GE IS200EGDMH1AFG is an Exciter Ground Detector Module for Mark VIe systems, detecting ground faults in generator exciter circuits via AC signal injection and impedance monitoring, with high sensitivity, isolation, diagnostics, -40°C to +70°C operation, UL/CE compliance, enabling early warnings to prevent severe damage.
GE IS200EGDMH1AFG Exciter Ground Detector Module: Comprehensive Product
Overview
The GE IS200EGDMH1AFG is a high-reliability Exciter Ground Detector Module engineered as a core
protective component of GE’s EX2100 excitation control system, dedicated to monitoring field
leakage resistance between any point in a generator’s AC/DC excitation circuit and ground . Its
primary mission is to detect incipient ground faults—such as insulation degradation in field windings
or faulty wiring—that could otherwise lead to catastrophic equipment damage (e.g., winding
burnout), excitation system trips, or unplanned power outages. Designed with a compact double-slot,
6U form factor, the module mounts seamlessly in the Exciter Power Backplane Rack (EPBP) and
operates in tight synergy with the EXAM (Attenuator Module): the EXAM senses voltage across
ground-sense resistors in high-voltage auxiliary panels and transmits critical signals to the
IS200EGDMH1AFG via a dedicated nine-conductor cable .
For mission-critical applications, the module supports both simplex (1 module) and redundant (3
modules: Controller “C”, Master 1 “M1”, Master 2 “M2”) configurations, with roles assigned via
program pins on the P2 backplane connector to eliminate single points of failure . Communication
with the system’s DSPX controller module occurs over fiber-optic links via the EISB (Exciter Internal
Serial Bus), ensuring low-latency data transmission and immunity to electromagnetic interference
(EMI) from nearby high-voltage excitation components . Key hardware enhancements include a high-
common-mode-rejection-ratio (CMRR) signal conditioner for precise leakage resistance
measurement, an isolated power supply for personnel safety amid high common-mode voltages, and
front-panel LED indicators (power, active status, selected master) for instant visual troubleshooting .
Built to withstand harsh industrial environments, its conformal-coated PCB (compliant with IPC-CC-
830B standards) resists dust, moisture, and chemical contaminants, while its rugged construction
tolerates operating temperatures from -40°C to 70°C . It is widely deployed in power plants, steel
mills, and petrochemical captive power facilities, integrating seamlessly with GE’s Mark VIe DCS for
centralized monitoring and alarm management .
Detailed Specification Table
Category
Details
Core Function
Detects AC/DC field leakage resistance in generator excitation circuits; collaborates with EXAM module to trigger early alarms for ground faults, preventing equipment damage .
Mechanical Specifications
Double-slot, 6U form factor; optimized for mounting in GE Exciter Power Backplane Rack (EPBP); rugged metal housing with conformal-coated PCB .
Electrical Parameters
Input voltage: 24V DC (compatible with GE IS200-series power supplies like IS200VCRCH1A); integrated isolated power source; high-voltage tolerant signal conditioning circuitry .
Environmental Ratings
Operating temperature: -40°C to 70°C; resistant to dust, moisture, and industrial chemicals; EMI-shielded design for high-voltage environments .
Communication & Control
Fiber-optic link to DSPX controller via EISB bus; integrates with EXAM attenuator module (nine-conductor cable); supports Modbus TCP/IP for DCS connectivity .
System Compatibility
GE EX2100 excitation control system; Mark VIe DCS; simplex (1 module) or redundant (3 modules: C/M1/M2) configurations .
Installation & Maintenance
Hot-swappable in redundant setups; P1/P2 backplane connectors; role configuration via P2 program pins; front-panel LEDs for status monitoring (power/active/master) .
Key Applications
Thermal/hydropower generator excitation systems; steel mill motor excitation circuits; petrochemical captive power plants; telecom backup generator systems .
Compliance & Documentation
Aligns with GE industrial control standards (referenced in GEH-6632 EX2100 User’s Guide); CE/UL-certified rugged design .
Our Advantages
1.100% Origin goods
2.In stock
3.1-year warranty
4.Timely delivery (1-3working days)
5.Competitive price.
Great benefits
1. lower your support costs
2. Provide on-going availability of automation replacement parts
3. Large number of inventory
4. Support door-to-door inspection
Service
Q1.Quality Guarantee
we give 1 year guarantee to ensure your business.
Q2.MOQ
1 piece
Q3.Payment terms
T/T
Q4.Currency
USD,RMB,EUR,GBP
Q5.Package
Shipment port: we export from Xiamen
Q6.Customer Service
24 hours by email
FAQs
How does an Exciter Ground Detector Module work?
The module monitors the insulation resistance between the exciter field winding and the ground. It typically uses a high-impedance voltage source to apply a test voltage and measure the resulting current. If the resistance falls below a predetermined threshold, indicating a possible ground fault, the module triggers an alarm or a protective action.
Why is it important to use an Exciter Ground Detector Module?
Using an Exciter Ground Detector Module is crucial for maintaining the reliability and safety of generator excitation systems. Ground faults can cause damage to the generator, reduce efficiency, and pose safety hazards. Detecting these faults early allows for timely maintenance and prevents more severe issues.
How are boards packaged for shipment from Joyoung International Trading Co, Limited.?
Parts are placed in antistatic packets and securely packed in ESD boxes cushioned with ESD Foam designed to safeguard electrical components.
Why choose Joyoung International Trading Co., Ltd?
Joyoung International Trading Co., Ltd also pride ourselves on our service, that as a customer, you will receive time and time again.
