A flow chart methodology for performing low-voltage three-phase motor coordination studies

Author

Padden, Lorraine K. ; Pillai, Prafulla

Author_Institution

Padden Eng. LLC, Katy, TX, USA

fYear

1997

Firstpage

11

Lastpage

23

Abstract

A flow chart methodology is suggested for performing low-voltage overcurrent device coordination studies for new and existing three-phase motor installations. The flow chart provides references to codes and standards, highlights benchmarks for coordination, provides guides to device selection, and notes the overcurrent values of interest. The text elaborates on the use of the National Electrical Code(R) (NEC) for complying with legal requirements, and notes some significant changes in the 1996 NEC. The text also discusses some device selection criteria and expands on the decision points of the flow charts

Keywords

AC motor protection; chemical industry; overcurrent protection; petroleum industry; standards; NEC; National Electrical Code; chemical facilities; codes; device selection; flow chart methodology; legal requirements; low-voltage; motor protection; overcurrent device coordination; petroleum facilities; standards; three-phase motor coordination studies; three-phase motor installations; Conductors; Fault currents; Flowcharts; Information analysis; Law; Legal factors; National electric code; Performance analysis; Protection; Reliability engineering;

fLanguage

English

Publisher

ieee

Conference_Titel

Petroleum and Chemical Industry Conference, 1997. Record of Conference Papers. The Institute of Electrical and Electronics Engineers Incorporated Industry Applications Society 44th Annual

Conference_Location

Banff, Alta.

ISSN

0090-3507

Print_ISBN

0-7803-4217-8

Type

conf

DOI

10.1109/PCICON.1997.648163

Filename

648163