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Technical papers
Ferroresonance in Inductive Voltage Transformers Or Power Voltage Transformers: analysis, laboratory tests and solutions
A ferroresonance analysis related to HV Inductive Voltage Transformers (IVT) and power Voltage Transformers or Station Service Transformers (PVT/SST) was addressed to develop models based on EMT formulation, enabling detailed ferroresonance risk analyses in specific HV station conditions and helping in the equipment technical specifications (including anti-ferroresonance remedial provisions). The research relied on a comparison […]
Technical papers
Technical design requirements and test experiences on Composite Hollow Core Insulators regarding pollution performance under AC and DC stress
This paper is a common approach of manufacturers of insulators, electrical equipment, transmission system and test labs to verify the expected behaviour in laboratory and outdoor tests . For the electrical design of composite insulators, different material properties and shed profiles for AC and DC conditions have to be taken into account respectively, considering the […]
Technical papers
Testing experiences on extruded cable systems up to 525kVdc in the first third party worldwide laboratory
The booming of renewable power stations (solar and wind mill mainly), the increase use of Interconnectors and submarine cables, the construction of urban substations in big cities with intense population and the need to avoid the use the overhead lines (right of way and so on), are the main factors leading to the increasing amount […]
Products Expertise
Cables and Accessories
The increasing global demand for electricity in both industrialized and emerging markets is driving demand for cables systems. We carry out type tests to verify the design of LV, MV and HV cables and their accessories. Type testing allows you to prove that your cables and cable accessories meet the highest quality standards to deliver […]
Testing Labs
Remote L@b
KEMA labs is always committed to ensure the maximum support to manufacturers and utilities to achieve the goal of a resilient network by performing the top-quality type testing on T&D equipment according to global standards and customer specifications. In the current “new normal” times, we are committed to offer even more cutting edge services that […]
Testing Labs
Pollution Laboratories
Salt fog stress in beachfront areas, industrial pollution, mist or rain can all cause flashovers on outdoor high- and medium-voltage equipment. Kema Labs pollution test laboratories can perfectly reproduce heavy conditions in accordance with most global standards . Test & Ratings Tests Ratings Pollution test (IEC 60507) Up to 600 kV AC Pollution test (IEC […]