Iris Power PDA-IV

Monitoramento de descargas parciais

Periodic Online Partial Discharge Monitoring for Hydrogenerators.

The PDA-IV is a portable instrument to monitor PD in hydrogenerators equipped with Iris Power Epoxy Mica Capacitor Couplers.

Features

OPERATING ENVIRONMENT
• Temperature: 5ºC to 40ºC
• Relative humidity: 15% to 90%
DIMENSIONS
• W 41cm D 31cm H 21 cm
• Weight: 10.1 kg
INSTRUMENT CONTROL AND DISPLAY SOFTWARE
• Control Software: PDLiteProTM
• Analysis Software: PDViewTM
• Runs on any computer with Microsoft Windows XP or higher 32 bit operating system
• Computer-instrument communications via USB or Ethernet ports
PULSE ANALYSIS
• Shortest pulse width (FWHM): less than 2.5 ns, at the 3 dB cut-off magnitude
• Magnitude ranges:
– 20-340 mV in 20 mV steps,
– 50-850 mV in 50 mV steps,
– 100-1700 mV in 100 mV steps,
– 200-3400 mV in 200 mV steps
• Lowest magnitude window: 20 mV
• Magnitude windows: 32 per range
• Dual polarity
• 100 phase windows with 3.6º resolution
NOISE CANCELLATION
• Digital comparison of pulse arrival time and/or pulse shape, with magnitude difference up to 50%
• Resolution: 6 ns (corresponds to 2 m between a pair of sensors)
SIGNAL INPUT
• 12 BNC connectors for 80 pF epoxy-mica capacitors (multiplexor incorporated)
• 50 Ω input impedance
POWER FREQUENCY REFERENCE
• 50 Hz or 60 Hz
• Reference taken from input labelled “C1”
• Input range: 100 mV to 20 V
DATA ACQUISITION TIME
• Selectable at either 1 s or 5 s per magnitude window, for each coupler pair
POWER SOURCE
• 120/240 V, 50/60 Hz

Options

PDA amplifier (2 mV – 3400 mV range)
PDA attenuator (20 mV -34000 mV range)
Additional instrument manual
Low frequency option, with one portable 16 kV coupler
Low frequency option, with one portable 25 kV coupler

Applications

he Iris Power PDA-IV instrument can reliably identify loose, contaminated, overheated or poorly impregnated stator windings to aid in assessing the risk of stator winding failure. This portable instrument is easily connected to permanently installed Iris Power 80 pF Epoxy Mica Capacitors (PDA EMCs) to run tests.