Power and renewables

Medium voltage ring main unit testing

mv ring main unit testing

DNV GL provides world-renowned testing and certification of MV ring main units according to international standards such as IEC 62271-200 and IEEE C37.74

DNV GL’s world-renowned testing and certification services provide independent proof that your ring main units meet all the necessary requirements, opening doors to let you export products across the globe.

We test and certify complete medium voltage ring main units and their individual components against recognised international standards such as IEC 62271-200. Our efficient test methodology helps to reduce testing costs, while our facilities in the Netherlands, USA and Czech Republic accurately simulate the operating and fault conditions equipment faces in the field including high short circuit powers. In addition, we can act as an independent witness for on-site tests.

Range of tests

  • Short circuit tests
  • Dielectric tests
  • Temperature rise tests
  • Mechanical tests
  • Internal arc tests

Tests can be performed at 50 or 60 Hz.

Internationally recognised certification Depending on the range of tests chosen, a successful unit or component will receive a KEMA Type Test Certificate. This internationally accepted Certificate is evidence that your product meets all the requirements of the defined standard or specification. The range of KEMA Type Test Certificates for medium voltage ring main units and components includes:

  • KEMA Type Test Certificate of Complete Type Tests
  • KEMA Type Test Certificate of Short-Circuit Performance
  • KEMA Type Test Certificate of Dielectric Performance
  • KEMA Type Test Certificate of Temperature-rise Performance

Alternatively, you can choose to receive a Report of Performance or an Inspection Report. These reports describe the tests conducted, but do not provide evidence that a product meets a certain standard or specification.

Contact us:

Bas Verhoeven

Bas Verhoeven

Director High Voltage Laboratory, Global Quality & Innovation, KEMA Laboratories

Phone: + 31 26 356 3581

Related services you might find interesting: