Shalaginov A.A.

At present, due to the depletion of the natural resources of silver (generally used for coating contacts in electrical equipment) and the increasing capacities of the power-consuming industries that require more and more heavy-current contact systems (which adds to the shortage of silver), the production of heavy-current contact systems with non-silvered contacts is a live issue.

The present work offers new designs for electrical equipment heavy-current contact systems with non-silvered contacts. For electrical contact connections of a new type, composite liquid-metal contacts are used. Among other things, heavy-current liquid-metal contact systems have a number of advantages, such as lower consumption of liquid metal, considerable energy savings, higher switching capacity, simplified operation of the drive mechanism, and slightly modified constructions as compared with the existing electrical equipment.

The designs of heavy-current contact systems for electrical equipment presented in this work are protected by patents of Russian Federation.