Title :
Design, specification, purchase, and installation of SF6 power circuit breakers to replace overdutied OCBs
Author :
Smith, G. ; Letourneau, D.R. ; Schrader, R.E.
Author_Institution :
Schneider Services Int., Arnold Air Force Base, TN, USA
Abstract :
Electrical utility improvements and plant expansions have the available short-circuit interrupting current up to, and in some cases over and above, the 25000 A, 1500 MVA interrupting rating of some of existing 35 kV oil circuit breakers (OCBs). The authors discuss the process of replacing these OCBs with sulphur hexafluoride (SF6) breakers. They address the entire project from the discovery of the problem through the investigation, analysis, engineering, purchase, and installation phases
Keywords :
circuit breakers; gaseous insulation; sulphur compounds; 1500 MVA; 25000 A; 35 kV; OCB; SF6 power circuit breakers; oil circuit breakers; short-circuit interrupting current; Circuit breakers; Conductors; Electrical equipment industry; Fault currents; Impedance; Petroleum; Reliability engineering; Substations; Sulfur hexafluoride; Transformers;
Conference_Titel :
Petroleum and Chemical Industry Conference, 1988, Record of Conference Papers., Industrial Applications Society 35th Annual
Conference_Location :
Dallas, TX
DOI :
10.1109/PCICON.1988.22417
