Group installation of motor starters

Author

Binder, Gregory D.

Author_Institution

Allen-Bradley Co., Milwaukee, WI, USA

fYear

1994

fDate

4-5 May 1994

Firstpage

1

Lastpage

5

Abstract

The National Electrical Code requires the protection of each motor circuit by a short circuit protective device, that is, a set of fuses or a circuit breaker. Under certain conditions however, the NEC permits more than one motor or load to be protected by the same short circuit protective device. This is called “group motor installation” or “group fusing”. Group fusing has taken on a new meaning and respectability with the introduction of starters equipped with built-in magnetic trip units. These starters are called IEC manual starters. The application, the advantages, and the limitations of group installation is examined

Keywords

electric fuses; electric motors; installation; machine protection; magnetic devices; short-circuit currents; starting; IEC manual starters; National Electrical Code; built-in magnetic trip units; group fusing; group motor installation; motor circuit protection; motor starters; short circuit protective device; Circuit breakers; Costs; Fuses; History; IEC; National electric code; Protection; Switches; Switching circuits; Textile industry;

fLanguage

English

Publisher

ieee

Conference_Titel

Textile, Fiber and Film Industry Technical Conference, 1994., IEEE 1994 Annual

Conference_Location

Greenville, SC

Print_ISBN

0-7803-1802-1

Type

conf

DOI

10.1109/TEXCON.1994.320730

Filename

320730