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W artykule przedstawiono tematykę związaną z urządzeniami do ograniczania przepięć. Przedstawiono wymagania norm oraz omówiono urządzenia niezbędne do ich testowania. Przeprowadzono symulacje komputerowe działania wybranych testowych generatorów probierczych. Wyznaczono charakterystyczne parametry otrzymywanych udarów. Określono wpływ zmiany poszczególnych parametrów schematu zastępczego generatora,...
The flow of significant current through electric contacts may lead to contact welding. In a.c. circuits this phenomena is not only dependent on properties of contact material (i.e. resistance to welding) but on the phase in which current is switched on. Welding tendency for contact materials made from AgNi, AgCdO and AgSnO2 was evaluated based on selected phase at which make operation took place....
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