NDLI: Weibull Analysis of Switching Contact Resistance in Laboratory and Commercial Circuit Breakers

Content Provider	IEEE Xplore Digital Library
Author	Leung, C.H. Streicher, E. Fitzgerald, D.
Copyright Year	2007
Description	Author affiliation: AMI DODUCO, Export (Leung, C.H.; Streicher, E.; Fitzgerald, D.)
Abstract	Silver/tungsten powder metal electric contacts are used in circuit breakers because of their combination of high conductivity from silver, and high melting temperature from tungsten. In operations of the circuit breaker, switching arcs erode and oxidize the contact surface to create a high resistance layer that can lead to high temperature at the contacts. This arc erosion product is usually a mixture of silver, tungsten, tungsten oxides and silver tungstate. The formation of this layer and its distribution is modified by the metallurgy and electrical parameters. The measurement of the contact resistance depends on the random location of the contact spot and is therefore highly statistical in nature. Weibull distribution is used to analyze switching contact resistance in laboratory switch apparatus and commercial 20A circuit breakers. This is to understand the statistical nature of the measurement and the correlation to the dynamic contact erosion process.
Starting Page	56
Ending Page	62
File Size	7099950
Page Count	7
File Format	PDF
ISBN	1424408377
DOI	10.1109/HOLM.2007.4318195
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switching circuits Contact resistance Laboratories Circuit breakers Silver Tungsten Temperature Surface resistance Electrical resistance measurement Switches UL489 circuit breaker temperature rise contact resistance silver tungsten
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The effects of nickel on the switching performance of silver-tungsten-based contacts

The Effects of Electrical Conductivity and Oxidation Resistance on Temperature Rise of Circuit-Breaker Contact Materials

Silver tungsten carbide contacts fork circuit breaker applications

Contact resistance variations of tungsten contacts operated in air and silver-tungsten carbide contacts operated in vacuum

New sensing techniques used in Circuit Breaker diagnosis

Development of a 500kV Airblast HVDC Circuit Breaker

Intelligent, compact and robust semiconductor circuit breaker based on silicon carbide devices

Effect of polymeric gassing walls during arcing on AgW/AgC contact resistance

Measuring molded case circuit breaker resistance

Weibull Analysis of Switching Contact Resistance in Laboratory and Commercial Circuit Breakers

Similar Documents

The effects of nickel on the switching performance of silver-tungsten-based contacts

The Effects of Electrical Conductivity and Oxidation Resistance on Temperature Rise of Circuit-Breaker Contact Materials

Silver tungsten carbide contacts fork circuit breaker applications

Contact resistance variations of tungsten contacts operated in air and silver-tungsten carbide contacts operated in vacuum

New sensing techniques used in Circuit Breaker diagnosis

Development of a 500kV Airblast HVDC Circuit Breaker

Intelligent, compact and robust semiconductor circuit breaker based on silicon carbide devices

Effect of polymeric gassing walls during arcing on AgW/AgC contact resistance

Measuring molded case circuit breaker resistance

Weibull Analysis of Switching Contact Resistance in Laboratory and Commercial Circuit Breakers