DocumentCode
3404442
Title
Calculation of short circuit currents for sizing electrical equipment
Author
Laskowski, T.F. ; Hannett, L.N. ; Kostyniak, T.E. ; Pounds, C.G.
Author_Institution
Power Technol. Inc., Schenectady, NY, USA
fYear
1988
fDate
2-7 Oct. 1988
Firstpage
1460
Abstract
Selection of electrical equipment is influenced by the expected magnitudes of the short-circuit currents to which they will be exposed. The widely used application guides ANSI/IEEE C37.010-1979 and C37.5-1979 for AC high-voltage circuit breakers, as well as the IEC standard used in Europe, recommend procedures for determining circuit-breaker duty. These procedures utilize approximate calculations of fault currents. The authors present a method for more accurately approximating fault currents. Calculation of short-circuit currents by the proposed method and by the ANSI method are compared for an industrial power system.<>
Keywords
circuit breakers; power systems; short-circuit currents; AC high-voltage circuit breakers; ANSI/IEEE standards; IEC standard; circuit-breaker duty; electrical equipment sizing; fault currents; industrial power system; short circuit currents; Circuit breakers; Europe; Fault currents; IEC standards; Industrial power systems; Short circuit currents;
fLanguage
English
Publisher
ieee
Conference_Titel
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location
Pittsburgh, PA, USA
Type
conf
DOI
10.1109/IAS.1988.25250
Filename
25250
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