Iriss Sonus PD Pro, Руководство по эксплуатации

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2020 Sonus PD Alert Operating Manual
Capacitive Coupler Sensor
ThebuiltinCapacitiveCouplersensordetectsTEVsastheypassoverthepanelsofthehighvoltageequipment.Theveryfast
transient signals are detected by the PD Detector and their magnitude measured and displayed.
Specification
FrequencyResponse 3MHz–400MHz
TEV detection range 0 – 80dB
Refertodedicatedspecificationdocumentforfullinformation
Acoustic Emission (AE)
Acoustic Emission is ultrasonic sound energy that is emitted by discharges on electrical insulating surfaces often caused by Surface
Tracking or Corona.
Surface Tracking
Surface Tracking is the formation of a permanent conducting path across an insulator surface. Usually the conduction path results
from degradation of the insulation. Tracking most readily occurs when the insulation is a carbon-based compound.
Ahighvoltageplantisoftenverydifficulttoclean,sodirtandcontaminantscanbuildupovertime.Inthepresenceofmoisture,
these contaminating layers give rise to leakage current over the insulator surface. This heats the surface and through evaporation
causesinterruptioninthemoisturefilm.Largepotentialdifferencesaregeneratedoverthegapsinthemoisturefilmandsmall
sparks can bridge the gaps. Heat from the sparks causes carbonisation of the insulation and leads to the formation of permanent
carbontracksonthesurface.Undersuchconditionsthisprocesswilldevelopovertimeandeventuallyleadtoflashoverandfull
breakdown of the insulation.
Acoustic Sensor
The ultrasonic acoustic Sensor is designed for use on air insulated terminations where there is a clear sound path between the
electrically stressed insulation and the probe. The sensor is extremely sensitive when pointed directly at the
discharge source.
The transducer is embedded into the rubber moulded cover at the front of the instrument so it can be easily directed towards the
parts of electrical plant where tracking may occur.
Specification
Frequencyresponse 40KHz±1KHz
Detectionrange -6dBμVto70dBμV
Refertodedicatedspecificationdocumentforfullinformation