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Power Line Systems - Model PLS-CADD/ULTRALITE - Software Tool for Quick Modeling

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PLS-CADD/ULTRALITE is a specialized software tool designed to facilitate the quick modeling of a single span of a conductor or wire. It generates comprehensive Sag-Tension reports and Stringing Charts for a user-definable range of span lengths and stringing temperatures. Developed with the intent of simplifying the process of wire modeling, the software offers a streamlined interface where all inputs are collected in a single dialog box, and both text and graphical results are updated in real time as inputs are modified. Key features include multiple wire tension input modes such as Horizontal Tension, Catenary, Sag, or Slack, along with an 'AutoSag' option that adjusts the wire to the highest tension within user-defined constraints. The software supports advanced sag-tension methods, making it suitable for educational purposes to study wire behavior under diverse conditions. The application runs on a 64-bit Microsoft Windows 10 or 11 environment, providing users with the flexibility to operate on powerful yet economical systems. It also includes an online library of over 5,000 predefined cables and customizable design criteria, supporting both metric and imperial units.

PLS-CADD/ULTRALITE is a streamlined version of PLS-CADD for quick modeling of a single span of conductor or wire. It develops a Sag-Tension report as well as Stringing Charts for a user definable range of span lengths and stringing temperatures.

Our goal in developing ULTRALITE was to provide the simplest possible application for modeling a span of wire in either a level or inclined state. Inputs are collected in a single dialog box and text plus graphical results update live as inputs are changed. The tightness of the wire can be input as Horizontal Tension, Catenary, Sag, or Slack. There is also an "AutoSag" option that pulls the wire up to the highest tension meeting user defined constraints (i.e. NESC, GO95, user defined, etc.)

Developed primarily for educational purposes for study of wire behavior of a single span under various temperature, wind, and ice scenarios, it provides traditional Sag-Tension tables and Stringing Charts based on Ruling Span theory. More advanced sag-tension methods and modeling functions better suited to modeling an entire line are available in our PLS-CADD software.

  • Sag-tension calculations

  • Stringing Charts

  • Works with any of the over 5,000 predefined cables in our Online Cable Library

  • Flexible Design Criteria

  • Imperial or Metric

  • 3D graphics update live to let you visualize your work

  • Span geometry entered as horizontal span length, change in elevation between ends and attachment height above ground.

  • Wire tension entered using one of following:

    • Tension

    • Catenary constant

    • Mid span sag

    • Slack

    • Automatic sagging criteria (% of RTS under varying combinations of wind, ice and temperature)

  • A Microsoft Windows 10 or 11 (x64) environment that lets you:

    • Run on powerful yet inexpensive computers

    • Use the most common graphical user interface (GUI) in the world

    • Print reports and plot drawings directly on any Windows compatible printer or plotter