MODULAR CONTACT SYSTEM OF DISCONNECTORS AND SWITCHES Russian patent published in 2019 - IPC H01H1/00 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the electrical equipment. Modular contact system of disconnectors and switches contains fixed contacts in the form of upper 1 and lower 2 packages of buses and movable contacts in the form of modules of pairs of lamellae 4 located on both sides of each of fixed contact buses. Lamellae are fixed on the lower package of buses 2 of the fixed contact, on the axis of rotation 12, relative to the packs of buses 1, 2 of the fixed contact. System of pressing the movable contact to the fixed one is made in the form of two axes 6, bushings 7, disc springs 8 and screw fasteners. Each axis 6 of the clamping system is located in the holes of the lamellae against the upper and lower parts of the fixed contact. Disk springs 8 are fitted on axles 6 on outer sides of said lamellae while bushings 7 are fitted on one of axles arranged opposite the top package of fixed contact buses between lamellae of every pair. System of compression of disk springs 8 is installed on each end of axes 6 and is made in the form of screw fasteners. Modules are located between two fixing metal plates 9. Pairs of lamellae 4 have holes for installation of post 10 fastening them and fixing plates 9.

EFFECT: wider range of rated current values and providing reliability and stability of contact.

1 cl, 6 dwg, 1 tbl