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DMS PDMG-RH GIS Partial Discharge Monitor

Brand: Qualitrol Company

Utilizing advanced UHF technology, the PDMG-RH system, a member of the highly successful PDMG-R family, is designed for GIS installations.

It collects PD data from UHF sensors (couplers) installed on the GIS and transmits the information to software for automatic interpretation and analysis by Expert Software, allowing incipient faults to be avoided and the condition of the long term health of the insulation system to be simply and effectively monitored over the life of the GIS.
Features
  • Automatic PD fault classification
  • High resolution
  • Selectable UHF filters and gain on a per coupler basis
  • Enhanced noise gating features for elimination of interference
  • Enhances system reliability and reduces risks
  • Detects faults in real-time before failure, damage or loss of supply
  • Increases safety for personnel
  • Determines condition of GIS insulation
  • Implementation of efficient, condition-based maintenance strategies
  • Extends residual life of aging plant and defers capital costs
  • Reduces insurance premiums
  • Retrofits to most major GIS systems

Specifications

Additional MMI Interface

  • GPS/Backup System

Alarm Status Notification

  • IEC 61850 (Email, SMS-Text Message)

Ambient Operating Temperature

  • -25° to 55° C (-13° to 131° F)

Compliance

  • EMC Compliance: Tested to Industrial Generic Immunity & Industrial Emission Standards at Enhanced Levels

Dynamic Range

  • -75 to -30 dBm (Logarithmic)

Gating Antenna

  • 100 to 3,000 MHz

GIS HV Testing

  • Ability to Monitor & Record PD During Testing

HTML Based WEB Pages

  • Alarms, System Status, Data Summary

Humidity

  • 100 % Condensing

Input

  • Equipment Cabinet: 2,000-Channels, Max.
  • OCU: 7 UHF Channels (2 x 3 UHF Coupler Inputs + 1 External Antenna)

Interference Filtering

  • Bandpass Filtering
  • Coincidence
  • Gating
  • Software Filtering

Local MMI Interface

  • Central Control Computer, 19” Monitor

Maximum Monitoring Locations

  • 256 Sites

Mounting

  • UHF Sensor: Internal or External

Operating System

  • Windows® 7

Output

  • Three SCADA/SCS Alarms Contacts: PD Warning, PD Alarm, System Fault, Ethernet (IEC 61850) or Modem Communications, 8 x LED Status Indicators

PD Warning / Alarm

  • Event or PD Trend

Power Supply

  • 110 V, 50/60 Hz

Supply Current

  • 200 mA

System Alarm

  • System Fault

UHF Bandwidth

  • 100 to 2,000 MHz
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