Everything You Need to Know About Heat Shrink Terminations Kits

Most of us may know about cable insulation- a method to insulate conducting cables so that the current or voltage doesn’t leak outside the insulated layer. However, in power distribution, heavy machinery and communication networks, only insulation doesn’t guarantee safety. The connections need to be secured by special methods so that the joints or terminal ends are joined tightly with cables. This can be done using various methods and devices. Heat Shrink Terminations Kits are one of the most reliable and secure tools for cable insulation and termination. In this blog, we will cover as many aspects of these kits for you to gain a comprehensive understanding of the topic.

What is Heat Shrink Termination Kit

Heat Shrink Terminations kits are a set of tools that terminate power cables by shrinking under the influence of high heat. These have significant value in LV, MV and HV applications because they ensure electrical insulation, protection against abrasion and wear, moisture, and prevent breakage under stress at the termination point. The heat-shrinkable material creates a seal around the cable when shrunk. These kits apply to PVC/XLPE/PILC insulated cables used in power distribution, industrial grid, telecommunication, and other low to high-tension systems.

The key benefits of these kits are:

➔      Reliable and long-lasting cable termination and insulation

➔      Resistance against corrosive elements like moisture, chemicals and UV rays

➔      Compact design and unlimited shelf life

➔      Ensures the industry complies with electrical safety norms

Inside Heat Shrink Termination Kits

Heat Shrink terminations kits usually contain an electrolytic conductor of 1-core, 3-core, and 4-core for various types of cables. In a standard kit, you will find:

●        Heat Shrink tubes that shrink on cable when heat is applied to them. These protect and seal the cable from environmental stress.

●        Stress control tubes distribute stress evenly and avoid failure due to concentration.

●        Lugs that connect cable conductors to the equipment or terminal distribution system.

●        Sealing Mastic creates a waterproof seal and enhances moisture resistance.

●        Anti-tracking tubes to resist surface current leakage, especially outdoors.

●        Cleaning wipes are used to clean the cable insulation before termination.

How Heat Shrinking Works

Here is a simple explanation of how heat shrink terminations kits work:

➔      Cable is stripped and cleaned with wipes.

➔      Lugs on the terminal or equipment, and the cable are attached.

➔      Sealing mastic is applied on the cable and termination point to relieve stress.

➔      The material is shrunk using a heat gun or gas torch, creating an insulating layer.

➔      In case of outdoor applications, anti-tracking tubes are installed.

➔      Ends are sealed to protect against moisture, water and heat.

Last Words

For using heat shrink kits for termination, it is important to consider compatibility and follow the instructions carefully. Although these are safe and reliable tools, only expert professionals should perform heat shrinking. To choose the right kit, professionals check the cable type, voltage class, no. of core conductors, and conductor size for the correct lug size. They also consider indoor and outdoor conditions. From power distribution in an industrial setting to a utility transformer, the heat shrink terminations kits are a versatile tool for ensuring safe cable connections.

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