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SESThreshold

SESThreshold is an application that computes thresholds for touch and step voltages, as recommended by industry standards.

In a modern grounding study, it is common to encounter a number of areas or zones with thresholds different from those for the rest of the site. SESThreshold allows specifying an arbitrary number of such zones of different thresholds, shapes, and sizes.

With a tabulated list of thresholds, the application is capable of plotting touch and step voltages against these thresholds, showing the color gradation across the zones in one single plot.

Several tools in SESThreshold help to specify the parameters for the analysis and visualize its results.

  • Touch and step voltages can be analyzed for multiple zones displayed in a single plot.
  • Each zone can have separate safety threshold specifications.
  • The copy tool easily allows copying of specifications from one zone to another.
  • Each threshold can be computed, user-specified, or ignored.
  • The color gradation in the resulting plot of the selected quantity easily shows the regions that are above and below the thresholds.
  • An integrated report table shows the threshold of each zone.

SESThreshold Integrated Tools

Zone Editor/Viewer

  • Multifaceted tool — works as an editor and as a viewer.
  • The network grid and profiles provide the backdrop onto which zones can either be created or viewed.
  • Create custom zones.
  • Create zones in accordance to the variations of the surfacing soil.

  • Selection of a zone from the viewer shows all of its settings and criteria in the Specifications panel.

  • Once the thresholds have been computed, the viewer allows sorting of the zones by threshold values for better visualization.

Decrement Factor Interactive Tool

  • Calculation of the decrement factor uses X/R as input.
  • Alternatively, decrement factor can be specified, in which case X/R will be computed.
  • The interactive tool offers sampling of a range of values (X/R or decrement factor), allowing for the visualization of the exponential decay of the sinusoidal fault current over time.
  • Also calculates Peak Voltage which is important in Zone-of-Influence studies of the interference analysis of telecommunication lines and equipment.

 

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