liona
Online PD Spot Tester
Cable testing and diagnostics with BAURliona
liona is a portable online PD spot tester for measuring and locating partial discharges in cables and switchgear during normal mains operation. liona lets you test cable systems and electrical equipment online without switching off partial discharge activities, and then generate trend analyses. All it takes is one PD spot test (duration: 5-10 minutes) to reliably assess the current condition of your system.
- Automatic PD detection during normal mains operation
- With DeCIFer® technology: PD identification based on 500 million measurement results
- Precise online PD mapping with iPD Transponder
- NEW: Online diagnostics with VDS-C
Challenges associated with online diagnostics
liona: Reliable, cost saving, easy to use
NEW: VDS-C VDS PD coupler
The new VDS PD coupler VDS-C offers an additional innovative accessory for the BAUR liona that many network operators have needed for years. This small device makes it possible to measure partial discharge on medium-voltage cables without the need to switch off cable routes.
Up until now, network operators have had two options for testing medium-voltage cables for partial discharge using BAUR equipment: offline measurement or online measurement using HFCT sensors. However, on many cables, attaching and removing the HFCT sensors requires the cables to be briefly taken out of operation. There is no need to any downtime with the VDS PD coupler as the sensors are directly attached.
liona VDS-C: A true innovation!
What previously happened:
What the VDS-C is capable of:
Advantages of online diagnostics with the VDS-C
The main advantage to PD sport testing with the VDS-C is the ability to quickly check cables without the need to disconnect them from the mains. The initial check allows you to check the condition of all cables in no time at all - even for critical cable routes that would be costly to disconnect.
Online diagnostics with BAUR gives you a clear overview of your assets. Learn exactly which cables require precise diagnostics and whether they also need to be repaired or replaced.
There are no nasty surprises with the VDS-C!
Real online diagnostics
Check the condition of your cables without disconnecting the cable route from the network, even if only for a minute.
Save time
Measurements take a matter of minutes for each cable.
Save resources
Plan offline diagnostics and save resources.
More features
Measure partial discharges between the individual phases.
Sustainability
Maximum cable utilisation during its service life.
Preselection
Check and preselect cables: What fits? Where is something required?
Clear results
Reports that do not require specialist knowledge to read
Entry point into cable diagnostics
Fast categorisation of the cable condition
Everything the VDS PD coupler is capable of
PD testing on long cables
Measuring on VDS sockets previously only enabled the identification of partial discharges in the immediate vicinity of the switchgear, as the signals of partial discharges that are further away are suppressed. The new VDS PD coupler also make signals produced by partial discharges at a greater distance permeable. Cables several kilometres long can therefore be checked for partial discharges without having to be de-energised.
Measurement synchronisation
The sync channel allows the measurement to be synchronised to the measured phase, so that the partial discharges can be displayed according to the correct phase. In contrast to measurements taken with HCFT sensors, it is also possible to identify partial discharges between two phases on belted cables.
Spot tests on medium-voltage cables possible at last
Thanks to the easy connection without having to disconnect the cable route, it is possible to check for partial discharges within a matter of minutes. If significant partial discharges are identified, scheduling further diagnostics on the cable is recommended. As the only thing spot testing is unable to do is display the fault location.
To locate the fault, measurement engineers need to use the online measurements of the liona iPD transponder and the HCFT sensors, or the tried-and-tested offline diagnostics. The spot tests with the liona and VDS-C facilitate the scheduling of more sophisticated cable diagnostics. They also enable partial discharge testing on cables that cannot be de-energised for testing, or only as part of a complex and time-consuming process.
Here’s what our customers have to say
Suitable for all requirements
Overview of all liona sets
Check live cables quickly and easily for partial discharge with the portable online PD spot tester liona. Online PD testing helps you identify major vulnerabilities and locate any faults without any downtime.
The liona measuring device covers a wide range of applications to help you find and fix partial discharge in no time at all.
The set
Fast cable preselection followed by decisions on: What fits? Where is something required?
The set consists of:
liona
VDS-C
Advantages
- Online measurement: No need to take cables offline
- Fast preselection: 2-3 cables every minute
- Sustainability: Maximum utilisation of resources
- Measurements also possible on belted cables
liona + VDS-C
The set
Online PD testing and mapping in next to no time.
The set consists of:
liona
HFCT sensors
iPD
Advantages
- Quick and cost-effective PD measurement and mapping
- Automatic evaluation by DeCIFer®
- Section-by-section measurementsat terminations and cross-bonding joints
- Cable length measurement to prepare for PD mapping
HFCT set
Do you already own a liona online measuring device? Not a problem! The new VDS-C VDS PD coupler is compatible with your device. Now, you only need to order the latest device in order to update your liona device to the current version.
Caution: The new VDS PD coupler cannot be used together with the iPD transponder.
Explanatory video
Explanatory video: VDS-C - Innovative online diagnostics (EN subtitles)
Cable diagnostics is crucial in the field of energy supply, but is cost- and time-intensive. The innovative VDS PD coupler from BAUR, part of liona, revolutionises this process. It quickly performs online diagnostics, without having to interrupt the power supply, and provides a quick overview of the condition of medium-voltage cables. This groundbreaking tool not only ensures uninterrupted network operation, but also offers significant cost savings.
Infographics
VDS-C at a glance
The area of application and potential summarised in a clear graphic.
Product information
Literature
Press
November 2023
Spot check for partial discharges in a matter of minutes
Online partial discharge testing without interrupting operation
Distribution network operators use partial discharge testing to determine the condition of their cable routes and to detect hidden faults at an early stage. As this measurement typically requires the route to be switched off (at least for a short time), network operators usually only employ this method on part of their cables.
October 2023
VDS-C enables fast online checks on medium-voltage cables
Identifying partial discharges during operation
With its VDS-C VDS PD coupler, BAUR GmbH (Sulz/Austria) now offers an additional, innovative connection accessory for the liona online partial discharge measuring device – something that has been on the wish list of many distribution network operators for a long while. This is because the VDS-C makes it possible to identify partial discharges on medium-voltage cables or their accessories without having to switch off the cable route.
October 2020
Online partial discharge testing optimised:
Additional areas of application for BAUR’s liona and iPD devices
BAUR GmbH has improved its liona and iPD devices for online partial discharge testing on medium-voltage cables. The devices allow distribution network operators to examine important cables during operation, e.g., for damage to the insulation or defective joints, without the cables having to be de-energised first.
BAUR References
Cable testing and cable diagnostics
MITNETZ STROM
VDS-C enables fast online checks on medium-voltage cables
One of the first operators of the VDS-C is Mitteldeutsche Netzgesellschaft Strom mbH, MITNETZ STROM, which had the use of a prototype of the new liona accessory. MITNETZ STROM operates a distribution network of around 15,000 kilometres of medium-voltage cables, of which more than a third has already been in use for more than 30 years. In order to ensure maximum availability, the network operator carries out approx. 1,000 cable diagnostics and PD commissioning measurements per year.
Customer:
MITNETZ STROM, the largest regional distribution network operator in eastern Germany (with a network covering 74,000 km), is responsible for the planning, operation, and marketing of the power network.
BAUR solution:
With the new liona VDS-C VDS PD coupler, MITNETZ STROM can perform a spot test on routes within a few minutes and only needs to perform an offline measurement on cables if the results are positive.
Data sheet
Product enquiry
Product overview
