Overview

The GE IS200ECTBG1ACB Exciter Contact Terminal Board is a high-reliability interface module designed for use in GE’s EX2100 excitation systems. It serves as a critical link between the control system and external field devices, managing both input signals and output commands related to excitation and generator protection.

This board supports redundant control configurations, receiving power from both M1 and M2 controllers to ensure uninterrupted operation. It features six monitored auxiliary inputs and six output channels, including two trip outputs for lockout functions and four general-purpose Form-C outputs. These outputs are supervised by the board to ensure safe and deterministic operation.

Moreover, the ECTBG1ACB is engineered for harsh industrial environments, with an operating temperature range of –30°C to +65°C. Its modular design allows for easy integration and replacement within EX2100 racks, making it ideal for both new installations and system upgrades.

Technical Data

Typical Applications

• Excitation System Control: Interfaces with field devices to manage excitation enable/disable, field flashing, and de-excitation.

• Generator Protection: Provides trip and lockout signaling for overvoltage, overcurrent, or fault conditions.

• Redundant Control Architectures: Used in dual-controller setups to ensure continuous operation during controller switchover.

• Power Plant Automation: Supports turbine generator control in gas, steam, and hydroelectric plants.

• System Retrofits: Compatible with legacy Mark VI and EX2100 systems for modernization projects.

For instance, in a gas turbine generator system, the ECTBG1ACB board can trigger a lockout relay if a fault is detected, ensuring safe shutdown of the excitation system. In addition, its monitored inputs help verify the status of breaker contacts and auxiliary devices in real time.

FAQ

Q1: What is the main function of the IS200ECTBG1ACB board?
A1: It provides monitored inputs and supervised outputs for excitation control and generator protection.

Q2: Is this board suitable for redundant control systems?
A2: Yes, the G1 variant is designed for dual-controller (M1/M2) configurations.

Q3: What voltage is used for input contact monitoring?
A3: The board uses 70 VDC to power and monitor auxiliary contact inputs.

Q4: Can this board be used in outdoor environments?
A4: It must be installed in a protected control cabinet; it is not rated for direct outdoor exposure.

Q5: What industries commonly use this board?
A5: Industries include power generation, oil & gas, petrochemical, and heavy industrial automation.