Ecological solutions for power switching apparatus

Author

Nitu, Smaranda ; Pavelescu, Dan ; Anghelita, Paula ; Lungu, Magdalena ; Gavriliu, Stefania

Author_Institution

Univ. Politeh. of Bucharest (U.P.B.), Bucharest, Romania

fYear

2009

fDate

18-23 May 2009

Firstpage

637

Lastpage

642

Abstract

The fight for ecological solutions is lead in every technical field. Until 30 years ago, the challenge in the field of power switching apparatus was the interrupting currents and voltages increasing. Nowadays it is important to maintain the same technical performances but to use ecological constructive solutions. In low and medium voltage (up to 36 kV) the switching in vacuum is an ecological very good solution, but it raises technical and technological difficulties. For the low voltage contactors the replacement of the Ag-CdO contact material with Ag-SnO₂ is the recommended ecological solution. The paper presents some of the authors´ results obtained in the construction of ecological low voltage interrupters and contactors.

Keywords

cadmium compounds; circuit breakers; silver; tin compounds; vacuum contactors; Ag-CdO; Ag-SnO₂; contact material; ecological constructive solution; low voltage contactor; low voltage interrupter; power switching apparatus; Charge carriers; Conducting materials; Contactors; Interrupters; Low voltage; Magnetic fields; Magnetic materials; Medium voltage; Sulfur hexafluoride; Vacuum arcs; Ag-SnO2; switching high currents; vacuum quenching chamber;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON 2009, EUROCON '09. IEEE

Conference_Location

St.-Petersburg

Print_ISBN

978-1-4244-3860-0

Electronic_ISBN

978-1-4244-3861-7

Type

conf

DOI

10.1109/EURCON.2009.5167700

Filename

5167700