Designs for Mounting Reed Switches in Vicinity of AC and DC Buses

Abstract

It is noted that the use of reed switches makes it possible to solve the urgent problem of building relay protection devices without current transformers. It is emphasized that for their fastening and regulation of the response parameters of these devices by changing the position of the reed switches in the vicinity of live buses, special structures are necessary. Four new designs are offered for mounting reed switches close to AC and DC buses. The first of them differs from the known ones by the availability of a clamp covering the bus, a plate on which n reed switches are fixed and a strap fastened with this clamp. The second one differs by a double ear clamp and two rotary arcs with ratchet drums with a reed switch. The third one differs by a L-shaped plate with reed switches and mounting angles. The fourth one differs by two rectangular beams with four through holes. The article describes how to control the parameters of protections tripping on the reed switches using these structures.