Návrh odpojovače vn

Abstract

The thesis is focused on draft of mv disconnector. In the opening stage is a short theoretical analysis of disconnector, its function, use, division, and draft principles. It is followed up by the draft of insulating distance according to empirical formulae and suggestion of current path in connection with electrodynamic forces. The important part is the calculation of stable temperature rise and construction of heat network. The calculation is patterned on the smallest cross section and short-term temperature rise on contacts in dependence on voltage drop. In the last stage is carried out the calculation of necessary shaft moment. The suggested disconnector I compare with already existing disconnectors made by IVEP company.