Sonus PD


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The SONUS PD is specifically designed for Partial Discharge (PD) and Airborne Emission (AE) detection on Medium and High Voltage Switchgear. The unit detects Transient Earth Voltage (TEV) signals generated by internal partial discharge as well as ultrasound acoustic discharge generated by surface tracking, arcing or corona. PD detection can be utilized to detect early warning signs of equipment insulation failure. Inspections can be performed quickly and safely by maintenance personnel with minimal training. Fast and accurate diagnosis of problems using the SONUS PD will help you prevent unexpected outages.

TEV Measurements
Sensor Capacitive
Measurement Range 0 to 80 dBmV
Resolution 1 dB
Accuracy ±1 dB
Noise Rejection Yes
Ultrasonic Measurements
Measurement Range -6dBµV to + 70dBµV
Resolution 1 dB
Accuracy ±1 dB
Transducer Sensitivity -65dB (0dB = 1volt/µbar RMS SPL)
Transducer Centre Frequency 40 kHz
Communication Bluetooth & Customer Server
Data Access Web front end
Capability Android
Reporting Yes
Results dB, PRPD, Noise
Enclosure Injection moulded plastic case
Display OLED display with 6 display LEDs (PD level)
Control Membrane keypad
Connectors Power, Headphones and External Acoustic Sensor
Operating Environment
Operating Temp 5°C to 55°C
Humidity 0 to 90% RH non-condensing
IP Rating 54
Unit Dimensions
Size 175 x 89 x 46 cm
Weight 300g
Internal Battery Lithium Ion, 3.75V, 2.2Ah
Operating Time Approx. 8 hours
Battery Charger
Rated Voltage 90 to 264 V AC, 5V, 2.6A
Frequency 47 to 63Hz
Country Adapters UK, EU, Australia, USA
Charge Time 2 hours
Safety and EMC CE-compliant in accordance with Low Voltage Directive (2014/35/EU); EMC Directive (2014/30/EU)
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