Title :
Types of contact contaminations in telecommunication and control switches
Author :
Neufeld, Christian N. ; Rieder, Werner F. ; Strof, Thomas W.
Author_Institution :
Inst. of Switching Devices & High Voltage Technol., Vienna Univ. of Technol., Austria
Abstract :
Contact reliability of relays, microswitches or auxiliary contacts may be endangered by various types of contact contaminations such as particles, corrosion products, polymers or carbon deposits. Often information about the type of contamination can be gained by easily applicable measurements of current and contact voltage only: contact resistance measurements-after each operation of a routine life test-employing increasing voltage-employing increasing current; and voltage oscillograms across opening contacts.
Keywords :
contact resistance; corrosion; electric resistance measurement; electrical contacts; impurities; life testing; reliability; surface contamination; surface phenomena; switches; carbon deposits; contact contamination; contact reliability; control switches; corrosion products; microswitches; particles; polymers; relays; telecommunication switches; Contamination; Current measurement; Electrical resistance measurement; Gain measurement; Pollution measurement; Relays; Switches; Telecommunication control; Telecommunication switching; Voltage;
Conference_Titel :
Electrical Contacts, 1994. Proceedings of the Fortieth IEEE Holm Conference on Electrical Contacts
Print_ISBN :
0-7803-2133-2
DOI :
10.1109/HOLM.1994.636827
