Star - Short-Circuit Analysis


Star - Short-Circuit Analysis

Plot short-circuit studies in STAR View

Overview

ETAP Short Circuit is fully integrated with ETAP STAR™, ensuring that Time-Current Characteristic (TCC) curves accurately reflect the system's response to both minimum and maximum fault levels.

Calculate the individual arcing current contributions and arc fault clearing time of all the protective devices involved in the arc fault. Calculated and allowable incident energy curves can be plotted in STAR View as a function of time and current. The max/min short-circuit calculations are provided for all fault types based on ANSI & IEC standards.

  • Built-in standards-based analysis (ANSI/IEEE and IEC) for regulatory compliance
  • Precision protection coordination calculations
  • Comprehensive fault scenario modeling features for real-world accuracy
  • Clear graphical visualizations and detailed reporting capabilities

 

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Key Features

Calculations

  • Balanced AC Network Short Circuit Analysis
  • Balanced (3P) and Unbalanced Fault Types (LL, LLG, and LG)
  • Total Bus Fault with local and remote contributions
  • ANSI/IEEE and IEC 60909 Standards
    • ANSI Standard Max (1/2 Cycle) and Min (30 Cycle) calculations
    • IEC Standard Max and User-Defined C Factor calculations
    • IEC Standard Min (Steady State or Initial Symmetrical)  calculations

Display Features

  • Global or individual impedance adjustment for calculation of maximum short-circuit currents
  • Display of Max and Min Fault Markers on Time Current Curves for any fault type
  • Smart clipping of Time Current Curve by Max Fault current from applicable fault types
  • Display local and remote contribution results on one-line diagram for any fault type 
  • Display calculated results in Phase and Sequence values

Reporting

  • Extensive reports for input, detailed, and summary of calculation results in different formats

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