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Mining Publication: Distinguishing Motor Starts from Short Circuits through Phase-Angle Measurements
Keywords: Motors Short circuit protection
Original creation date: January 2002
Authors: MR Yenchek, JC Cawley, AL Brautigam, JS Peterson
Peer Reviewed Journal Article - January 2002
Download PDF Document (0.24 MB)
NIOSHTIC2 Number: 20023073
IEEE Trans Ind Appl, 2002 Jan/Feb 38(1):195-202
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.
Image of publication Distinguishing Motor Starts from Short Circuits through Phase-Angle MeasurementsPeer Reviewed Journal Article - January 2002
Download PDF Document (0.24 MB)
NIOSHTIC2 Number: 20023073
IEEE Trans Ind Appl, 2002 Jan/Feb 38(1):195-202
See Also
Condition-Based Maintenance of Electrical Machines
Early Detection of Insulation Failure in Electric Motors
Experimental Investigation of On-Line Methods for Incipient Fault Detection
Motor Monitoring System for a Continuous Miner
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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