Publication detail

DEPENDENCY OF THE TEMPERATURE RISE ON A SCREW CONNECTION OF A CIRCUIT BREAKER

DOSTÁL, L. VALENTA, J. MAKKI, Z.

Original Title

DEPENDENCY OF THE TEMPERATURE RISE ON A SCREW CONNECTION OF A CIRCUIT BREAKER

Type

conference paper

Language

English

Original Abstract

The paper deals with an analysis of temperature rise on terminals of a low voltage circuit breaker. The temperature rise is caused by thermal losses on the current path including contact resistances. The contact resistance is less than a compressive force due to higher tightening torque on a terminal and a bus. Thermal losses are computed using finite element method (FEM). The first part of the paper is focused on a dependency of the temperature rise on the screw connection of the circuit breaker. The last part deals with the screw connection and its completion by a nut keeper and influence of the latter on the temperature rise of the circuit breaker. The nut keeper is a plastic box fixing a nut of screw connection on the terminals.

Keywords

ANSYS, circuit breaker, low voltage, screw connection, screw mount, temperature rise, thermal flow

Authors

DOSTÁL, L.; VALENTA, J.; MAKKI, Z.

RIV year

2011

Released

5. 9. 2011

Publisher

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

Location

Brno

ISBN

978-80-214-4293-1

Book

XIXth Symposium on Physics of Switching Arc

Edition

1

Edition number

1

Pages from

161

Pages to

164

Pages count

4

BibTex

@inproceedings{BUT73196,
  author="Lukáš {Dostál} and Jiří {Valenta} and Zbyněk {Makki}",
  title="DEPENDENCY OF THE TEMPERATURE RISE ON A SCREW CONNECTION OF A CIRCUIT BREAKER",
  booktitle="XIXth Symposium on Physics of Switching Arc",
  year="2011",
  series="1",
  number="1",
  pages="161--164",
  publisher="Department of Power Electrical and Electronic Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology and OEZ Letohrad",
  address="Brno",
  isbn="978-80-214-4293-1"
}