Description
⚙️ The GE General Electric IS200EGDMH1A / IS200EGDMH1AGG is an Exciter Ground Detector Module (EGDM) designed for the GE EX2100 Excitation Control System. It monitors insulation resistance between the generator excitation circuit and ground and supports ground-fault detection on both the AC and DC sides of the field circuit. The EGDM is installed in the Exciter Power Backplane (EPBP) rack and uses a double-slot, double-height 6U board format. The board includes power, activity, and master-selection status indicators and can be used in simplex or redundant EX2100 configurations.
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Model | IS200EGDMH1A / IS200EGDMH1AGG |
| Series | EX2100 Excitation Control |
| Product Name | Exciter Ground Detector Module |
| Place of Origin | USA |
| Product Status | New – Open Box |
| Dimensions | Approx. 9 in H × 6 in D; 1.5 in faceplate width |
| Weight | Approx. 0.52 kg |
| Power | +5 VDC, supplied through the control-system backplane |
| Discontinued | Legacy / obsolete EX2100 component |
🔧 Key Features
• EGDM Exciter Ground Detector function
• Designed for GE EX2100 excitation systems
• Measures excitation-field resistance to ground
• Supports AC-side and DC-side ground detection
• Installed in the Exciter Power Backplane rack
• Double-slot, double-height 6U board construction
• Power, activity, and master-selection LED indicators
• Supports simplex and redundant system configurations
• Works with the EX2100 ground-detection circuitry and associated attenuator components
• Suitable for generator excitation-system maintenance and replacement applications
❓ Common Questions & Answers
Q: What is the GE IS200EGDMH1A?
A: It is an Exciter Ground Detector Module used in the GE EX2100 Excitation Control System.
Q: What is the primary function of the EGDM?
A: The EGDM monitors the excitation circuit for insulation resistance to ground and helps identify field-ground faults on both AC and DC portions of the excitation circuit.
Q: Where is the IS200EGDMH1A installed?
A: It is mounted in the Exciter Power Backplane (EPBP) rack as a double-slot, double-height 6U board.
Q: Can the EGDM be used in a redundant system?
A: Yes. Technical references describe simplex operation with one EGDM and redundant configurations using multiple EGDM boards with controller/master assignments.
Q: What do the LEDs indicate?
A: The board includes indicators associated with power, signal/activity, and master-selection status.
Q: What is the relationship between IS200EGDMH1A and IS200EGDMH1AGG?
A: Both designations are associated with the GE EX2100 EGDM ground-detection function. The complete board marking and revision should be matched when selecting a replacement.
Q: What should be checked before replacement?
A: Verify the complete part number, revision code, EPBP rack configuration, system topology, associated ground-detection components, connectors, and wiring before installation.
⭐ Recommended GE Models
- GE IS200EGDMH1A — Exciter Ground Detector Module
- GE IS200EGDMH1AGG — EX2100 Ground Detection Module
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- GE IS200ESELH2A — Exciter Selector Board
- GE IS200EXAMG1A — Exciter Attenuator Module
- GE IS200EDCFG1A — EX2100 DC Feedback Board
- GE IS200EDEXG1A — Exciter De-Excitation Board
- GE IS200EHFCH1A — Exciter Fan Control Board
