Publication detail

Analysis of temperature on the rotary breaking system of a molded case circuit breaker at nominal current and overload

DOSTÁL, L.

Original Title

Analysis of temperature on the rotary breaking system of a molded case circuit breaker at nominal current and overload

Type

conference paper

Language

English

Original Abstract

The paper deals with an analysis of temperature of the rotary breaking system of a molded case circuit breaker (MCCB). The MCCB has a modern concept of the breaking mechanism which uses rotary breaking system. The first part of the paper focuses on the calculation of the thermal losses of the electrical current path at nominal current of 125 A, and the contact force of 9 N. Results of laboratory measurements performed for verification of the numerical calculations are included too. The second part of the paper deals with calculation of the thermal losses of the current path during overcurrent (6 - 10 x In).

Keywords

drop voltage, MCCB, overcurrent, temperature rise, thermal losses

Authors

DOSTÁL, L.

RIV year

2013

Released

2. 9. 2013

Publisher

Department of Power Electrical and Electronic Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology and OEZ Letohrad

Location

Brno

ISBN

978-80-214-4753-0

Book

XXTH SYMPOSIUM ON PHYSICS OF SWITCHING ARC Invited Lectures and Contributed Papers

Edition

1

Edition number

1

Pages from

122

Pages to

125

Pages count

4

BibTex

@inproceedings{BUT100698,
  author="Lukáš {Dostál}",
  title="Analysis of temperature on the rotary breaking system of a molded case circuit breaker at nominal current and overload",
  booktitle="XXTH SYMPOSIUM ON PHYSICS OF SWITCHING ARC Invited Lectures and Contributed Papers",
  year="2013",
  series="1",
  number="1",
  pages="122--125",
  publisher="Department of Power Electrical and Electronic Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology and OEZ Letohrad",
  address="Brno",
  isbn="978-80-214-4753-0"
}