back in service.
Typical Applications
- GE Mark VI turbine control: The IS200SPROH1AAB is identified with the Mark VI turbine-control family and functions as terminal/interface hardware rather than the primary controller.
- Turbine protection circuits: Its reported application involves protection-related field signals. Some supplier references specifically describe it as a turbine protection board, although the exact channel architecture should be confirmed from the cabinet drawings.
- Field signal termination: Terminal-board hardware provides the physical interface between field wiring and the control electronics. That makes connector condition and terminal integrity just as important as the PCB itself.
- Legacy power-generation maintenance: It is particularly relevant when an operating Mark VI installation needs an exact replacement rather than a full control-system migration.
Field Case:
A plant experiencing sporadic turbine protection alarms should not immediately blame the processor. Check the terminal board, field wiring, connector seating, cabinet vibration, and signal reference points first. On an older cabinet, a slightly loose termination can create an alarm that disappears when the cabinet door is opened or the wiring harness is touched.
Related Products
- GE IS200SPROH1AAB — The exact board designation supplied here. MRP663860 should be retained with the model number when ordering because it provides an additional identification reference.
- GE IS200SRTDH2ACB — A related turbine-control/protection board frequently listed alongside the SPROH1AAB. It performs a different interface/protection function and should not be treated as a direct substitute.
- GE IS200TBAIH1C — Mark VI terminal/interface board referenced as compatible equipment alongside IS200SPROH1AAB. It serves a different signal-interface role.
- GE IS200VAICH1D — Mark VI analog-interface board appearing in the same system environment. It is more closely associated with analog signal interfacing and is not a replacement for SPROH1AAB.
- GE IS200VRTDH1DAB — Mark VI turbine-control card associated with turbine-related input/interface functions. It may be installed in the same overall control architecture, but its electrical function differs.
- GE IS215UCVEH2AE — UCVE controller hardware used in GE turbine-control systems. This is processor/control-level equipment and should not be confused with the SPROH1AAB terminal board.
- GE IS200TTURH1B — Mark VI turbine terminal/interface hardware used for turbine-specific signals. It is a related system component rather than a direct replacement.
- GE IS200RACK1A — Mark VI rack hardware used to accommodate control components. It provides the mounting/system infrastructure rather than the signal-interface function of the SPROH1AAB.
