Analysis software ANSI & IEEE

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ETAP Short Circuit software program allows for short circuit calculations based on ANSI and IEEE standards. In ANSI/IEEE short circuit software program, an equivalent voltage source at the fault location, which equals the prefault voltage at the location, replaces all external voltage sources and machine internal voltage sources. Three different impedance networks are formed to calculate momentary, interrupting, and steady-state short circuit currents, and corresponding fault current duties for various protective devices. These networks are: ½ cycle network (subtransient network), 1.5-4 cycle network (transient network), and 30 cycle network (steady-state network). ANSI/IEEE Standards recommend the use of separate R and X networks to calculate X/R values. An X/R ratio is obtained for each individual faulted bus and short circuit current. This X/R ratio is then used to determine the multiplying factor to account for the system DC offset. Short Circuit Software - ANSI & IEEE Key Features Single-phase & panel systems device duty evaluation Determine maximum & minimum short circuit fault currents Calculate ½ cycle, 1.5–4, & 30 cycle balanced & unbalanced faults (3-phase, L-G, L-L, L-L-G) Check momentary & interrupting device duty capabilities Check circuit breaker closing & latching capabilities Network Analysis Short Circuit Analysis Software Short Circuit Analysis Software Short Circuit Analysis Software ANSI & IEEE Toolbar Evaluate symmetrical or total rated circuit breakers