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Case history: electronically controlled fault current limiters allow inplant switchgear to be interconnected

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1 Author(s)
Fransen, P. ; Fransen Eng. Ltd., Richmond, BC, Canada

The growth of industrial plant power systems, through either system interconnection or paralleling of generation, results in the increase of available short-circuit fault current, which can exceed the interrupting capacity of existing plant switchgear. Complete replacement of the switchgear may not be economical. As an alternative, a short-circuit current-limiting device can reduce the magnitude of fault current to an acceptable level. This paper reviews an actual installation of three three-phase electronically controlled fault current limiters (FCLs) in a pulp and paper mill. The FCLs allow three 12.5 kV 500 MVA switchboards to be interconnected with two 12.5 kV 750 MVA switchboards

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Industry Applications, IEEE Transactions on  (Volume:33 ,  Issue: 2 )