What are Cable Joints?

As their name suggests, their role is to maintain the continuity of electrical cables over long lengths by joining them and thus, enable the transmission of electricity. Cable joints have to fit precisely and be robust enough to withstand factors like adverse weather conditions, current carrying capacity, connection voltage drop and compatibility of materials.

Cable joints can be of different types depending on the following factors -

  • Voltage - Voltage dictates if the cable joints are going to be of high, medium, or low voltage levels. The voltage level of the cable joint has to be of the same level as the cable. If the capacity of the cable joint is lower than that of the cable, then it will not work due to the high current carrying capacity and over voltage.
  • Insulation - The insulation of the cable joint has to be compatible with the insulation of the cable for the jointed cables to work properly. Depending upon the purpose of the cable and its insulation, cable joints can be either cold or heat shrinkable.
  • Cores - Cables can have single or a number of insulated cores. Cable joints need to have the same number of cores to work with the cables.
  • Structure - The manner in which cables need to be connected also determines the kind of cable joints that will be used. For example, if two cables are to be connected at a single point then a straight through joint will be used. If the main cable has to be branched, then appropriate branch cable connectors will be used. Structure-wise, cable joints can be straight through, T or Y-shaped, pot ended or with indoor or outdoor terminations.

At Compaq International, we make heat shrinkable cable joints, cold shrinkable cable joints, pre-moulded cable joints, heat shrinkaable cable terminations, cold shrinkable cable terminations, pre-moulded cable terminations and screened separable connectors.

Our range includes armoured, unarmoured, straight through and trifurcating heat shrink cable joints for up to 72.5kV capacity. Our cold shrink cable straight joints are suitable for 1 & 3 core polymeric insulated cables up to 36kV. Our pre-moulded (push on/slip-on) straight through joints work perfectly well for polymeric insulated cables up to 36kV.

Our range of heat shrink cable terminations can manage loads from 1kV to 72.5kV. Our cold shrink cable terminations are suitable for 1 & 3 Core Polymeric Insulated cables of up to 36kV. Our pre-moulded (Push On/Slip On) cable terminations can be used safely for polymeric insulated cables of up to 36kV.

Our Screened Separable Connectors are designed to connect single and three core polymeric cables to medium voltage switchgear, RMU and other equipment using bushings type "C" specified for 250A, 400A, and 630A up to 24kV. Click here to know more.