GE IS200EDEXG1B De-Excitation Board | SCR Protection

GE IS200EDEXG1B De-Excitation Bridge and Protection Board

System Protection Architecture

• Primary Function: De-excitation bridge control and field protection
• Operation Mode: Silicon-Controlled Rectifier (SCR) de-excitation
• Backup Protection: Automatic activation if EXTB control fails
• Energy Management: Field current flux and energy dispersion control
• Location: Installed in auxiliary control cabinet

Power & Control Interface

• Operating Voltage: 24 VDC power supply requirement
• Control Source: EXTB board for primary power and control
• Backup Activation: Independent de-excitation initiation capability
• System Integration: Requires connection to EMIO and EXTB boards
• Interface Type: Dual D-Pin connectors for system communication

SCR De-Excitation Mechanism

• Trigger Method: SCR firing when conduction path required
• Current Path: Field discharge inductor activation
• Energy Dissipation: Controlled field energy dispersion
• Overvoltage Protection: Automatic firing on voltage threshold exceedance
• Breakover Diode: Gate-anode protection string for voltage regulation

Physical Specifications

• Weight:0.77kg
• Series Compatibility: Innovation Series and EX2100 systems
• Documentation: GEH-6632 technical manual reference
• Connector System: Two D-Pin connectors for system interface

Safety & Protection Features

• Redundant Operation: Dual-control system reliability
• Overvoltage Response: Automatic SCR firing on voltage surges
• Field Protection: Comprehensive field energy management
• System Integrity: Backup de-excitation during control failures
• Voltage Monitoring: Continuous anode-gate voltage assessment

Application Integration

• Control System: EX2100 excitation control integration
• Board Dependencies: EMIO and EXTB board interconnections
• Protection Coordination: Synchronized with overall system protection
• Energy Management: Controlled field energy dissipation

Package Contents

• IS200EDEXG1B De-Excitation Board
• Configuration documentation
• Installation guidelines
• Technical specifications

Service & Support

• 12-Month Warranty: Comprehensive coverage
• Technical support availability
• Installation assistance
• Quality certification

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