TGA – Partial Discharge Monitoring

Features

Acquisition

• Connect with up to 6 permanently installed Iris Power 80pF Epoxy Mica Capacitors (EMC)
• Operates on machines with either 50Hz or 60Hz power frequency

Data Analysis

• Sophisticated monitoring and analysis system prevents false indications by digitally separating partial discharges from electrical noise, on a pulse-by-pulse basis.
• Proven filtering algorithms enhances noise separation to allowing for a reliable and objective detection of stator winding problems such as  poor impregnation, overheated windings, coil movement in the slot, ineffective or deteriorating grading / semi-conductive material problems, and  contamination.
• In response to a partial discharge alert, users can review the pulse height analysis plots, and the 32-window phase resolved partial discharge plots using basic interpretation to confirm the cause of the alert
• PDView software performs automatic assessment and displays alerts to when high partial discharge conditions are detected.

Options

Data Acquisition

• Low frequency option  for offline testing with one portable 16 kV coupler
• Low frequency option for offline testing with one portable 25 kV coupler
• Optional configuration to measure partial discharges on up to 12 EMC couplers for hydro generators (TGA-BP)
• Optional configuration to measure partial discharges on up to 6 Iris Power Stator Slot Couplers (SSCs) for larger turbo generators (TGA-SB)
• VFD Monitoring Kit which includes a reference circuit and capacitive divider assembly to allow partial discharge monitoring on motors with VFD drives operating between 20 Hz to 120 Hz