Distinguishing Motor Starts from Short Circuits Through Phase-Angle Measurements

Details

• Personal Author:
  Brautigam AL ; Cawley, James C. ; Peterson, Jeffrey S. ; Yenchek, Michael R.
• Description:
  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. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Electric Injuries Electricity Mining Occupational Health Safety
• Keywords:
  Author Keywords: Longwalls Coal-mining Electrical-equipment Electrical-hazards Electrical-properties Electrical-safety Electronic-circuits Mining Mining-equipment Mining-industry Motor Phase Angle Short Circuit Underground-mining Voltage-regulation

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• Series:
  Mining Publications
• ISBN:
  078036404X
• ISSN:
  0093-9994
• Publisher:
  IEEE
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  195-202
• Volume:
  38
• Issue:
  1
• NIOSHTIC Number:
  nn:20023073
• Citation:
  IEEE Trans Ind Appl 2002 Jan/Feb; 38(1):195-202
• Contact Point Address:
  National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236-0070
• Email:
  mby5@cdc.gov
• Editor(s):
  Bridger B Jr.
• Federal Fiscal Year:
  2002
• Peer Reviewed:
  True
• Source Full Name:
  IEEE Transactions on Industry Applications
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c4e429172bbc47cb8b157ccffc7b1522d441cfdce647ab4b8654248abbdc74bb0cec2ff9124cfdabc0f5844ebd077306264d13787ba0aeaa9108d9105c49c2e9
• Download URL:
  https://stacks.cdc.gov/view/cdc/220605/cdc_220605_DS1.pdf
• File Type:
  [PDF - 157.21 KB ]