General Electric IS200VTURH2BAC Mark VI Vibration Transducer Interface Module

Description

The IS200VTURH2BAC functions as a high-density vibration transducer interface module manufactured by General Electric as part of the Mark VI Speedtronic turbine control platform. This module interfaces with terminal boards like the TTUR to bring critical shaft speed and sensor data into the controller environment. It serves a key role in the primary overspeed protection loop, routing trip signals through to the TRPG board when fault conditions are identified, which are subsequently resolved through three-relay voting circuits to systematically isolate power from the trip solenoids.

Beyond dynamic sensing inputs, the IS200VTURH2BAC executes the system auto-synchronization algorithm. The board monitors dual Potential Transformer (PT) inputs from both the generator and bus lines to actively track phase and slip variations. When armed by the application runtime code, it leverages an interrupt-driven zero-voltage crossing technique to modulate phase, slip, and acceleration metrics, subsequently triggering the K25 breaker relay closure while maintaining adaptive compensation parameters for physical breaker time lags.

Features

• Multi-Level Turbine Overspeed Protection: Coordinates with speed sensors and terminal components to deliver reliable control, primary, and emergency overspeed intervention loops.
• Two-Out-Of-Three Voting Output: Dispatches independent signals to execute 2/3 voting across hardware relay circuits to secure emergency trip solenoid termination.
• Automatic Synchronization Algorithm (K25): Employs zero-voltage crossing logic to measure phase, slip, and acceleration differentials between generator and bus lines to manage breaker connections.
• Self-Adaptive Breaker Compensation: Features configurable tracking parameters that automatically adjust breaker closure commands based on mechanical time delays.
• Multi-Breaker Timing Capacity: Equipped to compute and administer synchronization routines across two distinct and separate breaker units from a singular card assembly.

Applications

• Mark VI Speedtronic gas and steam turbine overspeed monitoring and protection loops
• Automated generator-to-bus electrical synchronization control
• Triple modular redundant emergency shutdown (ESD) turbine trip interfaces

Technical Specifications

Installation Guidelines

• Breaker Logic Parameterization: Ensure the breaker closure time delays and operational voltage limits are fully configured within the software database prior to enabling the K25 auto-synchronization routine.
• Input Potential Transformer Wiring: Verify that the generator and bus Potential Transformer lines are safely isolated and aligned within the common mode voltage thresholds before termination.
• Sensor Shielding Ground: Terminate all incoming vibration and speed feedback shielding elements to the designated frame earth bar to prevent radio-frequency noise from distorting zero-crossing calculations.