GE IS200TTURH1BEC Turbine Termination Board for Mark VI Systems

The GE IS200TTURH1BEC is a Turbine Termination Board, part of GE’s Mark VI systems, designed for gas, steam, and wind turbine control. It interfaces with the turbine I/O processor, managing critical inputs/outputs: 12 passive pulse rate devices for speed measurement, generator/bus voltage signals from potential transformers, 125V DC output for main breaker coil (52G), and shaft voltage/current sensor inputs.

Featuring relays K25, K25P, and K25A both of them are required to close for breaker power—it supports both simplex and TMR configurations via jumpers. Connectors include JR5 in speed signals, JR1 in other signals, and additional TMR-compatible ports like JS5, JT5. Wiring uses terminal blocks TB1/TB2 with grounded shield strips; TB3 accommodates optional TTL connections. Equipped with relays, transformers, and D-shell connectors, it ensures robust performance in industrial turbine environments.

Features:
Multifunctional I/O: Handles speed measurement, voltage monitoring, breaker control, and shaft signal processing, essential for turbine operation.

Redundancy Support: Configurable via jumpers for Simplex or TMR systems, with TMR using six connectors for fault tolerance.

Critical Relays: Relays K25, K25P, K25A enable main breaker operation, ensuring safe power distribution.

Flexible Connectivity: Includes D-shell connectors, terminal blocks, and TB3 for TTL, adapting to diverse sensor/device inputs.

Mark VI Compatibility: Integrates with Mark VI/VIe systems, supporting gas, steam, and wind turbines—an upgrade over Mark V’s limited applications.