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Critical d.c. load current test of low-voltage devices
 Fůsková, Karolína ; Ing. Zdeněk Mlynář (OEZ s.r.o.) (referee) ; Dostál, Lukáš (advisor)
This thesis deals with problems connected with circuit breakers for direct current. It explains mechanism and construction of small circuit breakers and molded case circuit breakers (MCCB) focusing on the using in AC and DC circuits. There is also explained direct current and related issues. For example, issue with DC arc breaking. An important part of this work is high-speed camera measurement of critical direct current and short circuit breaking with subsequent evaluation with PFV tool. The important part of this thesis is assessment of the critical load current for used circuit breakers
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