Title :
Application of multi-function motor protection relays to variable frequency drive connected motors
Author_Institution :
GE Digital Energy, Apex, NC, USA
fDate :
March 31 2014-April 3 2014
Abstract :
This paper reviews the application of multi-function motor protection relays to motors that are connected by variable frequency drives (VFD). Typical VFD internal motor protection functions are reviewed to understand the required roles of external motor protection relays. Applications discussed include protection requirements when the relay is located on the source side of the VFD and the motor side of the VFD. The impact of using a bypass switch around the VFD on protection requirements is also discussed.
Keywords :
motor drives; motor protection; relay protection; variable speed drives; VFD internal motor protection functions; bypass switch; multifunction motor protection relays; variable frequency drive connected motors; Fuses; Iron; Power quality; Relays; Stator windings; Switches; Variable speed drives;
Conference_Titel :
Protective Relay Engineers, 2014 67th Annual Conference for
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4799-4740-9
DOI :
10.1109/CPRE.2014.6799007
