Rozbor a návrh rekonstrukce rozvaděče HRM 400 V pole č. 2 až 19

Abstract

The subject of the bachelor thesis "Analysis and Design of Reconstruction of Low-voltage Switchgear and Assemblies HRM 400V Field No. 2 - 19" is the identification and analysis of the current protection, the design a new solution of the present equipment low-voltage switchgear with regard to the selectivity protection among current protection of the secondary windings of power transformers, feeder protection of low-voltage switchgear HRM 400V and main protection in the secondary switchgears. There is also drawn up the technical specification, the economic calculation, the balance sheet and the calculation of short-circuit currents which is worked up with the software Sichr version 12.00 for a separate transformer and for parallel transformers. In the supplement is draw a single-line design of HRM 400V switchgear, the view at the low-voltage switchgear, drawings of the main and control circuits. The documentation of the new solution was drawn in the EPLAN Electric P8 version 2.1 and in the AutoCAD LT 2012.