Title :
Group installation of motor starters
Author :
Binder, Gregory D.
Author_Institution :
Allen-Bradley Co., Milwaukee, WI, USA
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;
Conference_Titel :
Textile, Fiber and Film Industry Technical Conference, 1994., IEEE 1994 Annual
Conference_Location :
Greenville, SC
Print_ISBN :
0-7803-1802-1
DOI :
10.1109/TEXCON.1994.320730
