Guidance to Fiber Optic Cable Selection

Purchasing and understanding the differences between the fibre optic cables can get pretty confusing for certain people especially those who are used to the standard cabling systems or in general know nothing about the cables. However, as soon as you will get to know about the benefits of fibre Optic cable you will not be … Read more

Test for Thickness of Insulation of Power Cable

This test covers the technique to confirm the thickness of insulation and sheath of electric power cables. Adequate thickness of insulation and sheath is provided to power cable meet up the voltage stresses and mechanical stresses imposed on the cable during its service life. The measurement of such thickness is necessary to verify whether it … Read more

Electrical Power Cable

Electric power can be transmitted or distributed either by overhead transmission systems or by underground cables. Cables are mainly designed as per requirement. Power cables are mainly used for power transmission and distribution purpose. It is an assembly of one or more individually insulated electrical conductors, usually held together with an overall sheath. The assembly … Read more

Testing of Electrical Power Cable | Type Test | Acceptance Test | Routine Test

The following tests are type test of electrical power cable. Persulphate test (for copper ) Annealing test (for copper) Tensile test (for Aluminium) Wrapping test (for Aluminium) Conductor resistance test (for all) Test for thickness of insulation (for all) Measurement of overall diameter (where specified)(for all) Physical tests for for insulation and sheath Tensile strength … Read more

Annealing Test for Wires and Conductors

This test is normally carried on annealed copper wires, aluminum wires for welding cables and solid conductors of electric power cables. The current carrier conductors of power cable is subjected to twist and bend during laying and installation hence it should be flexible enough to take any desired bending and twisting without breaking and cracking. … Read more

Tensile Test of Conductors

This test is performed only to confirm tensile strength of aluminum wires used for conductor in electric power cables. This test is significantly performed on conductor material to judge the strength of this material. A cable conductor is often subjected to pull from one end during laying, installing and manufacturing hence it should be strong … Read more

Persulphate Test of Conductor

This test is done on tinned copper wire to determine the exposed copper. The tinning process of copper may not be perfect due to which there is possibility of formation of pinholes on the conductors, thereby defeating the purpose of application of tin. Why Copper Wires are Tinned? Tin acts as a barrier between copper … Read more

Wrapping Test for Conductors

This test is done on aluminum wire used as conductor in power cables to determine its ductility. Ductility of a conductor is nothing but the property of how easily it can be wound and twisted. Higher the ductility, easily the material can be wound and twisted without its breaking. This property plays the significant role … Read more

Conductor Resistance Test of Electrical Power Cables

This test is used to determine the DC resistance of copper or aluminum conductors. Resistance of a conductor tells us how easily a conductor allows the flow of current through it. Higher the resistance, lesser the current will flow though the conductor. Resistance of a conductor is influenced by conductor dimension and construction, conditions like, … Read more

Types of Overhead Conductor

Conductor is a physical medium to carry electrical energy form one place to other. It is an important component of overhead and underground electrical transmission and distribution systems. The choice of conductor depends on the cost and efficiency. An ideal conductor has following features. It has maximum electrical conductivity. It has high tensile strength so … Read more