High/medium voltage electrical equipment`s e.g. circuit breaker, casing, has upper and lower half shells connected with each other and assembled with each other by their edges and by thermal welding, where shells are made of polyamide

摘要

The casing has two half-shells, namely upper half shell (40) and a lower half shell (50), connected with each other. The shells are made of thermoplastic material e.g. aromatic polyamide, and are assembled with each other by their edges and by thermal welding. The upper half-shell has a tube (46) to permit the filling of an electrical equipment with dielectric gas. Three conducting bars corresponding to three connection phases of the equipment conveys electric current inside the equipment.