Effect of system recovery on the induction motor protection using HBC fuses, following a short-circuit fault

Author

Tourn, D.H. ; Gomez, J.C.

Author_Institution

Power Syst. Protection Inst., Rio Cuarto Nat. Univ., Cordoba, Argentina

Volume

3

fYear

2001

Firstpage

1838

Abstract

Electric system recovery after a deep voltage sag or short interruption produces a particular stress on the HBC (or cl) fuses protecting induction motors. The phenomenon is different from the hot-load pickup due to the large kinetic energy and EMF reductions of the pre-connected motors. After this instant the whole system demands extra energy, which stresses both the motor fuses and motor windings. The maximum value is higher than the direct start specific energy, which can produce the motor overload protection trip or the start of fuse aging process. It is concluded the need of taking into account the re-acceleration effect on the motor protection.

Keywords

electric fuses; induction motor protection; machine testing; machine windings; power system faults; power system protection; power system transients; short-circuit currents; EMF reductions; HBC fuses; deep voltage sag; fuse aging process; induction motor protection; kinetic energy reductions; motor fuses; motor overload protection trip; motor windings; short interruption; short-circuit fault; Aging; Circuit faults; Fuses; Induction motors; Kinetic energy; Power quality; Power system protection; Stress; System recovery; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE

Conference_Location

Chicago, IL, USA

ISSN

0197-2618

Print_ISBN

0-7803-7114-3

Type

conf

DOI

10.1109/IAS.2001.955781

Filename

955781