<%-- Flash Nav--%> <%-- Flash Nav End--%>
<%-- main EDSA page 2 SubNav--%>
     
 
   
  EDSA CABLE PULLING

EDSA’s Cable Pulling program allows power systems engineers to quickly calculate the sidewall bearing pressure and pulling tension that cables undergo during installation, in order to determine the lengths of cable and splices.
 
  Construction field professionals need to know that the pressures and tensions the cables are submitted to do not damage the cable. Electrical contractors and installers of cables seek to make the longest un-spliced runs possible because splices are costly and are frequently the source of circuit failures.
   
 
click to enlarge
Graphical Manipulation: Cable Data
       
    Pulling lengths of cables determine the number and location of splices, electrical manholes, and pull boxes. Cable pulling calculations should be done during the design stage of a raceway-feeder, or cable installation, to find the values for expected tension when pulling cable, and also find the pulling force caused by sidewall pressure on the cable pulled around the bends. The main parameters that must be considered in such calculations are: number and diameter of cable, type of cable, the coefficient of dynamic friction between cable and conduit, type of conduit, and bending radii. The results of the calculations should be within the allowable limits as established by the cable manufacturers.  
       

 
     
    Key Program Features:
     
  • Cable type: single cable, three cables triangular, three cables cradled, four cables diamond;
  • Cable data: any size, type, insulation category, or voltage level can be entered. All data entered are for single cable and the program extends the information for the number of conductors pulled;
  • Permits the user to input 99 sections in every profile. The number of profiles is limited only by the user's hard disk capacity;
  • Extensive library: the pulling compound data, the cable data/feeder library and the raceway data. The user may add, modify and delete entries in the libraries;
  • The program helps the user in quickly and easily performing "What if" type of analysis by permitting the user to design and view raceway configurations while testing different lubricating compounds;
  • Provides graphic display of raceway sections in front, side, top and perspective views;
  • Converts all quantities from U.S. Customary to SI units at the touch of a button.
  • Provides both graphic and text output;
  • Provides quick access help to virtually every item displayed on a screen;
  • Maintains libraries of standard and user defined cable parameters, raceways and lubricating compounds for quick inclusion into analysis;
  • Performsboth forward and reverse pull analyses in a single pass.
     
     
     
     
 
     
     
 
     
     
 
   

<%-- EDSA html Navigation and Copyright start--%>