HIGHVOLT Prüftechnik Dresden GmbH

New trends for on-site testing of cables

Date: 01.07.2020

Time: 5 pm CET - 11 am EST - 11 pm SGT

Resonant testing of HV cables became the preferred technical solution during the last decades. 20 years ago the usual cable length was 2 km, whereas today we face lengths up to 50 km and more, with increasing tendency. To cope with this development, the test circuit must be build up with more or bigger test systems. Besides discussing the practical implications of this development, we also like to focus on the influence of test parameters like frequency on the testable cable length as well as the interaction with the cable design, e.g. the sheet currents during testing.

Klaus Vaterrodt
Head of Centre of Competence OSB 


In order to develop a good testing strategy, one must try to understand the breakdown processes. Only then you can efficiently test cable systems. The product standards provide important information on testing after installation.


Klaus Vaterrodt studied electrical engineering with a focus on high-voltage technology at the Technical University of Berlin. He then worked as a development engineer for power cables at BICC KWO Kabel Gmbh. He has been with IPH since 1999, working in various areas. He is currently a Senior Engineer in the on-site testing team. He works in the German standardization committees for power cables (UK411.1) and high-voltage testing and measurement technology (K124) and is a member of CIGRE.

Toon Chuang Foo
Aspectus Engineering Services Pte Ltd


As the benefits of onsite HVAC test in accordance to IEC and Cigre recommendation for HV and EHV cables are getting recognition over alternative methods (VLF and Oscillating wave) of testing HV and EHV cables, the challenge is to set up high powered test systems in compact multi-storey substations. The challenge would be greater with more underground transmission substations are being considered in the future.


Mr. Foo Toon Chuang is a registered Profession Engineer with the Singapore’s Professional Engineers Board for more than 15 years and he has been actively been involved in On-site High Voltage test on GIS, Transformer, and especially HV and EHV Cables for more than 10 years.

Peter Coors
Supervisor, System Engineer for Hardware and Software
HIGHVOLT Prüftechnik Dresden GmbH


The commissioning test of extruded cable systems with AC voltage near power frequency best reflects the later stress during operation. Combined with sensitive partial discharge measurements, especially at the accessories, it can reveal weak points in the insulation and thus help to avoid expensive failures in later operation.


Peter Coors has studied Electrical Engineering and obtained the engineering degree from the Dresden University of Technology in 1986. Since then he has been with HIGHVOLT Prüftechnik Dresden GmbH (formerly TuR) as a specialist for the development of electronic control equipment and embedded software engineering. He has been in charge of frequency-tuned resonant test systems for field testing of cable systems and GIS for over than 20 years. He is a member of the IEEE Power & Energy Society, where he is involved in various working groups for field testing of cable systems.

Moderation: Florian Schwarz




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01139 Dresden
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