WAZIPOINT WAZIPOINT Engineering Science & Technology: Cable Pulling & Jointing Tools and Equipment

Sunday, December 8, 2019

Cable Pulling & Jointing Tools and Equipment

Cable pulling, Jointing and Termination  equipment play very important rules to ensure a quality work to operate safe and long-life operation. Cable pulling tools make to easy and safe cable laying, less cable sheath or screen damage/scarce, applying pulling tension correctly and spacing cable in trench or duct properly. Cable Joint and Termination tools are very much special for cable jointing and  cable sealing end termination.

How Use Cable Pulling Tools & Prepare Cable Trench?

Before laying cable, cable trench or cable duct must prepare as per site requirement. Cable ducts or trench measurement will not same for all, depending the voltage rating, cable size, laying location and others vicinity factors cable ducts or trenches depth and width varies.
According to low, medium and high voltage cable, the open trench depth and width are varies. Usually the higher the voltage range the higher the depth and width of cable trench.

At the bending point, the cable trench must be followed adequate size as per cable manufacturer recommendation, means trench width must be sufficient to bend the cable without overexcite mechanical stress to cable. The cable bending diameter depends on cable flexibility, and cable flexibility depends on cable constructed materials.  Corrugated aluminum metallic sheath  is used to get more flexibility for high and extra –high voltage cable.
Cable trench  should be sufficient to movement the installer to install the cables and allow the cables to be installed within specified cable pulling dimensions and without damaging the cable sheaths considering bending radii.

 Equipment Required For  Cable Laying In Trench 


Key equipment for cable laying in trench with brief description are as below:
  1. Cable Winch
  2. Winch Wire Rope
  3. Cable Pulling Swivel
  4. Cable Socks
  5. Cable Rollers
  6. Corner Rollers
  7. Draw Off Rollers
  8. Cable Drum Trailer

Cable Pulling WinchCable Winch– A cable winch is a mechanical device that is used to pull in (up) the cable   or let out the cable or to adjust the cable pulling tension. It consists of a spool and attached hand crank.

During cable the cable  winch is placed the end of the cable trench that provides smooth and controlled actual pulling of the cables through the trench. There are various cable winches depending the types of cable to pull, like- telecommunications, heavy power cables and lightweight small power cabling etc.

Winch Wire Rope– Winch wire rope is nothing but a metal wire rope twisted into helix formatting a composite rope. Larger diameter winch rope consists of multiple number of wire strands to provide larger pulling strength.
Winch Wire Rope

During cable pulling in a cable trench the winch wire rope is attached to the cable  end eye bolt to be pulled through the winch rope.  This winch wire rope allows for heavier cables to pull through the trench and gives extra strength.

Cable Pulling SwivelCable Pulling Swivel–The cable pulling swivel is a connecting device that connect between the grip (cable) and the pulling rope or winch wire. The cable pulling swivel is designed such a way that used to allow the winch wire to rotate when being pulled and avoid kinking or twisting the cable core and protect from damages.

The impertinency to select the cable pulling swivel is to mind the maximum pulling capacity at or above the pulling-force of the cable puller.

Depending the cable types and pulling purposes swivel or connector may different types, like- Clevis pin, Line swivels, Rope connectors, Breakaway swivel and connectors,  shackle and connectors, Wire rope bridle slings, etc.

Cable Pulling Shocks
Cable Socks–Cable pulling sock is a such kind of cable installation tools that high tensile galvanized steel wire shock than ensure an efficient method of supporting for cable pulling.

Cable socks are also called as cable grips or cable shocking. This is the most handy efficient tools to pull the cable in trenches, ducts or buildings. This is high tensile galvanized steel wire, also available in stainless steel or Kevlar constructed.

Cable Roller– Cable roller is simple cable pulling tools that used to roll  or pull the cable on it. It is placed 3 to 4 m apart and at corners to allow for the bending radius of the cable. Cable easily moves on it without any scratch on it and cable puller feel less weight on it. Cable roller mainly two types according its using location.
    1. Straight Line Cable Rollers
    2. Corner Cable Rollers 
    3. Draw Off Rollers
Straigth Cable RollerCorner Cable Roller
The straight line cable rollers are used at straight part of the cable trench. Normally 3m to 4m apart it be used, also consider the cable weight and  diameter. Straight cable rollers protect the cable to touch the bottom and soil surface that may cause scratch on cable outer jacket. 

Corner Rollers are to be used within the cable trench where there is a bend in the  cable trench. Actually corner cable rollers are incorporated a vertical and horizontal cable roller to allow cable pulling safely without any damages. Actually corner roller protect cable from extra stress on cable outer jacket due trench bending.

Draw Off Roller is one kind of cable pulling roller which is used near the cable drum during cable pulled off from drum to trench. It is used to direct or guide the cable to the trench in straight line.

 Cable Drum Trailer- The cable drum trailers sense to transport the cable drum from one place to another in site, on the other hand cable trailer is also mean to stabilize the cable drum while the cable is being pulled through the cable trench or cable ducts. Cable drum trailer using to stabilize the drum during cable pulling is commonly used as Cable Jacks.


  Cable Jointing Tools & Equipment

To prepare the cable to joint each other or for cable sealing end many especial tools and equipment are necessary to a cable jointer. It also varies from types of cable and types of jointing accessories. A very common tools list is to be used cable jointing and termination works.

List of Common Tools Used for Cable Jointing and Sealing End Termination
Sl. No. Name of Item Qty(pcs) Item Code Remarks
1 Al Sheath Cutter 1 T3201-005
2 Band Saw 1 J3041-017
3 Temperature Control Box 1 J1090-066
4 SRC & Slip-on Insert Tool 1 T1020-031 50 Ф -140Ф
5 Hydraulic Compression Pump 1 J3061-064 Small
6 Hydraulic Compression Tool 1 J3074-054 Small
7 Hydraulic Punching Tool 1 T3001-038
8 Electric De-humidifier 1 J1120-033
9 Vernier Calipers 1 M2064-062 Damage
10 Belt Sander 1 T1042-073
11 Humidity Meter 1 M2120-054
12 High Voltage Insulator Tester 1 M2032-028
13 Torque Wrench 1 M2014-014
14 Pressure Gauge 1 C1220-062
15 Rubber Sleeve Installation Machine (132KV) 1 J1132-009
16 Hydraulic Compression Pump 1 J3060-050 Big
17 Hydraulic Compression Head 1 J3072-055 Big
18 Hydraulic Compression Tool Set 1 T3092-046 Small
19 Impact (Big) 1
20 Impact (Small) 1
21 Red Box 1 25 & 26 missing
22 Jack saw 1 Damage
23 Hammer Drill 1
24 Heat Gun 1
25 Drier 1
26 Vacuum Cleaner 1
27 Lever Block
0.8 Ton 6
0.5 Ton 8
0.25 Ton 6
28 Hand Lamp 4
29 Soldering Iron 2
30 Heating Belt 15
31 Extension Cord 3
32 Heat Belt Power Cable  14
33 Thermometer 4
34 Oil Gate Valve 2
35 Ratchet Belt 16
36 Saw Cutter 1
37 Gas Torch 1
38 Cylinder (Big) 1
39 Cylinder(Small) 1
40 Burner 4
41 Aluminum Angle 9 1.5m
42 Nose Cone (132KV 500sq.mm) 1
43 Eye Bolt
M-16 4
M-12 6
M-10 4
44 300 Scale 3
45 600 Scale 1
46 Transformer 1
47 Blower 1
48 OFC Material Box 1
Consumable Item for Use During Cable Joint and Termination
Sl. No. Item Name Qty  Item Code Remarks
1 Wrap 30 Pcs
2 Aluminum Foil 30 Pcs
3 P.E Tube (1800 mm) 1 Role
4 P.E Tube (600 mm) 3 Role
5 Hand Gloves 20 Bundle
6 130 C tape 30 Pcs


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