Arc Flash/Arc Fault Analysis

Arc Flash/Fault Analysis investigate a worker’s potential exposure to arc flash energy, which may be required for the purpose of injury prevention and determination of appropriate levels of personal equipment protection (PPE) ratings. The incident energy and flash protection boundaries are determined based on the following two available standards for arc flash analysis:

  • National Fire Protection Agency (NFPA) 70E-2015
  • IEEE Standard 1584-2002
  • IEEE 1584a-2004
  • IEEE 1584b-2011

The arc flash values automatically determine the bolted short circuit current using the existing single line diagrams short circuit analysis. Calculations of the individual arcing current contributions and arc fault clearing time of all the protective devices involved in the arc fault are provided. In addition, the arc flash analysis will determine the system grounding configuration and other information required to determine the most adequate and conservative hazard analysis results. Also included are the typical boundaries and equipment gaps provided for by the IEEE 1584 and NFPA 70E.

The arc flash reports include the arcing current contributions passing through each protective device, the calculated fault clearing time and the hazard analysis results. Also included are the summary reports for all the faulted buses in the system which, include the flash protection boundaries and the calculated hazard/risk level assessment. The final analysis results are provided in Arc Flash Labels that can be placed on the existing electrical equipment. The labels contain the necessary information to convey the arc flash danger level.

Arc-Flash_oneline_smallNCAR_arc label red_101216NCAR_arc label yellow_101216NCAR_arc label orange_101216NCAR_arc label green_101216