Title :
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
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;
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
DOI :
10.1109/EURCON.2009.5167700
