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3 park avenue, new york, ny, usa. measure the circumference of the cable and find the correct size. responsibilities tools / equipment materials. installation methods many diferent methods are used for cable electrical cable pulling procedure pdf installation. local company practices and specifications may be in place pdf concerning cable access and how it relates to a specific product or application. 2 tension limitations 119 8. for telecommunications cables we recommend conductor pulling with a cable pulling head. this manual is intended for use by the design engineer and the installer in the field and is not a text on power system design or electrical circuit analysis. accordingly, energy cables are designed to bend, but as with pulling tension, there are limitations pdf to bend radius that must be observed. general field practices are provided to aid in preparing for large and small cable installations.
plan the correct layout cable/ hose weight should be distributed evenly across track window. the purpose of work procedure for cable pulling generating this method statement is to define the procedure step by step to implement the correct practice for laying the cable from substation to the location of newly assigned area. do not apply more pulling force to the cable than specified. these methods are recommended for all types of power and control cables. this instruction manual is a step- by- step guide for end and termination of tight- buffered cable, including sheath removal, core preparation, and fiber preparation. 6 sidewall pressure ( swp) 123 8. the information provided is concise and should be adequate for the majority of installations. continuous pressure applied to the pedal will switch the winch ‘ on’. correctly pdf prepare cable hang cables for 24 hours before installing in track to relieve spool storage memory. load cables/ hoses correctly using the planned layout, load each cable/ hose. 5 pulling lubricants 123 electrical cable pulling procedure pdf 8.
figure 4: pulling grip installed on cable 3m 88t electrical tape or a suitable substitute should then be applied over the pulling grip. do not bend the cable more sharply than the minimum recommended bend radius. remove foot pedal from stowed electrical cable pulling procedure pdf position shown, place on a level working surface and plug into winch control panel. releasing the pedal will turn the winch ‘ off’. 1 suspended by clamping. these include cable lubrication methods, pdf conduit- cable pulling charts, pull rope selection criteria, pulling attachment methods, and alternative methods to traditional cable pulling tension monitoring. manuel bolotinha independent researcher abstract the common methods of cable laying are: • direct in the ground in trenches ( underground cables). the institute pdf of electrical and electronics engineers, inc. definitions pqp : project quality plan psp : project safety plan. the heavy duty foot pedal controls the rotation of the drum ‘ on’ or ‘ off’.
7 minimum bending radii 123 8. the final step in the cable- pulling process is determining whether the pulling procedure tension will compromise the conductor' s sidewall bearing pressure limit. this document details installation and pulling of mv cable : preparation of work. 3 helpful hints 120 8.
do not crush the cable or allow it to kink. 1 methods of gripping cables 119 8. 6 vertical suspension 8. cable properties relevant for installation the most important properties of cables during installation are the tensile force, the bending radius and the installation tem- perature. scope of this method statement covers the following activities. installation of the system. 1 this document provides requirements to ensure all electrical cable pulling in the refinery is completed in a safe manner. damage to armour can result in bird- caging and sheath splits. avoiding procedure cable torsion when pulling is important, and is largely addressed electrical by using rotating pulling heads and a suitable cable pulling sock.
when you pull a cable or individual conductors through a raceway bend or around a sheave, sidewall bearing pressure ( swbp) develops between the cable or conductor wall and the bend or sheave. in preparing for a cable pull, it is just as important to cover the small details as it is to assure that the cable does not exceed maximum sidewall pressure; minimum bending radii and maximum pulling tensions. caution: fiber optic cable is sensitive to excessive pulling, bending, and crushing forces. 5 overhead messengers 128 8.
4 pulling tension calculations 121 8. approved 8 march ieee- sa standards board abstract: electrical cable pulling procedure pdf the design, installation, and protection of wire and cable systems in substations are covered in this guide, with the objective of minimizing cable failures and their consequences. 4 installation methods 125 8. select the required pulling grip, when selecting a pulling grip, it is extremely important to select a grip of the correct type, size and maximum rated capacity. abstract: installation methods to improve cable pdf installation practices in generating stations are provided.
1 figure 3: tape cable up to or past mark on cable the pulling grip should then be inserted onto the cable that is covered by the tape ( see figure 4). include locations of the cable puller and cable reel. the user of this document must ensure the current approved version of the document is being used. tension built up around each bend will propagate back down.
• in cable trenches in outdoors switchyards. scope this procedure to clear the method of the supply, installations and pulling of mv cable. distribution cable pulling grip installation procedure rev. pulling the cable through a rope will restrict rotation and can create problems. in our example we have used a electrical cable pulling procedure pdf cable grip. minimum cable bend radius = multiplier x o. the fastening of the pulling rope to the cable must be undertaken with care to avoid ‘ losing’ the cable on the way. it defines requirements, limitations and responsibilities for performing an electrical cable pull.
pdf these include pulling, blowing and pushing into ducts, direct burial and aerial installation. delivery and inspection upon arrival of material at site. remove the wooden cover of the cable drum. minimum bend radius for non- shielded, non- armored cables thickness of insulation ( mils). attachment # 3: provide overall plot plan outlining of the cable pull showing its travel path. consult the cable specification sheet for the cable you are installing. heavier cables should be placed toward outside of carrier.
general field practices01 introduction 01 preplanning 01 low ambient temperature 02 equipment 02 training radius 04 handling and storage guidelines 05 dynamometer corrections 07 diameters of nonjacketed cable assemblies 08 electrical pull boxes 08 cable lubrication selection 09. 1 maximum pulling tension on cable 4. attention: printed copies should be used with caution. cable is rarely installed perfectly straight from point to point. fastening a pulling rope to a cable and this should procedure be chosen to suit the cable type.
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