GE IS200EDEXG1BBB De-Excitation Bridge and Protection Board

Overview

The GE IS200EDEXG1BBB is a De-Excitation Bridge and Protection Board designed for GE EX2100 excitation control systems. It safely dissipates energy from the generator field during shutdowns. This prevents overspeed conditions and protects the generator. The board integrates with EMIO and EXTB boards to ensure coordinated de-excitation. It installs in the auxiliary cabinet and powers up using the Mark VIe system’s internal supply.

Technical Specifications

• Board Type: De-Excitation Bridge and Protection Board

• Series: GE EX2100

• De-Excitation Mode: Silicon-controlled rectifier (SCR) for controlled energy dissipation

• Configurable Jumpers: JP1–JP6 for system customization

• Connectors: Two D-pin connectors for secure connections

• Sensors: Hall effect conduction sensors for precise monitoring

• Integration: Works with EMIO and EXTB boards for coordinated operation

• Power Supply: EPSM module for stable operation

• Weight: 1.53 kg (3 lbs. 6 oz.)

• Operating Location: Auxiliary cabinet

• Power Requirements: Powered by Mark VIe system internal supply

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: -40°C to 85°C (-40°F to 185°F)

• Humidity: 5% to 95% relative humidity, non-condensing

• Diagnostics: Built-in diagnostics for self-monitoring and fault detection

• Redundancy Support: Supports redundant configurations such as Triple Modular Redundancy (TMR)