| Abstract [eng] |
Stock company „ELGA“ is constantly developing an air insulated medium voltage semi-metalclad type switchgear systems construction, so it happens that we need to do short – time and withstand current tests for new complemented equipment. The Master thesis analyses short – time and withstand current tests laboratory for in company prefab medium voltage semi-metalclad type switchgear systems USN-10, USN-20 designed to be used for 6 ÷ 10, 24 kV voltage, and 50Hz frequency power distribution, connected feeder with over current and overload protection. Various companies' circuit breakers for example „ABB“; „SIEMENS“; „VEI“ etc are installed on extractive element (trolley) in cubicle. Normative standards sustaining how the tests should be made, test laboratory formative elements resistant’s, short – time and withstand current calculation, test scheme and test conditions are presented in the Master thesis. |
