LT – XLPE Cable Operating Characteristic

  • Max. Conductor Temperature for continuous operation :90°C
  • Ambient Air Temperature : 40°C.
  • Standard Ground Tempreture : 30°C.
  • Thermal Resistivity of soil : 150°C Cm/Watt
  • Thermal Resistivity : 150°C Cm/Watt
  • Depth of Laying ( for Cables laid direct in ground ) : 75Cm
  • Minimum Bending Radius ( for Multi Core Cables ) : 12D ( D-Dia of Cables)
  • Max. Conductor temperature during short circuit : 250°C.
  • Max. Abient, Air temperature : 85°C
  • Type of installation :
    • 3 Core Cable – Installed Independently
    • Single Core Cable -Three Cores in Trefoil Touching each other
LT – PVC Cable Operating Characteristic
  • Max. Conductor Temperature for continuous operation : 70°C.
  • Ambient Air Temperature : 40°C.
  • Standard Ground Tempreture : 30°C.
  • Thermal Resistivity of soil : 150°C Cm/Watt
  • Thermal Resistivity of PVC : 650°C Cm/Watt
  • Depth of Laying ( for Cables laid direct in ground ) : 75 Cm
  • Type of installation :
    • Multi Core Cable – Installed Single
    • Single Core Cable- Three cables in Trefoil Touching each other
LT – AB Cable Application

‘DYNAMIC’ LT-AB (Aerial Bunched) Cable is a very novel concept in Overhead Power Distribution. When compared with conventional bare conductor overhead distribution system, AB Cable provides higher safety, reliability, lower power losses and ultimate economy by reducing installation, maintenance and operative cost. This superior system is ideal for rural distribution and specially attractive for installation in difficult terrains such as hilly areas, forest areas & coastal areas etc. These cables are designed, manufactured & tested conforming to IS:14255 & other International Specifications.

AB Cable is also considered to the choice for power distribution in congested urban areas with narrow lanes and by-lanes. In developing urban complex AB cable is a better choice because of its flexibilty for re-routing as demanded by changes in urban development plan.

LT – AB Cable Convenint Usage
  • In electricity theft prone areas.
  • As replacement bare lines in rural areas, in woods and in other localities & narrow street with limited space.
  • As replacement of bare lines where liability of supply is of prime importance.
  • As replacement of bare lines where high degree of stability of supply voltage is of importance.
  • In hilly terrains where cost of errection of overhead lines or under ground cable becomes very high.
  • As reinforcement of exisiting system without incressing voltage / cuurent capacity
  • For temporary supplies.
LT – AB Cable Advantages

In comparison with bare overhead distribution line, AB Cable has very high reliability in maintaining services because power and neutral conductors are insulated with the best dielectric, resulting in the following advantages:

  • Less fault rate on account of good protection against line and ground fault by high winds or falling trees or birds specially in hilly areas & forest as encountered in Rural distribution networks.
  • High insulation resistance to earth in all seasons and polluted atmospheres. Negligible leakage currents and low losses.
  • Multiplexer circuits of power and telephone cables could be strung in the same set of poles of any other support like walls.
  • Better adaptability to run concurrently with existing overhead bare conductor system without any interference.
  • High capacitance and low inductance leading to low impedance of lines.
LT – AB Cable Advantages
  • Lower voltage drop, higher current carrying capacities vis-a-vis better voltage regulation.
  • Longer spans and longer distance lines are possible with better system stability.
  • AB cables are much safer than bare conductors.
  • It can be over hung in dense vegetation and forest areas.
  • Additional connections can be easily and quickly made with hot line connectors.
  • Overall lines cost is reduced.
  • Maintenance is very convenient.
  • Very difficult to tap the AB Cables, thus reducing theft which leads to lower distribution loses.
  • Since, the tension from the current carrying conductor is totally removed by introduction of 00 messenger wire the operating temperature of the conductor is 90°C as against 75°C of the bare conductor under tension thereby allowing AB Cable to carry current equivalent to that of bare conductor of the same size.