Short Circuit Analysis for Unbalanced Networks

Device Duty Calculation & Evaluation ​for Multi-Phase, Single-Phase, AC & DC Systems​

Overview

ETAP Unbalanced Network Short Circuit is the most comprehensive unbalanced network short circuit analysis software to study shunt and simultaneous faults for distribution, transmission, and traction networks.

• 3-phase unbalanced and 1-phase networks
• Run and evaluate all fault types in one study
• Shunt and simultaneous faults
• Fault current as function of time with AC & DC decay
• Simulate protective device responses to fault currents and configuration changes

Key Features

• Unbalanced Network Short Circuit Standards​
  • ANSI C37.10 for AC systems​
  • IEC 60909 for AC systems​
  • IEC 61660 for DC systems​
  • GOST Russian Std. for AC systems​
• Unbalanced / balanced faults on unsymmetrical systems
  • Shunt fault – 3-phase, 3-phase - ground
  • Line - ground – Phase A or Phase B or Phase C
  • Line - line - ground
  • Open circuit - Phase A or Phase B or Phase C
  • Conventional short circuit calculations
  • Pre-fault system loading consideration 
• Result visualization on OLV and GIS view​
• Generator circuit breaker duty evaluation per IEC 62271 / ANSI​