Medium voltage (MV) circuit breakers must energise and de-energise circuits under normal operating conditions and during faults such as short circuits and unloaded cables. DNV GL’s world-renowned testing and certification services provide independent proof that your circuit breakers meet all the necessary requirements, opening doors to let you export components across the globe.
DNV GL tests medium voltage circuit breakers – including vacuum and gas insulated (SF6) circuit breakers – against recognised international standards such as IEC 62271-100, IEEE C37.09 and 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 components face 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
- Switching tests
- Dielectric tests
- Temperature rise tests
- Mechanical tests
Tests can be performed at 50 or 60 Hz.
Internationally recognised certification
Depending on the range of tests chosen, a successful circuit breaker will receive a KEMA Type Test Certificate. This internationally accepted Certificate is evidence that your circuit breaker meets all the requirements of the defined standard or specification. The range of KEMA Type Test Certificates for medium voltage circuit breakers includes:
- KEMA Type Test Certificate of Complete Type Tests
- KEMA Type Test Certificate of Short-Circuit Performance
- KEMA Type Test Certificate of Switching 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 component meets a certain standard or specification.