Arc Flash Auto-Evaluation & Coordination

Arc Flash Coordination

Incident Energy Visualization on Time Current Curves (TCC)

When performing protection and coordination studies it is difficult to anticipate potential arc flash coordination issues due to the differences between the arc and bolted fault currents.

ETAP constant energy boundary area (C-area plots) based on the IEEE 1584 2018 model can mitigate the arc flash results at the coordination stage .This graphical representation provides a reference boundary based on user-defined incident energy limit. It allows a protection engineer to consider multiple operating conditions and probabilistic variations in the way an arc-flash could occur within an electrical equipment.

Incident Energy Visualization Features

  • Constant incident energy design levels per location
  • Arc current variation
  • Multiple electrode configurations
  • Variation based on system modes of operation:
    • Bus voltage
    • Maximum and minimum prospective short circuit currents
  • Equipment variations:
    • Gap between the conductors
    • Height
    • Width
    • Depth
    • Working distance
  • Global sample data updates based on equipment type and voltage.
  • Individual data sets per location (Bus, line side and load side).
  • Quick Copy/Paste sample data
  • User-defined variation limits
  • Visual representation of variations in TCC per location
  • Graphical representation of Incident energy area plots in TCC
  • C-Area plots for single phase arc flash below panels , UPS , phase adapters
  • C-Area plot input data display in OLV with Datablocks
C-Area Plot