Bunching and stranding lines

The bunching process can be explained as follows: various wires coming into a bunching machine which will be in charge of assembling them into a bunch or a strand.
The phase stranding process consists of assembling some strands or cables for the construction of a multi-conductor cable. Depending on the shape of its cross section, this process can be called round stranding or sectoral stranding.
These 2 processes can be carried out either with flexible or rigid and either with bare or insulated conductors (see our section Insulating and Sheathing lines).
The shielding process will be used to avoid the electric current which is going through the cable from making noises and interferences.
Generally the cables which are produced this way will be eventually sheathed (see our section Insulating and Sheathing lines)
The armouring process offers the cable when installed underground a mechanical protection against strokes, tensions and rodents.
Do not hesitate to ask our engineers about your needs and technical requirements! TECALSA will manufacture the machine you dream about!

1.- BUNCHING MACHINES AND SKIP STRANDERS
The double twist technology is the best choice you can make in order to achieve large production levels at a much lower cost than with traditional stranding machines. All our models are equipped with carbon fiber bows.
These machines can work either with flexible or rigid and either with bare or insulated conductors.

DOUBLE TWIST BUNCHING MACHINES


DOUBLE TWIST BUNCHING MACHINES
DOUBLE TWIST BUNCHING MACHINES (2)
DOUBLE TWIST BUNCHING MACHINES (3)
At TECALSA with our experience of over 45 years in the cable industry, we proudly claim that our double twist bunchers are the absolute reference on the European market thanks to their high production speed and the quality of the finished products, but also thanks to their longer lifespan, their easy maintenance, their user friendliness! The short time needed for bobbin or reel loading and unloading is a real plus.
Models: RDT 630RDT 800RDT 1250RDT 1600RDT 1800
MODELO RDT 630 RDT 800 RDT 1250 RDT 1600 RDT 1800
Ø BOBINA 630 mm. DIN46397 800 mm. DIN46397 1250 mm. DIN46397 1600 mm. DIN46397 1800 mm. DIN46397
TORSIONES/MIN 6000 Max. 4500 Max. 1900 Max. 1200 Max. 1200 Max.
VELOCIDAD MAX 3000 r.p.m 2250 r.p.m 950 r.p.m 600 r.p.m 600 r.p.m
VELOCIDAD LINEAL MAX. 250 m/min. 250 m/min. 250 m/min. 200 m/min. 170 m/min.
Ø HILO MIN.-MAX. 0,15 - 1,04 mm
35-18 AWG
0,2 - 135 mm
32-15 AWG
Cu 0,8 - 3,0 mm
20-9 AWG

AL 1,3 - 3,6 mm
16-7 AWG
Cu 0,8 - 3,6 mm
20-7 AWG

AL 1,3 - 4,5 mm
16-5 AWG
Cu 0,8 - 3,6 mm
20-7 AWG

AL 1,3 - 4,5 mm
16-5 AWG
CABLE FLEXIBLE SIN AISLAR 10 mm²
7-8 AWG
16 mm²
5-6 AWG
250 m/min - 70 mm²
145 m/min - 105 mm²
125 m/min - 125 mm²
200 m/min - 125 mm²
100 m/min - 240 mm²
170 m/min - 125 mm²
85 m/min - 240 mm²
CABLE RÍGIDO SIN AISLAR 6 mm²
9-10 AWG
10 mm²
7-8 AWG
250 m/min - 55 mm²
145 m/min - 70 mm²
125 m/min - 105 mm²
200 m/min - 90 mm²
100 m/min - 175 mm²
170 m/min - 90 mm²
85 m/min - 175 mm²
COMPACTADO 4 mm²
11-12 AWG
10 mm²
7-8 AWG
250 m/min - 35 mm²
145 m/min - 70 mm²
200 m/min - 40 mm²
100 m/min - 80 mm²
170 m/min - 40 mm²
85 m/min - 80 mm²
CABLE AISLADO RÍGIDO 6 mm²
9-10 AWG
10 mm²
7-8 AWG
250 m/min - 55 mm²
145 m/min - 70 mm²
200 m/min - 60 mm²
100 m/min - 115 mm²
170 m/min - 60 mm²
85 m/min - 115 mm²
CABLE AISLADO FLEXIBLE 10 mm²
7-8 AWG
16 mm²
5-6 AWG
250 m/min - 70 mm²
145 m/min - 105 mm²
200 m/min - 90 mm²
100 m/min - 175 mm²
170 m/min - 90 mm²
85 m/min - 175 mm²
Ø MAX PASO CABLE 7 mm
0,275"
10 mm
0,4"
25 mm
1,18"
32 mm
1,26"
32 mm
1,26"
PASOS 9 - 138,4 mm
0,35 - 5,45"
11,2 - 174,2 mm
0,44 - 6,86"
50 - 478 mm
1,96 - 18,8"
50:600 mm
1,96 - 24"
50:600 mm
1,96 - 24
Ø VOLANTES 132 mm
5,2"
165 mm
6,4"
450 mm
18"
700 mm
28"
600 mm
24"

SINGLE TWIST BUNCHING MACHINES


SINGLE TWIST BUNCHING MACHINES
Our single twist bunching machines are specially designed for the stranding of insulated conductors with or without inner lapping for the production of data cables and special cables. At TECALSA our single twist bunchers are tailor made for specific cable productions according to the customer’s requirements. Please inquire for our models for reel dia. 1000 – 1250 – 1600 and 1800 mm.

SKIP STRANDING MACHINES


SKIP STRANDING MACHINES
When looking for an affordable but high production strander working without back-twist, our skip stranders are your first choice. They are suitable for a limited product range, but for 1+6 overhead conductors (AAAC y ACSR), these skip stranders are preferred by most of our customers as an alternative to the tubular stranders. On top of all this they are the best solution when stranding insulated conductors for overhead cables (twisted cables, SIP, ABC or similar).
Technical specification

  • Bobbins or reels: 630, 1000, 1250, 1600, 1800 mm
  • Possible constructions: 1+3, 1+4. 1+5, 1+6
  • Maximum conductor cross section: 240 mm2
  • Stranding speed: 400 - 1500 RPM
  • Line speed: 200 m/min

EQUITENSIONERS AND EQUALIZERS


EQUITENSIONERS AND EQUALIZERS

Suitable for our bunching machines, depending on the paying-off system used by the customer
2.- STRANDING MACHINES
All types of rotating stranding machines are available in our catalogue. High performance and user friendly machines, they are all equipped with components of the latest technology.

TUBULAR STRANDING MACHINES


TUBULAR STRANDING MACHINES
Our high speed tubular stranders with encircling bearings are machines which are offering the best stranding specification for bare conductors of maximum 19 Cu or Al wires, especially for overhead cables. In this type of tubular stranding machines the conductors are assembled with very little back twist in the wires and it will thus provide maximum quality conductors. Although this type of strander is nowadays losing ground against our double twist bunching machines which are offering a greater return on investment, they are still a must when quality is at stake and difficult processes are involved.
Technical specification:

  • Bobbin diameter: 250 - 630 mm
  • 1+6 – 1+12 – 1+18 bobbins
  • Rotating speed: 2000 - 950 RPM

DISC TYPE RIGID STRANDER


DISC TYPE RIGID STRANDER
DISC TYPE RIGID STRANDER (2)
This option has to be considered as the affordable alternative to our cage type rigid strander. Very practical, user friendly and easy to load, it is also very easy to maintain. This machine is ideal for the cable manufacturer who does not need a high production level.
For bobbins diameter 400 and 630 mm
It can be supplied in the configuration you wish (1 + 6 + 12 + 18 + 24 + 36, etc.)

CAGE TYPE RIGID STRANDER


CAGE TYPE RIGID STRANDER
The cage rigid strander is the main machine for the production of energy cables. This type of strander combines the best balance between quality, efficiency and flexibility when comparing it with other methods of stranding. At TECALSA we are concentrating in improving the productivity, the speed and the reliability of these machines.
The rigid strander formed by various independent frames is ideal for the production of all types of conductors. It can be supplied with an automatic bobbin loading system, compacting heads, post-formers, capstans, etc.
It is ideal for the following solutions: Production of Cu or Al round or straight sectoral conductors, pre-spiraled and Milliken, production of bare overhead conductors in various compositions: hard Copper, AAAC, ACSR and similar designs, shielding of medium and high voltage conductors, armouring with galvanized steel wires.
Technical specification:

  • Diameter of bobbins: from 560 up to 800 mm
  • Composition of the cages: 6, 12, 18, 24, 30, 36, 42, 48
  • Maximum rotating speed: 350 RPM
  • Line speed: 75 m/min

PLANETARY STRANDER


PLANETARY STRANDER
Planetary type with 100% back twist.
Used for the stranding of various conductors, it offers the possibility to strand various bare, insulated or sectoral conductors on a core. It can work either in S or Z.
This is a machine which is working with large weights in movement and high inertia which is making it slower than other stranders. It is used for products which require a perfect geometry between their conductors. Its main advantage resides in its stranding system which introduces lesser twist in the elements to be stranded thanks to its specific smooth angles. It is suitable for productions with high tensile strength steel wires or for the production of umbilical cables.
Technical specification:

  • Bobbin diameter: 630 mm
  • Composition of the cages: 6, 12, 18, 24, 30, 36
  • Maximum rotating speed: from 60 up to 110 RPM
  • Line speed: 60 m/min

DRUM TWISTER


DRUM TWISTER
Our Drum Twister is a universal and multi-purpose stranding machine, it can also be used for shielding and armouring processes. It can be supplied with a complete range of rotating pay-offs and rotating take-ups as well as with all the ancillary equipment for any potential application.
Nowadays with this type of machines the trend is to be using larger diameter reels for the production of longer lengths of cable. The larger the reel, the slower the machine will be running, but also the more efficient it will become thanks to the lesser amount of stops for reel changes. These machines are suitable for: Stranding insulated conductors for low, medium and high voltage cables, stranding bare sectoral conductors for the production of Milliken conductors for Very High Voltage, shielding conductors of medium and high voltage, Armouring with galvanized steel wires
Technical specification:

  • Take-up reel diameter: from 1.600 up to 4.000 mm
  • Reel maximum weight: 30.000 Kg
  • Rotation speed: from 50 up to 200 RPM
  • Line speed: from 50 up to 150 m/min

LAPPING AND TAPING MACHINES

TANGENTIAL LAPPING MACHINE


LAPPING AND TAPING MACHINES - TANGENTIAL LAPPING MACHINE
Formed by a fixed base frame on which the tangential type rotating taping head is mounted and driven by an indenpendent motor.
All the components of the pad holders are mounted inside a craddle in the rotating structure. The brake of the tape is regulated automatically and its tension is regulated manually.
Type of tape: paper, plastic or copper of maximum thickness 0,20 mm. Available for 2 pads - outer diameter 600 or 800 mm and width from 20 up to 100 mm. For a cable diameter 100 or 120 mm max. Max. speed 500 RPM.

TANGENTIAL TAPING MACHINE


LAPPING AND TAPING MACHINES - TANGENTIAL TAPING MACHINE
Formed by a fixed base frame on which the tangential type rotating taping head is mounted and driven by a motor controlled by a frequency variator.
The 2 pads are fixed on both pad holders which are mounted at both sides parallel to the cable. The tape is guided by steel rollers whose angular and axial position can be regulated in order to give the tape the necessary twist for a correct positionning on the cable. The brake of the tape is regulated automatically and its tension is regulated manually.
Type of tape: steel, copper and aluminum tape of maximum thickness 1,00 mm. Available for 2 pads - outer diameter 600 or 800 mm. For a cable diameter 100 or 120 mm. Max. speed 500 RPM.

CONCENTRIC LAPPING MACHINE (ORBITAL)


LAPPING AND TAPING MACHINES - CONCENTRIC LAPPING MACHINE (ORBITAL)
Formed by a fixed base frame on which the pad holder is mounted. It is driven by an independent motor and a brake tension control is mounted on the plate itself. The tape is guided through several guides for a smooth unwinding.
Type of tape : textile, paper, copper, aluminium, etc. Available for pad outer diameter 600 mm and width from 20 up to 100 mm. For a cable diameter 55 mm max. Max. speed 500 RPM
All our lapping and taping machines are controlled electronically for lay length, compensation – accumulation and synchronisation with the other components of the line in which they are working.