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Auxiliary Cables

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We are amongst the prominent Manufacturers and Suppliers of Auxiliary Cables. The Auxiliary Cables offered by us are made of high quality wires and can be used in various electrical applications.


Features
  • Good Quality
  • High Voltage
  • Good Insulating Power
  • High Tensile Strength



All cable conform to IS : 1554 (Part -1) : 1988 for working voltages upto 1100 volts. Wherever required, KCP can offer cables as per other national or international standards or special requirements.
  • Conductor
    • Copper or Aluminium
  • Applicable Standard
    • IS : 1554 (Part -1) : 1988
  • Range
    • 5C x 1.5 sq. mm to 37C x 1.5 sq. mm
    • 5C x 2.5 sq. mm to 37C x 2.5 sq. mm

Cable Construction
Conductor : Solid stranded or Flexible Annealed Electrolytic Copper bare/tinned coated conforming to IS: 8130: 1984

Insulation : Extruded layer of PVC 70°C/85°C/105°C (conforming to IS: 5831: 1984) with colours as per specification or cores are identified by printing numbers under scheme as per IS: 1554(Part – 1): 1988.

Core Identification
For Control cables upto 5 cores, the cores are identified by different colours as per IS 1554 :
  • Single Core : Red, Black, Yellow or Blue
  • 2 Core : Red and Black
  • 3 Core : Red, Yellow and Blue
  • 4 Core : Red, Yellow, Blue and Black
  • 5 Core : Red, Yellow, Blue, Black and Grey

Where the number of cores exceeds 5, two adjacent cores are blue for reference and yellow for direction in each layer. The remaining cores in each layer are grey. On specific request we can also provide core numbering for Control cables.

Laying : Insulated conductors are laid in successive layers, in opposite direction to form cable cores.

Inner Sheath / Bedding : An extruded layer of PVC is applied as bedding or PVC tape (conforming to IS: 5831: 1984).

Armouring (if requested) : Galvanized Steel Wires / Galvanized Steel Strips / Galvanized Steel Wire Braid conforming to IS: 3975

Screen (If requested) : Over the bedded cores a layer of Aluminium/Copper Mylar Tape or Copper/Aluminium wire braid is applied to form the screen. Screening for cables depends on the type of application of the cable. Control cables if laid along with Power cables or MV cables or other cables having its magnetic filed can cause problem in transmitting the signal. Cable construction is as per IEC 60502 Part 1

Sheath : An extruded layer of PVC (ST1/ST2) is applied as the outer sheath conforming to IS: 5831: 1984. Sheath colour as per customer specification.

Customization
Other construction can be supplied on request :
  • FR [Flame Retardant PVC]
  • FRLS [Flame Retardant Low Smoke PVC]
  • Zero halogen/ Low Halogen Low smoke Cables : with polymeric insulation and sheath
  • High Temperature Cables : With ETFE/FEP/PTFE tape (wrap) insulation/sheath

Applications
These cables are suitable for control purposes or measuring circuits in generating stations, substations, industrial installations etc. On account of the armoring, the cables can withstand rough installation and operation conditions and tensile stresses. These can be laid in water or buried direct in the ground even on steep slopes. They can also be installed indoors or outdoors, in air or in cable ducts.

Technical Advisory Services
KCP’s staff includes specialist engineers with wide knowledge and decade long experience in the field of cables and their applications. This time tested technical expertise and experience is available to all the clients in the selection of appropriate cable design.

Current Ratings

The current rating of Armoured Cables Table & Unarmoured Cables Table is based on the normal condition of installation as described below :

Maximum conductor temperature 70o
Ambient air temperature 40o
Ground temperature 30o
Depth of laying (for cable laid directly in ground) 75 cm(1.1KV)
Thermal resistivity of soil 150o cm/watt
Thermal resistivity of cable 650o cm/watt
Max. short-circuit conductor temperature 160o
Max. ambient air temperature 55o

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Recommendations for Storage & Installation of Cables
For easy and convenient installation conditions, and desired performance, following recommendations are made :
  • No drums should be stored one above the other.
  • Drums should be stored on a plain ground without having any projected hard stones above the ground surface. The drums should be stored preferably in the shade.
  • Drums should be stored and kept in such a way that the bottom cable end does not get damaged.
  • Drums should be rotated only in the direction marked on the drum.
  • While laying the cable in a trench, the cable end should be pulled with a pulling eye only after mounting the drum on the jack.
  • 100% drums should be checked for continuity and cross continuity to ensure that there is no internal damage to the cable during transportation.
  • Insulation resistance should be measured with 500 V megger between the cores and all the cores to earth (Armour).
  • After the cable is installed, before commissioning, it should be tested for high DC voltage. The recommended volts and duration of the test between each core and metallic armour (earth) is 3 KVDC for 5 minutes. During High Voltage test, all the electrical equipment related to the cable installation must be earthed and adequate clearance should be maintained from the other equipments and from work, to prevent flash over.
  • Where the cable is to be joined with an existing cable, the sequence of cores at the two ends to be joined should be in the opposite direction i.e., if at one end it is in the clockwise direction, at the other end it should be in the anticlockwise direction. This is necessary to avoid the crossing of cores while jointing. This will also decide the direction in which the cable is to be pulled.
  • The minimum bending radius for cable should not be less than the values shown below. Wherever possible 25% higher value should be adopted. 8 x overall diameter: Single core cables as per table I, 12 x overall diameter: Multi-core cables as per tables II, III, IV, V, VI, VII & VIII
  • Avoid excessively high temperature when sealing joints of cable. Cool the sealant to about 1000C before pouring.



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