Overview
Manuals
Working Principle
Primary Applications
Features:
- GE Field Ground Detector Card
- Developed as a critical component for the GE Mark IV Speedtronic™ control system
- Used to monitor and detect ground faults in the excitation and power distribution systems of gas and steam turbines
The core function of this module is to monitor field circuits in the generator excitation and power distribution systems in real time, specifically for detecting short circuits to ground or leakage faults. By promptly identifying these electrical anomalies, it effectively prevents severe electrical interference, equipment damage, or downtime due to malfunctions, making it a critical safety component for ensuring the safe operation of turbine generator sets.
Furthermore, the DS3800NGDD1C1B possesses strong industrial environmental adaptability and system integration capabilities. Its modular architecture facilitates rapid installation and online replacement within Mark IV control cabinets, and it boasts excellent electromagnetic interference (EMI) immunity and high-temperature resistance, enabling continuous and stable operation in harsh power plant environments.
The DS3800NGDD1C1B GENERAL ELECTRIC Field Ground Detector Card may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
GENERAL ELECTRIC DS3800NGDD1C1B Field Ground Detector Card info (manual), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
It is physically connected to the generator's excitation circuit, continuously comparing the charge balance between the field circuit and the reference ground potential. When insulation failure in the field circuit leads to ground discharge, the sensing circuit detects a slight current change or voltage deviation, and then converts this analog abnormal signal into a logic alarm signal via onboard operational amplifiers and comparators. This signal is then transmitted via the system bus to the Mark IV central processing unit, triggering an alarm or executing a preset safety interlock procedure.
- Ground Fault Monitoring: Its primary function is to continuously monitor leakage current or accidental grounding in the excitation circuit. This is crucial because ground faults in the excitation system can lead to severe electrical interference and equipment damage.
- System Protection: By detecting faults early, the card enables operators to take corrective action before minor grounding issues escalate into catastrophic system failures.
- Excitation System Integration: It is typically used in GE EX2000 excitation systems to monitor power distribution in the generator excitation circuit.
