Exothermic welding exceeding the requirement of earthing installation
Posted by jmv001 on December 8th, 2018
Earthing or a lighting protection installation is setup for a complete protection from electrical faults. Electrical faults include – electrical surges, electrical overload, short circuits, etc. which has brought things to an alarming level that can obstruct the smooth functioning of electrical/ electronic devices. Earthing is simply an installation to prevent the electrical faults from entering theses sensitive devices and in turn protecting the person and his assets.
Maintenance free earthing system involve the use of conductors, earth enhancement compound and relevant connecting techniques to provide a path for these electrical faults to the conducting part of the earth. Numerous joints are required to be made underneath the earth and also above the ground. This is a section majorly left unnoticed. Connection of two or more dissimilar conductor can be done by means of conventional or advanced methodologies.
There are various methods available to establish connections including – crimping, brazing, bolting, and compression techniques, etc. which does not ensure a long term fix as it may break or get loose with short span of time. When in case of reliability and longevity, Exothermic welding is the right pick that leads to creation of a joint with 100% contact surface. You can create any form of joint namely- Straight joint, Tee joint, parallel joint, cross joint, etc. utilizing exothermic welding kit. Connection being proper is a mandate to every protective circuit as the connection failure or accidental disconnection can lead to catastrophes.
For the rail welding in the railroad constructions, exothermic welding system is the only method that can assure rail safety. The casting is done in a purpose made graphite mould. The mould is prepared as per the dimension and the type of joint that is to be made. The conductors are cleaned using the brush to remove the moisture and then they are well aligned inside the mould to enhance the quality of the joint. Further, the mould is filled with welding powder that melts and forms a stronger and long lasting connection offering high current carrying capacity. Being a permanent solution, they do not corrode or get loosen. The method is highly recommended as connection making and the inspection process is quite simple and quick.