Partial discharge meters
Instruments to detect and localize the partial discharges.
Doble DFA300 (RFI + acoustic)
DFA300 (RFI + acoustic)
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DFA 300 – Partial Discharge Surveyor and it combines radio frequency interference (RFI) and acoustic emission (AE). Perfect tool to identify and locate insulation defects.
- Safe and effective method for PD detection
- Instrument uses both RFI and acoustic technology
- Registers RFI from apparatus with insulation problems including PD and arcing
- Locate and diagnose internal problems using the acoustic sensor on grounded surfaces

Technical specifications:
Acoustic emission channel:
- Inputs: 1 channel
- Connector: BNC
- Input Impedance: 50Ω or 22kΩ, software switchable (low noise preamp: 22kΩ only)
- AE Operating: Frequency 10 kHz to 500 kHz at -3dB points
UHF channel:
- Inputs: 1 channel
- Connector: BNC
- Input Impedance: 50Ω
- Bandwidth: 50-1000 MHz with 6 MHz RBW
- Accuracy: ± 100 kHz
- Detection Types: Peak and average detector
- Sweep Processing: Continuous, Average, Max Hold and differential
Power supply:
- External Supply: External DC adapter, 12V @ 2A
- Internal Battery: Li-Ion, high capacity 7.2V, 91 Wh
- Battery Life: >6 hours
- Charging Time: ± 3 hours
Mechanical:
- Instrument: 225 x 310 x 70 mm (WxHxD)
- Weight: 2.4 kg
- Total Weight: 6.0 kg incl. instrument, transport case, manuals, CD and charger
LCD screen:
- Display: TFT, 6.4” Transreflective
- Size (W x H): 132 x100 mm
- Resolution: 640 x 480 pixels, 256 colours
Data storage:
- Internal: NV Flash memory (SD)
- Externa:l USB storage class compliant, USB Flash Drive/Hard Disk Drive
- Data Transfer Measurements can be downloaded to a PC
Environmental:
- Enclosure: IP64 – top covers closed, IP51 – top covers open
- Transport: Case IP67

Standard set: instrument PDS300,  transport case,  antennas,  acoustic sensor, battery charger, neck strap, wireless synchronization adapter, software.

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