Title :
The effect of using minimum and maximum Utility fault contributions on Arc Flash study results - A case study
Author :
Ayoub, Jean Y. ; Valdes, Marcelo
Author_Institution :
Gen. Electr. Co., Ind. Solutions, Hanover, MD, USA
Abstract :
IEEE Guide for the Specification of Scope and Deliverable Requirements for an Arc-Flash Hazard Calculation Study in Accordance with IEEE Std 1584, recommends that alternate scenarios should be modeled considering minimum and maximum values of utility fault current, if actual utility fault current cannot be obtained from the utility company. This paper is a case history that proves the value of using minimum and maximum utility provided fault contribution at an industrial facility served by several 13.2 kV incoming feeders. Equipment in the facility includes a wide range of electric motors; VFD´s and double ended motor control centers. Multiple scenarios were performed to account for the various complex modes of operation, and to present the worst-case arc-flash results.
Keywords :
IEEE standards; arcs (electric); electric motors; hazards; machine control; IEEE standard 1584; arc-flash hazard; deliverable requirements; double ended motor control centers; electric motors; fault current; incoming feeders; industrial facility; utility fault contributions; voltage 13.2 kV; Arc discharges; Circuit breakers; Circuit faults; Electric motors; Motor drives; Relays; Reliability; Arc Flash; Motor Control Center; Utility Fault Contribution;
Conference_Titel :
Electrical Safety Workshop (ESW), 2015 IEEE IAS
Conference_Location :
Louisville, KY
Print_ISBN :
978-1-4799-4783-6
DOI :
10.1109/ESW.2015.7094869
