GE IS200EGDMH1ADF Excitation Field Ground‑Detection Module

Technical Specifications

Model: IS200EGDMH1ADF

Brand: GE（GE Vernova）

Product Type: EGDM excitation field ground‑detection module

Matching System: GE Speedtronic Mark VI, EX2100 generator excitation control system

Installation: Double‑slot 6U VME board, installed on EPBP excitation power backplane

Power Supply: 24VDC, max power consumption 8.5W

Detection Function: Continuously monitor ground insulation resistance of rotor AC‑side and DC‑side excitation loop

Communication: HSSL high‑speed fiber optical link connecting to DSPX main control board

Redundancy Configuration: 1 piece for simplex system; 3 pieces for TMR triple‑modular redundant excitation system

Indicator: On‑board LED for module power, running status and ground‑fault alarm

Operating Temperature:‑30℃ ~ +65℃, non‑condensing

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.47kg

Dimension:230mm ×152mm ×38mm

Compatible System: Gas‑steam turbine generator excitation cabinet

Core Function

EGDM excitation field ground‑detection module for EX2100 excitation system. It injects low‑frequency test signal into generator rotor excitation circuit, real‑time measures insulation resistance to ground. When ground leakage occurs on rotor winding, slip‑ring or excitation cable, it triggers ground‑fault alarm and transmits diagnostic data to DSPX controller via HSSL optical fiber. It supports simplex and TMR triple‑modular redundant architecture, performs online non‑interruptive monitoring, effectively prevents generator damage caused by single‑point or multi‑point grounding fault of excitation winding.

Product Details

IS200EGDMH1ADF belongs to EGDM series rotor ground‑detection hardware for GE EX2100 excitation control system.

This double‑slot VME module is plugged into EPBP excitation power backplane. The module applies low‑frequency test signal to excitation field circuit, calculates insulation resistance value accurately without affecting normal excitation adjustment. Fault status and resistance data are transmitted to main controller through HSSL fiber link. On‑board LED indicators directly show power supply, operation status and ground‑fault alarm information for quick on‑site troubleshooting. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to harsh working environment of power‑plant excitation cabinet. Widely applied in gas‑steam turbine generator excitation cabinets for rotor field insulation online monitoring.

It belongs to critical rotor ground‑monitoring spare‑part for EX2100 excitation system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for excitation ground‑fault loop debugging and defective IS200EGDMH1ADF module replacement.