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Calculation of balancing weights (ballasts), tearing forces affecting the attachment fittings of wires, cables

Calculation of balancing loads in case of insulator strings' deflection due to wind and stress for the insulator strings stability at lowest temperature and verification of teraring forces affecting the attachment fittings of wires, cables on overhead communication and power transmission lines.

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LineS, program package for designing overhead power and communication lines (OHL, FOCL OHL, FOCL). The calculating part of the program has been used since 1985 beginning with SM-4 EVM (System of mini-computers developed in USSR in 1970-80s).
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The calculation in Lineload program is performed to make the final decision on spotting of the supports on the line route profile, could be performed both before and after the calculations of mounting stresses and sag (LineMount or LineMountCad) with possible re-calculation if the positions of some supports were changed.

The entire behavior of the wire, cord, self-supporting cable is verified by LineMech (LineMechCad), program, which includes, besides the approximate mounting modes, the loading modes (maximum loads, lowest temperatures), the modes necessary for other calculations including that for defining the overall span.
Climatic conditions, climatic parameters specifications and reliability coefficients could be imported from source data files for LineMech (LineMechCad) program as well.

The permissible tension (stresses) are justified in LineMech (LineMechCad) or for self-supporting fiber optic communication lines on existing overhead power transmission lines (FOCL OHL) with the help of  LineMount (LineMountCad).

The clearances with engineering objects and natural obstacles according to EIR are provided by LineCross (LineCrossCad) program.

LineLoad program allows to:

1.    Define the weight of the balancing load (ballast or, in case of its small weight the vibration dampers), the largest of the two calculation results for intermediate and intermediate-angle supports of power transmission lines:
-    To compensate the dangerous deflection of supporting insulator strings due to wind and stress;
-    To provide stability to the supporting insulator strings at the lowest temperature.
2.    Define the tearing force affecting pin-type insulators that could be torn away from the pins, tearing force affecting the supports.
3.    Define the tearing force affecting the supporting attachment fittings of self-supporting communication cables for FOCL as well as for FOCL OHL.
4.    Decide on using the taller support, moving the supports around or decreasing the stress on the sector of the line route.
5.    Make a dramatic decision on replacing the intermediate support of an overhead line to a strain support.
6.    Change the intermediate, supporting attachment fitting of a self-supporting communication cable to a strait fitting, which is possible in some cases.
7.    Mount the cable of FOCL OHL higher on the support.
8.    Make final decision on spotting of the supports of an overhead line on the line route profile.

Besides the description of the required source data, Help file for the program gives recommendation on the application of calculation results and their place in each particular project.

The calculation results are presented in the form of Excel table. Each calculation for a researched support is put on a different sheet

For more details see the User Guide for the program (Program description. Application.) which could be downloaded along with the demo version.