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Onsite High Voltage

Onsite HV, headquartered in Switzerland, is an independent manufacturer Seitz Instruments AG founded in 1993 and supplier of advanced onsite hv testing solutions for distribution and transmission power networks. Onsite HV company`s philosophy is based on close monitoring and thorough evaluation of trends and developments in both the public and private infrastructure sector of on- and offshore electric installations.

Onsite HV has been developing and manufacturing advanced high voltage testing, measuring and diagnostic systems, mainly used for electrical grid components and high voltage test laboratories, for over 40 years.In the area of modern energy grid operation, Onsite HV is a reliable brand for valuable products, intelligent solutions and comfortable and easy-to-apply technology to support renewable power supply.

Company`s credentials

Onsite HV has many years of experience
Onsite HV technology
Onsite HV has long lasting active participation
  • Onsite HV has many years of experience in engineering, production and know-how/technology transfer.
  • Onsite HV is the inventor (1999) and world leader in developing and manufacturing of damped AC (DAC) voltage technology solutions.
  • Following in our product development the actual needs of power utilities Onsite HV solutions are made to improve the quality and the reliability of their power network components.
  • Onsite HV multifunctional on-site test and diagnostic DAC technology offers solutions for an appropriate, non-destructive assessment of medium and high-voltage grid components.
  • Onsite HV technology is capable of supporting grid operators as well as asset management in operating their components reliably and sustainably.
  • Onsite HV has long-lasting active participation in international organizations and bodies responsible for the development of regulations, standards and guidelines in the context of electrical power engineering.

Our core products & services

highvoltage welcome nologo
  • Power cable testing, diagnostics and monitoring are an effective way to assess the quality of new and service aged on-shore & off-shore, distribution & transmission cable systems. We offer a range of voltage testing and partial discharge diagnosis systems and solutions applicable for off-line and on-line use.
  • Power transformers condition diagnosis of on load tap changers with dedicated dynamic resistance measurement system as well as transformer windings diagnostics are crucial to support condition based maintenance. We offer most modern and advanced solutions for off-line diagnosis to asses the weakest parts of a power transformer.
  • Coil and winding insulation of electrical machines can be off-line tested and diagnosed with our insulation test measurement systems. Based on damped AC (DAC) technology we offer compact solution for testing and diagnosis of stator bar insulation.
  • Maintenance and calibration services for all our products including system testing, system software upgrades, and security check up’s and spare parts to guarantee full functionality.
  • Engineering, production and know-how/technology transfer of innovative solutions in the field of testing and measurement technology, high voltage technology, power engineering and sensor technology.
  • User training`s to guide equipment operators in the application of our products in the field, expertise’s in the interpretation of diagnostic results are provided in close cooperation with our partner onsite hv solutions ag (onsitehv.com/en/).

On - and off-shore power cable after-laying testing and on-site condition assessment

On-site testing of newly installed MV, HV and Extra HV power components is fundamental for the reliable operation of underground transmission & distribution power systems as well as power components installed on the off-shore wind farms and oil & gas platforms.

Components testing is applied for:

  • Quality control of cable and accessories installation during after-laying testing, the Site Acceptance Testing (SAT)
  • Maintenance testing during operation or in conjunction with repair work after a failure
  • Condition assessment of service aged components for condition-based maintenance (CBM)

On and off shore power cable after laying testing

Facts and figures

Links to publications downloads

Contact

Seitz Instruments AG
Mellingerstrasse 12
5443 Niederrohrdorf
Switzerland

Phone: +41 56 496 74 80
E-mail: info@onsitehv.com
Website: www.onsitehv.com

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