HV AC generation based on resonant circuits with variable frequency for testing of electrical power equipment on site

The overall booming industry has great need for electrical industry. Hence, electrical power generation, transmis¬sion and distribution have to respond to the continuously grow¬ing demand by e.g. increased transmission capacities or trans¬mission voltages but also by longer transmission networks. Hereby, the more and more demanding requirements for devices of power transmission and distribution have to be fulfilled by the high voltage test equipment as well. Massive and heavy test equipment is available for factory tests, which however cannot be used for on-site tests.