Arc Flash Auto-Evaluation & Coordination

Arc Flash Auto-Evaluation

Automated Arc Flash Energy Evaluation

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. Arc Flash Auto solution automatically evaluates arc-flash incident energy and equipment arc flash damage points to quickly resolve these conflicts limiting the number of scenarios required or even removing the need for an isolated arc flash study.

Automated Arc Flash Evaluation

  • Risk analysis based on multiple operating conditions and current variations
  • Automated arc flash energy evaluation based on 
    • Constant Energy Boundary Area (C-area plots) – Patent Pending 
    • Arc Energy Damage Point – Arc-Resistant Switchgear
      (IEEE C37.20.7) 
  • Automatically evaluate line, bus and load-side faults
  • Tabular & Graphical Evaluation with warnings & alerts
  • Arc Flash Evaluation Rulebook
  • Individual & Global Data Evaluation Criteria
Arc Flash Auto-Evaluation Capabilities

Arc Flash Auto-Evaluation Capabilities

  • Interactive Result Viewer
  • Visual representation of variations in TCC per location
  • Graphical representation of Incident energy area plots in TCC
  • C-Area plot input data display in OLV with Datablocks
  • Global Filters for Special Conditions -
    New IEEE 1584-2018 2kA, 240V Rule
  • Automatically Update Max & Min Short-Circuit Currents for Evaluation
  • Account for Equipment Isolation & Overcurrent Protective Device Tolerances
  • User-defined variation limits
  • Export evaluation results to MS Excel reports
Automated Arc Flash Evaluation

Incident Energy Visualization on Time Current Curves (TCC)

Constant energy boundary area plots

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


Arc Flash Auto-Evaluation

ETAP Arc Flash Auto-Evaluation allows you to quickly evaluate arc flash incident energy with automated protective device coordination study to significantly reduce costly modifications and mitigation equipment. The webinar demonstrates the automatic evaluation of C-area plots and equipment damage points.