Welcome Duplicate 2

Customer Portal

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  • Use your personal TESSA® Fleet Monitoring
  • Get documentation and firmware updates by using "My Devices"
  • Submit your ideas for further functionalities
  • Get an overview of our digital product portfolio
  • Use Cable Fault Location
  • HV Test System Service

Tabs Startpage

My Devices
My Devices

Register your devices, download re­la­ted documents and firmware updates (> 2003).

tessa fleetmonitoring
TESSA® Fleet Monitoring

Online supervision for the transformer fleet by connection to field-devices.


Assessment of your asset fleet based on manual measurements and analysis.

Health Index
TESSA® Health-Index

Assessment of your asset fleet based on offline and online data.

Release Notes
Release Notes

Description of firmware updates for devices and our web applications.

Cable Fault Location

Get to know where the issue is: in the moment when a failure happens.

HV Test System Service

Utilizing the HIGHVOLT Service to op­ti­mi­ze the availability of your test systems.