Pregled bibliografske jedinice broj: 1061726
Safety Improvements in Testing Procedures for High and Medium Voltage Circuit Breakers with Both Sides Grounded
Safety Improvements in Testing Procedures for High and Medium Voltage Circuit Breakers with Both Sides Grounded // The 11th Annual Euro TechCon® 2013 Conference and Expo
Glasgow, Ujedinjeno Kraljevstvo, 2013. str. 1-5 (predavanje, recenziran, sažetak, ostalo)
CROSBI ID: 1061726 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Safety Improvements in Testing Procedures for
High and Medium Voltage Circuit Breakers with
Both Sides Grounded
Autori
Secic, Adnan ; Hadzimejlic, Nijaz ; Brorsson, Mäns
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo
Skup
The 11th Annual Euro TechCon® 2013 Conference and Expo
Mjesto i datum
Glasgow, Ujedinjeno Kraljevstvo, 2013
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Recenziran
Ključne riječi
HV Circuit Breaker testing ; diagnostic ; maintenance ; safety ; both sides grounded
Sažetak
Testing circuit breaker main contacts is an important phase in production, commissioning and maintenance. During the test a simultaneous timing measurements on the circuit breaker main contacts are performed to determine displacements of the CB moving parts. These measurements can also provide information on synchronization between the circuit breaker poles. Time differences between phases with a common operating mechanism could indicate internal faults on the main contacts on a particular phase. On the other hand, increased static resistance causes heating of circuit breaker contacts during operation, which can lead to melting of the main contacts, or in the worst case, explosion of the breaker chamber. Also, Dynamic Resistance Measurement (DRM), although not described in standards, is one of the relatively new methods for testing the SF6 circuit breaker with separated main and arcing contacts. There are many regulations and laws that require all objects to be grounded before any maintenance work is performed on the object. Testing a high voltage circuit breaker that is not grounded on both sides can be hazardous due to the high electric potential. The paper presents the principles of performing timing tests, static and dynamic resistance measurements on the circuit breakers with both sides grounded. This paper discusses specifics of testing circuit breakers in this way and presents the results in comparison with the results obtained on the circuit breaker that is not grounded on both sides.
Izvorni jezik
Engleski
