DocumentCode
3435963
Title
Upgrading bus bracing in low voltage motor control centers
Author
Box, Kenneth L.
Author_Institution
Cooper Ind., Lilburn, GA, USA
fYear
1993
fDate
21-25 June 1993
Firstpage
138
Lastpage
139
Abstract
Low-voltage motor control centers (LVMCCs) built prior to the 1980s may have inadequate bus bracing. Unit substations are being expanded in order to meet the demands of an expanding electrical distribution system. The electrical system requirements in many pulp and paper mills are being enlarged with greater kVA capacity transformers. Consequently, the available RMS symmetrical fault currents are likely to be in excess of the original bus bracing rating for the LVMCC. A reliable and cost-effective means of upgrading bus bracing in LVMCCs is discussed.<>
Keywords
busbars; electric motors; machine control; paper industry; RMS symmetrical fault currents; bus bracing upgrading; electrical distribution system; low voltage motor control centers; paper mills; pulp mills; transformers; Circuit faults; Circuit testing; Fault currents; Low voltage; Magnetic circuits; Maintenance engineering; Motor drives; National electric code; Short circuit currents; Transformers;
fLanguage
English
Publisher
ieee
Conference_Titel
Pulp and Paper Industry Technical Conference, 1993., Conference Record of 1993 Annual
Conference_Location
Hyannis, MA, USA
Print_ISBN
0-7803-1354-2
Type
conf
DOI
10.1109/PAPCON.1993.255799
Filename
255799
Link To Document