HIGH-VOLTAGE ARC-EXTINGUISHING CHAMBER Russian patent published in 2015 - IPC H01H33/00 

FIELD: electricity.

SUBSTANCE: high-voltage arc-extinguishing chamber camera contains coupled insulating walls forming among themselves an input slot in the arch pre-stretching zone, arc-extinguishing devices in the arc-extinguishing zone, the top and bottom horns, two magnetic poles, the punched insulating plate inserted into a groove at the chamber output. The coupled insulating walls are pressed each as a single piece of separately located different arc-extinguishing materials, and the arc-extinguishing devices are designed as a lattice with the plates which have wedge-shaped cuts, begin from two different levels and at coming into this lattice the arch is split into short sections in two steps and dies away in the chamber, having no time to heat its coupled walls.

EFFECT: improvement of the disconnecting ability of contactors and decrease of switching over-voltages.

6 dwg