Versatility of TEV and Ultrasound Detection in One Unit

Versatility of TEV and Ultrasound Detection in One Unit

With the ability of the unit to detect either TEV (Transient Earth Voltage) or AE (Airborne Emission), the Sonus PD is ideal for use in facilities with higher voltages. The TEV feature is an effective tool for detection of defects and micro voids in insulation that yield partial discharge while the AE feature allows for the detection of Corona, Treeing (Tracking), Arcing and Loose Connections in electrical gear.

Built-In Bluetooth Functionality

The SONUS PD is unique in PD detection by using a built-in Bluetooth module which allows the SONUS PD to connect with an Android smartphone running the SONUS PD App. The SONUS PD will automatically connect to a smartphone once it receives a Bluetooth connection request. The user may then take and store readings in real time. For clients with concerns about security of blue-tooth connections, a version of the SONUS PD is available without blue-tooth connectivity.


Compatible With All IRISS PDS and VPDS Ports

Perform ultrasound electrical inspections with more accuracy than scanning a seam of a cabinet by having direct access into the cabinet interior. PDS and VPDS ports allow the Sonus PD to safely scan from the outside of the cabinet and not lose any of the signal due to diffraction.

Sonus PD App

The SONUS PD App unlocks additional functions with the SONUS PD Instrument. Once the unit and App have been paired, the SONUS PD will display a Bluetooth Symbol and all readings and monitoring functionality will transfer to the SONUS PD App on your smartphone. With the SONUS PD App, all data collected can also be transferred to a customer specific secure cloud database for further analysis and histogram trending.Click Here to download the app now!

Built-in Speaker

The built-in speaker allows the user to use SONUS PD without the headphone in quieter areas of the plant, making for a more comfortable day of testing.


Part NumberSonus PD
General Specifications
Overall Dimensions175 x 89 x 46mm (6.89 x 3.50 x 1.81in)
Weight300g (0.66lb)
IP/ NEMA Environment RatingIP54 / NEMA 1
Body MaterialInjection molded plastic case
DisplayOLED display with 6 display LEDs (PD level)
Connectors and interfacesPower, Headphones and External Acoustic Sensor
ControlMembrane keypad
Operating Temperature5°C (41°F) to 55°C (131°F)
Humidity0 to 90% RH non-condensing
TEV Specifications
Measurement Range0 to 80 dBmV
Resolution and Accuracy1 dB, +/- 1 dB
Noise RejectionYes
Ultrasonic Specifications
Measurement Range-6dBµV to + 70dBµV
Resolution and Accuracy1 dB, +/- 1 dB
Transducer Sensitivity-65dB (0dB = 1volt/µbar RMS SPL)
Transducer Center Frequency40 kHz
Internal BatteryLithium Ion, 3.75V, 2.2Ah
Operating TimeApprox. 8 hours
Battery Charger
Rated Voltage90 to 264 V AC, 5V, 2.6A
Frequency47 to 63Hz
Country AdaptersUK, EU, Australia, USA
Charge Time2 hours
Phone and Web Application
CommunicationBluetooth & Customer Server
Data AccessWeb front end
ResultsdB, PRPD, Noise
Safety and EMCCE-compliant in accordance with Low Voltage Directive (2014/35/EU) EMC Directive (2014/30/EU)
Warranty12 Month Limited Warranty

Specifications are subject to change without notice. For the most up-to-date specs, go to

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