GE Innovation IS200EDEXG1B De-Excitation Bridge Board

Product Overview

The IS200EDEXG1B is a De-Excitation Bridge and Protection Board manufactured by GE. This critical component belongs to the Innovation Series EX2100 excitation control system, providing essential protection functions for generator fields.

Technical Specifications

• Manufacturer: General Electric (GE)
• Part Number: IS200EDEXG1B
• Board Description: De-Excitation Bridge and Protection Board
• Series: Innovation Series, EX2100 Excitation System
• Weight: 3 lbs. 6 oz. (1.53 kg)
• Manual Reference: GEH-6632 Technical Documentation
• Power Requirement: 24 VDC Operating Voltage
• Location: Auxiliary Cabinet Installation

Configuration & Connectivity

• Configurable Jumpers: JP1, JP2, JP3, JP4, JP5, JP6
• Connections: 2 D-Pin Connectors for system interface
• Board Interdependence: Requires connection to EMIO and EXTB boards
• Control Interface: EXTB board provides primary power and control
• Backup Function: Can initiate de-excitation if EXTB control fails

Functional Operation

• Primary Function: De-excitation control and field protection
• De-excitation Mode: Silicon-Controlled Rectifier (SCR) technology
• SCR Firing: Activated when conduction path is required
• Current Path: Creates path through field discharge inductor
• Energy Dissipation: Allows field current to flux and disperse field energy
• Backup Protection: Fires on overvoltage if SCR cannot be fired normally

Protection Mechanisms

• Overvoltage Protection: Automatic firing when voltage exceeds threshold
• Break-Over Diode: String connected between gate and anode functions
• Voltage Threshold: Activates when anode-to-gate voltage surpasses break-over level
• Fail-Safe Design: Multiple protection layers for system reliability
• Field Protection: Safeguards generator field during abnormal conditions

System Integration

• Required Connections: Must interface with EMIO board for proper operation
• Power Source: EXTB board provides 24VDC to de-excitation module
• Control Hierarchy: EXTB board maintains primary control functions
• Backup Capability: Autonomous de-excitation initiation if primary fails
• System Coordination: Works within EX2100 excitation control architecture

Physical Characteristics

• Form Factor: Standard EX2100 series board dimensions
• Mounting: Designed for auxiliary cabinet installation
• Construction: Industrial-grade electronic components
• Connector Type: D-Pin connectors for reliable connections
• Environmental: Designed for power generation environments

Application Information

• Primary Use: Generator excitation system protection
• System Type: EX2100 Innovation Series excitation control
• Installation: Power plant auxiliary control cabinets
• Function: Critical protection during generator shutdown
• Industry: Power generation and distribution systems

Key Features

• Silicon-Controlled Rectifier de-excitation technology
• 24 VDC operation for standard industrial power
• Multiple configurable jumpers for customization
• Fail-safe overvoltage protection mechanism
• Backup de-excitation initiation capability
• Direct interface with EXTB and EMIO boards
• GEH-6632 manual for comprehensive documentation

Safety & Protection Features

• Automatic overvoltage firing protection
• Redundant de-excitation control paths
• Field energy dissipation capability
• Break-over diode string protection
• System fault tolerance design
• Industrial-grade component reliability

Frequently Asked Questions

What is the primary function of this board?
The IS200EDEXG1B serves as a De-Excitation Bridge and Protection Board, controlling and protecting generator fields during shutdown procedures in EX2100 systems.

What happens if the EXTB board fails?
This board can autonomously initiate de-excitation procedures if the primary EXTB control fails, providing critical backup protection for the generator field.

How does the overvoltage protection work?
When the anode-to-gate voltage exceeds the break-over voltage of the diode string, the SCR fires automatically to protect the system from overvoltage conditions.

What documentation covers this board?
Complete technical specifications and installation procedures are documented in the GEH-6632 manual for the EX2100 Innovation Series.

What power supply is required?
The board operates on 24 VDC power, typically supplied through the EXTB board interface in the excitation control system.

Contact Information

• Sales Inquiries: sales@nex-auto.com
• Phone/WhatsApp: +86 153 9242 9628

Partner: AutoNex Controls Limited