Sonus PD Pro

Online PD Detection of HV Assets with Data Synchronization

The Sonus PD Pro 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 PD phenomenon. 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 Pro will help you prevent unexpected outages. Bluetooth connectivity allows the inspector to pair the device to an Android based phone or Tablet, which in turn sends the data to the Cloud Based Software for analysis and reporting. Utilizing the Sonus PD Pro with a Sonus UHF-P sensor or the Sonus HFCT-P clamp will allow the inspector to detect PD in broader range of applications and equipment. The Sonus PD Pro is compatible with all IRISS CAP Series PD and PDS Inspection windows and VPDS Inspection ports. Allowing the Sonus PD Pro to safely scan a singular repeatable test point from the outside of the cabinet and not lose any of the signal due to diffraction.

Advanced Noise Rejection

System detects PD in higher noise environments, reducing the possibility false positives

Quickly & Easily Identify Faults

The Sonus PD Pro has 4 operational ranges with a live Level Screen, and two scatter plots screens displaying a PRPD Live and a PRPD Persist view which instantly show the technician the presence of a fault condition.

Sync & Trend Your Data

Sync data locally to your PC with the included software, or sync remotely to the cloud for access across devices


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Bluetooth Connectivity

The device offers Bluetooth connectivity, enabling inspectors to pair it with an Android-based phone or tablet.

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Cloud-Based Analysis

Data collected during inspections can be seamlessly sent to cloud-based software for analysis and reporting, streamlining the data management process.

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Compatibility and Signal Preservation

The Sonus PD Pro is compatible with various IRISS CAP Series PD and PDS Inspection windows and VPDS Inspection ports. This compatibility allows the Sonus PD Pro to safely scan a repeatable test point from outside the cabinet while preserving signal integrity, without signal loss due to diffraction. This feature enhances the device's effectiveness in a range of applications and equipment.

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User-Friendly Operation

Maintenance personnel with minimal training can quickly and safely perform inspections using the Sonus PD Pro. Its user-friendly design facilitates fast and accurate diagnosis of problems, aiding in the prevention of unexpected outages.


ModelSonus PD Pro
General Specifications
Overall Dimensions190 x 90 x 55 mm (7.48 x 3.54 x 2.17 in)
Weight210 g (0.66 lb)
Environment RatingIP54
EnclosureInjection molded plastic case
DisplayOLED with level LEDs
ConnectorsPower, Headphones and optional sensors
ControlMembrane keypad
Operating Temperature0°C (32°F) to 60°C (140°F)
Humidity0 to 95% RH non-condensing
TEV Specifications
Measurement Range0 to 80 dBmV
Measurement Bandwidth3 to 200MHz (with FM Bandstop)
Resolution1dB (Accuracy ±1dB)
Noise RejectionYes, with PRPD
Ultrasonic Specifications
Measurement Range-6dBµV to + 68dBµV
Resolution1 dB (Accuracy ±1 dB)
Transducer Sensitivity-65dB (0dB = 1volt/µbar RMS SPL)
Transducer Center Frequency40 kHz
HFCT Specifications
Measurement Range0 to 50,000pC
Measurement Bandwidth60kHz to 70MHz
Resolution5pC (Accuracy ±5pC)
UHF Specifications
Measurement Range0dB-75dB
Resolution1dB (Accuracy ±1dB)
Bandwidth200MHz – 2.0GHz
Internal BatteryLithium Ion, 3.75V, 2.2Ah, 8.25Wh
Operating Time5 hours
Battery Charger
Rated Voltage100 to 250 VAC, 5V, 3A
Frequency47 to 63Hz
Country AdaptersUK, EU, Australia, USA
Charge Time3 hours
ComplianceCE-compliant in accordance with EMC Directive (2014/30/EU)
Warranty12 Month Limited Warranty
Phone and Web Application
Data StorageCustomer Server
Data AccessWeb front end, SAP, Oracle, etc.
CapabilityAndroid, iOS
ResultsPD Level, Noise Level, PRPD
Sonus PD Pro Kit Contains
Kit ContainsSonus PD Pro Detector
Kit ContainsHeadphones
Kit ContainsFunction Tester
Kit ContainsMains Charger
Kit ContainsUSB Charger
Kit ContainsHard wearing PELI™ case
Optional Accessories
AccessoriesSonus HFCT-P Sensor
AccessoriesSonus UHF-P Sensor

Product Resources

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