Product Core Brief
- Model: IS200SPROH1ADD
- Brand: GE (General Electric)
- Series: Mark VIe / Mark VI Speedtronic
- Core Function: Backup protection terminal board for speed and voltage sensing
- Type: PPRO Terminal Board (SPROH1A family)
- Key Specs: PT inputs; speed signal conditioning; DC-37 backup trip interface
- Condition: New Original (New Surplus), not refurbished
Product Introduction
In a Mark VIe turbine or excitation cabinet the backup protection layer provides an independent path for speed and voltage monitoring when the primary control path is unavailable. The GE IS200SPROH1ADD serves as the field terminal board in that layer, conditioning speed signals, accepting bus and generator PT inputs, and linking to the backup trip relay board through a DC-37 connector while hosting the PPRO I/O pack.
Maintenance teams keep this board in stock because a failed terminal interface can disable the entire backup protection chain; matching the exact revision and terminal style (barrier vs Euro-block) avoids the most common delays during an unplanned outage.
