Cable terminations are an essential part of power equipment and electrical transmission. Connecting multiple cables or terminating a cable at a certain point required discipline and perfect execution. The choice of termination also matters in this regard. For instance, the heat shrink cannot be used in oil refineries and gas handling facilities, but the cold shrink method is applicable there. Some of the applications require a special type of termination, such as gas-insulated switchgear (GIS). This is safety equipment used as a first line of defence against electrical faults in the high voltage environments.
GIS plug in termination is a special type of kit that is used specifically in this switchgear. In this blog, we are going to learn about its various aspects.
Why GIS Needs Plug-In Termination
Modern substations have limited space as they utilize the available footprint with maximum efficiency, especially in urban areas. They need to operate with high performance while being safe at the same time. Exposure to air for insulation is not practical for high voltage switchgears, so they use Sulphur Hexafluoride gas compressed inside sealed enclosures. Cable termination is essential here because external cables are connected with switches and busbars, and even the slightest compromise can cost heavily.
GIS plug in termination systems are prefabricated, and hence they do not depend on the on-site workmanship. The errors and risks of applying the shrinking method are eliminated.
How It Keeps Switchgear Safe
Here are the key functions of the GIS Plug In Termination that keep the switchgear safe:
Prevents Insulation Breakdown
Cable ends have a high stress concentration of the electric field, especially when connected to high-voltage gears. It can lead to heat generation and breakage of insulation. With reliable GIS plug in termination, the busbar and switching components are kept secure from leaking.
Eliminates Human Error
Plug in feature of this termination is the biggest advantage because it eliminates human error. While the other methods require the expertise of the installer, this termination acts as a connector between cables and bushings. It can simply be connected in the bushings of the switchgear. Moreover, it can be installed quickly because no filling or curing is needed.
Proper Sealing
Moisture ingress and contaminated air are the two damaging factors that weaken the insulation over time. With proper sealing created by the plug in termination, the cable ends are safe from external matter infiltrating the conductor path.
Accessible Testing and Maintenance
Modern power conditioning and safety equipment need monitoring and testing on a regular basis. With plug in feature of the terminations, these activities are made accessible for the technicians.
Conclusion
By ensuring stable electrical contact between cable and bushing, insulation safety and sufficient mechanical strength, the GIS Plug in termination plays an essential role in keeping the switchgear assembly safe for decades. It is a smart design that reduces the installation risk and time.
Yamuna Cable Accessories Pvt. Ltd. is a reliable provider of a vast number of terminations and joints. One can trust us for their specific needs, from low to high voltage power equipment.