One-Line Output Tab (IEC)

To set short circuit options, from the Short Circuit focus, click SC Options.

Select the One-line Output tab to specify various parameters for controlling what is output to the one-line during the short circuit study.

Figure 1: One-line Output Tab of the Short Circuit Options Dialog Box

Option Description

Display Options

These options enable you to control what appears on the one-line while performing short circuit calculations.

Show Units Select for short circuit results to appear with their corresponding units, such as kA, MVA, or pu for branch flows and kV(LL) or pu for voltages.
Show CT and Relay Symbols Select for the symbols for CT and relays to appear in the one-line.
Show Branch Flows Select to display branch flows during a short circuit. If these are not selected, only the bus fault current appears on the one-line.
One-Line Output Options
Decimal Precision This sets the number of digits past the decimal point for values displayed on the one-line.
Display Units
Fault Current:

Fault Current: Enables you to choose the unit of fault current and the type of current. You can display on the one-line the following types of currents:

  • Symmetrical: rms value of AC component.
  • Asymmetrical: rms value of AC and dc components combined (total).
  • Max Sym and (Max Asym): The maximum phase current among the three phases. Both AC symmetrical rms and asymmetrical rms values are displayed, with the asymmetrical values appearing in parentheses.
  • Max Sym and (Max Momentary Peak): The maximum phase current among the three phases. Both initial AC symmetrical rms (Ik”) and peak (Ip) values are displayed, with the peak values appearing in parentheses.

The following fault current units are available for display in the one-line:

  • kA
  • MVA
  • Per-unit

Vector Coordinates

Enables display format as:

  • Magnitude
  • Magnitude and Angle
  • Real and Imaginary

More Information

IEC Short Circuit Reference Short Circuit Options (IEC)
Setting the Short Circuit Method  
Faulting a Bus  
     

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Help was last updated on 7/10/2017