Product Overview

The General Electric IS200ECTBG2ADE is a high-reliability Exciter Contact Terminal Board engineered for the EX2100 Excitation Control System. Functioning as a specialized I/O interface, this board is purpose-built for Simplex Mode operations, distinguishing it from redundant-mode variants. It manages critical discrete signals between the generator field control logic and the primary excitation hardware. By utilizing an isolated +70V DC wetting voltage provided by the Exciter Power Supply Module (EPSM), the board ensures high-integrity contact sensing for auxiliary inputs and delivers robust relay-driven outputs for system tripping and status indication.

Key Technical Characteristics and Hardware Parameters

The IS200ECTBG2ADE is designed for seamless integration with the EMIO (Exciter Main I/O) board, acting as the physical termination point for field wiring.

• Manufacturer General Electric (GE)

• Model Number IS200ECTBG2ADE

• System Series EX2100 Excitation Control

• Operational Configuration Simplex (Non-Redundant) Mode

• Contact Inputs 6 Auxiliary contact inputs (including dedicated 52G and 86G monitoring)

• Contact Outputs 2 Trip contact outputs and 4 Form-C (SPDT) relay outputs

• Wetting Voltage +70V DC isolated supply for input contact excitation

• Signal Path Interfaces with EMIO board to convert field signals into logic-level gate pulses

• Physical Weight 0.66 kg

• Dimensions 33 x 17.7 x 5.5 cm

• Operating Environment Designed for continuous duty in industrial DCS and power generation enclosures

Industrial Applications and Operational Use Cases

This terminal board is a fundamental component in the automation of synchronous generator excitation, providing the necessary hardware links for safety and synchronization.

• Generator Breaker Monitoring (52G) Real-time tracking of the generator circuit breaker status to ensure the excitation system logic knows exactly when the unit is online or offline.

• Safety Lockout Management (86G) Interfacing with the master lockout relay to prevent accidental excitation during maintenance or following a protective trip event.

• Emergency Trip Sequences Utilizing high-speed trip contact outputs to de-excite the generator field rapidly during fault conditions, protecting the rotor and stator from damage.

• Auxiliary Equipment Control Managing Form-C relay outputs to signal external plant systems, such as cooling pumps or ventilation fans, based on the excitation system's status.

• Simplex Control Upgrades Serving as a direct replacement or expansion board for EX2100 systems configured for single-channel control where redundancy is not a requirement.

By employing the IS200ECTBG2ADE, power plant operators achieve precise control over the discrete logic required for excitation, ensuring stable generator performance and enhanced equipment longevity through reliable signal conditioning.