PD-iGMS-M20A

The PD-iGMS-M20A is a mountable online diagnostic system which periodically monitors partial discharge in GIS (Gas insulated switchgear). PD-iGMS-M20A will detect and analyze UHF signals by UHF Sensor module with built in LNA (Low noise amplifier) and frequency modulator to distinguish between real PD (partial discharge) signals and external noise signals similar to that of partial discharge signals. Also the PD-iGMS-M20A provides software, which is designed to analyze, manage, and interpret measured data and can be set to report daily, weekly or monthly.

Features
  • Connects to your system via SCADA
  • Installed on fully loaded and energized electrical equipment, completely non-intrusive, no need for an outage to install
  • Monitors and analyzes PD signal on-line, real time from GIS
  • Each model can be extended to monitor up to 20 channels

System Configuration
Functions
  • Analysis & Data management Software
  Analysis Function
- Trend analysis
- PD Pattern Analysis
- PRPD/QM/NQN analysis (2D/3D Graph)
Data management
- Event Log (Alarm, fault, etc.)
- DB Backup & Restore
- Alarm message (email, MMS, etc.)
Communication interface
- TCP/IP network (10/100M)
- RS-422 Multi-drop (230Kbps)
OS : Windows XP/Vista
  • Built in embedded controller
  OS : Windows CE 5.0
User interface : Touch Screen
LCD Display : 800*480
Communication

- LAN : TCP/IP network
Function (Mode)
- Measurement mode
- Data view mode
- Wave data mode
  • Enhancement UHF Sensor Module (PD-eUSM)



- Built in effective signal processing technique for eliminate external noise signal similar to original partial discharge signal.
- Excellent frequency response
- Built in internal low noise amplifier(20dB)
  - Antenna type : Resonant antenna
- Frequency range : 200MHz¡­1500MHz
- Internal frequency modulator for external noise cancellation





  Feature of PowerPDTM : PD-eUSM  
 
 

waveform of signal processing

Frequency response of PD-eUSM
 
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