Alarms can be configured to operate either locally with SCADA or remotely using an optional integrated modem. The system incorporates algorithms that distinguish noise from real PD, significantly reducing the likelihood of getting false alarms. The status and PD levels are displayed on a bright OLED display at the front of the unit.


Avoid Power Outages

Early warning about defects that can lead to failure

Cut Your Costs

Designed for large scale roll out across distributed assets, the monitoring system allows for a decrease in man-hours usually associated with inspection rounds.

Prevent Failures

Implement as part of a Condition Based Maintenance program to monitor assets and receive notifications to inspect for possible faults before failure strikes.


Part NumberSonus PD Alert
General Specifications
Overall Dimensions210 x 190 x 65 mm (8.27 x 7.48 x 2.56in)
Weight670g (0.66lb)
IP/ NEMA Environment RatingIP54 / NEMA 1 Standard, IP 68 Optional
Body MaterialRobust ABS case
DisplayOLED display with display level LEDs
ConnectorsPower, SCADA, 3x Ultrasonic, TEV
ControlMembrane keypad
Operating Temperature-20°C (-4°F) to 60°C (140°F)
Humidity≤90% RH non-condensing
Data Acquisition and Analysis
Number of Channels4
Signal Sampling320k Samples/sec, 10 bit
PD AnalysisAutomatic
ReportingWebsite or Standalone
TEV Specifications
Measurement Range0 to 80 dBmV
Resolution and Accuracy1 dB, +/- 1 dB
Noise RejectionYes, with PRPD
Ultrasonic Specifications
Number of Channels3
Measurement Range-6dBμV to + 70dBμV
Resolution and Accuracy1 dB, +/- 1 dB
Transducer Sensitivity-65dB (0dB = 1volt/µbar RMS SPL)
Transducer Center Frequency40 kHz
Rated Voltage100 to 250 VAC
Frequency47 to 63Hz
Internal Back-up BatteryLithium Ion, 3.7V, 6.9Ah, 35.5Wh
Back-up Operating Time8 hours using Default Settings
Safety and EMCCE-compliant in accordance with Low Voltage Directive (2014/35/EU) and 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

Product Documents

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