Short circuit protection of motor starters-IEC Type 2 coordination

Author

Alwin, Paul E.

Author_Institution

Allen-Bradley Co., Milwaukee, WI, USA

fYear

1993

fDate

27-28 April 1993

Firstpage

63

Lastpage

73

Abstract

The International Electrotechnical Commission (IEC) 947-4-1 standard requirements for claiming compliance with Type 2 coordination are explained. The history of Type 2 coordination and its benefits are discussed. Various methods of achieving Type 2 coordination and an extensive test program for both NEMA and IEC motor starters are discussed. For simplicity, the focus is on Type 2 coordination as it relates to fuses and magnetic starters installed in any typical industrial control panel, which may include a fusible disconnect switch, motor starters, control relays, push buttons, etc.<>

Keywords

electric motors; machine protection; short-circuit currents; starting; IEC 947-4-1; IEC Type 2 coordination; International Electrotechnical Commission; NEMA; control relays; fuses; fusible disconnect switch; industrial control panel; magnetic starters; motor starters; push buttons; test program; Circuit breakers; Code standards; Contactors; Fuses; IEC standards; Manufacturing; Protection; Relays; Switches; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering Problems in the Rubber and Plastics Industries, 1993., IEEE Conference Record of 1993 Forth-Fifth Annual Conference of

Conference_Location

Akron, OH, USA

Print_ISBN

0-7803-0897-2

Type

conf

DOI

10.1109/RAPCON.1993.255311

Filename

255311