Title :
Short circuit protection of motor starters-IEC Type 2 coordination
Author_Institution :
Allen-Bradley Co., Milwaukee, WI, USA
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;
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
DOI :
10.1109/RAPCON.1993.255311
