Contact arc-quenching system for power switchgear

A contact arc-quenching system of power switchgear, wherein

• a constant magnet (a disk one in particular) is positioned inside a stationary contact with outlet,
• and contact surface is in the shape of a ring (elongated ring) in the cylinder (rotating body) butt end, inside which an insulation arc-resistant insert is being positioned,
• a constant magnet is also positioned in the moving contact, hereby the contact surface of the moving contact is in the shape of a ring (elongated ring) in the cylinder (rotating body) butt end which is symmetrically positioned in relation to the contact surface of the stationary contact,
• with an insulation arc-resistant insert positioned in the butt end, in particular flush with the surface of the insulation arc-resistant insert, symmetrically to the insert of the stationary contact,
• hereby the magnets mentioned create the magnetic field, with the lines of force in the contact gap being directed perpendicular to the arc axis occuring with contacts breaking, thus causing arc rotation in the gap mentioned.

A contact arc-quenching system of power switchgear wherein

• a constant magnet, a disk one in particular, is positioned inside each of the two stationary contacts with outlets,
• and a contact surface is in the shape of a ring (elongated ring) in the cylinder (rotating body) butt end, inside which an insulation arc-resistant insert is being positioned,
• moving contacts form a contact bridge, and a constant magnet is positioned in each moving contact,
• hereby the contact surface of the moving contact is made in the shape of a ring in the cylinder(rotation body) butt end, symmetrically positioned in relation to contact surface of a stationary contact, with insulation arc-resistant insert being positioned in the butt end, in particular flush with the surface and symmetrical to the insert of a stationary contact,
• hereby each pair of the said magnets in each pair of stationary and moving contacts creates a magnetic field,
• with the lines o force in the gap of every contact pair mentioned directed perpendicular to the arc axis occuring with contact breaking causing arc rotation in the said gap of the corresponding pair of contacts.

A contact arc-quenching system of the power switchgear, wherein

• each of the two stationary contacts a cup-like magnetic circuit,
• inside each contact mentioned with outlets a constant magnet (e.g., a disk one) is being positioned,
• and contact surface is in the shape of a ring (elongated ring) in the cylinder (rotation body) butt end
• wherein an insulation arc-resistant insert is being installed,
• moving contacts form a contact bridge,
• hereby contact surface of a moving contact is made in the shape of a ring (elongated ring) in the cylinder (rotation body) butt end, symmetrically positioned in relation to the contact surface of a moving contact with positioning of an insulation arc-resistant insert inside the mentioned contact surface symmetrical to the insert of a stationary contact,
• hereby, each of the said magnets with its cup-like magnetic circuit creates a magnetic field,
• with the lines o force in the gap of every contact pair mentioned directed perpendicular to the arc axis occuring with contact breaking causing arc rotation in the said gap of the corresponding pair of contacts.