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HVPD Longshot
Key Features:

Suitable for both in-service and factory/laboratory PD testing.

For all types of MV, HV and EHV assets including cables, switchgear, transformers and rotating machines.

Voltage range from 3.3 kV to 750 kV.

Short-term OLPD monitoring of up to 48 hours.

Synchronous, wideband (0–200 MHz), 4-channel data acquisition.

Intelligent event recognition differentiates between noise and RF interference from PD activity.

Data acquisition using the PDGold© v8 software and EventRecogniser© module.

Diagnostics and report generation with the PDReader© v8 software. PD site location on long cables with On-line Cable Mapping*.

*PDMap© v8 expansion software module and HVPD Portable Transponder System required.


Detects the early stages of insulation deterioration, providing an early warning against HV insulation faults.

Helps to avoid unplanned outages.

Typical diagnostic OLPD spot-test time of 10 minutes per asset.

Supplied with HVPD's 12-month data analysis (50x free files) and reporting service package.

Provided with tailored training to meet customers requirements.

Available with a wide range of PD sensors for multi-application testing and voltage levels.

Diagnostic OLPD Spot Testing:

Compatible Sensors


Rogowski Coil
Bushing Tap

The PDGold© software from HVPD provides

high definition PD signal acquisition.

It is designed specifically for the HVPD

Longshot™ PD Diagnostic System which can

acquire large amounts of data with more

precision than other test units.

The PDGold© v8 software captures several

power cycles of data in a loop, extracting and

saving the relevant PD events which can be

later analysed in the PDReader© v8 data

analysis and report generation software.


The PDReader© software uses an integrated

PD EventRecogniser© module to scan the

power cycle duration traces and extract short

duration, high frequency pulses are the

classified as Cable PD, Local Equipment PD,

and Noise, using knowledge-rule based


The data analysis is straightforward and can

be performed on any Microsoft® Windows®

based workstation or laptop.

The software allows the user to generate full

and summary reports in a flash with a single


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