The GE IS200TRPAH2AFD is a Primary Trip Terminal Board (PTTB) within the Mark VIe control system for aeroderivative turbines.

• Function: It monitors turbine speed and voltage levels, and if it detects an abnormal condition exceeding the set thresholds, it triggers an emergency trip by sending a signal to trip the main breaker coil.
• Features:
  • Speed Sensing Inputs: Supports up to twelve passive pulse rate devices for accurate speed measurement using a toothed wheel.
  • Trip Coil Outputs: Provides two TMR (Trip Module Redundant) voted outputs at either 24 V DC (H1) or 125 V DC (H2) for reliable and synchronized tripping of the main breaker.

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