IS200TPROH1B IS200TPROH1BBB | GE Terminal Board Mark VI

GE IS200TPROH1B / IS200TPROH1BBB Terminal Protection Board

Product Overview

The GE IS200TPROH1B and ordering code IS200TPROH1BBB are terminal protection boards within the Mark VI turbine control system. Manufactured in the United States by General Electric, this module plays a critical role in delivering turbine safety through overspeed, trip, and voltage monitoring.

Compact in design, the IS200TPROH1B measures 16 cm × 16 cm × 12 cm and weighs 0.8 kg, making it suitable for dense rack or panel installations. It transmits essential signals such as generator voltage, bus voltage, turbine speed, and temperature directly to the VPRO module, enabling rapid protective actions.

Functional Role

The IS200TPROH1B integrates with VPRO boards to establish an independent overspeed and synchronous protection system. Together, these modules manage trip solenoids, regulate DC supply lines, and execute emergency shutdowns, ensuring turbine safety during critical events.

Key Functions

1. Emergency Trip Execution – Controls up to three trip solenoids linked to TREx and TRPx boards (TRPG, TRPL, TRPS).

2. Turbine Trip Control – Routes the positive and negative poles of the 125 VDC trip supply to solenoid valves.

3. Overspeed Protection – Provides high-speed overspeed and synchronous trip protection in collaboration with the VPRO.

4. System Stability – Coordinates with Mark VI hardware to prioritize turbine safety during fault conditions.

Technical Specifications