Distinguishing motor starts from short circuits through phase-angle measurements
| Autor: | A.L. Brautigain, M.R. Yenchek, J.S. Peterson, J.C. Cawley |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Engineering
Time delays business.industry Phase angle Electrical engineering Coal mining Industrial and Manufacturing Engineering law.invention Ignition system Electric power system Control and Systems Engineering law Waveform Electrical and Electronic Engineering business Short circuit Induction motor |
| Zdroj: | IEEE Transactions on Industry Applications. 38:195-202 |
| ISSN: | 0093-9994 |
| DOI: | 10.1109/28.980376 |
| Popis: | The National Institute for Occupational Safety and Health investigated how the starting of induction motors may cause nuisance tripping of short-circuit protection on coal mine power systems. This research had a dual purpose: (1) to identify how motor-start waveforms differ from those for short circuits and (2) to devise a method to provide short-circuit protection without intentional time delays to account for motor starts. This technology will help ensure that surface temperatures of energized electrical apparatus will not exceed gas or dust ignition thresholds when short circuits occur. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|