HORIZONTALLY MOUNTED ROTARY DISCONNECTING SWITCH Russian patent published in 2007 - IPC H01H31/30 

FIELD: high-voltage switching devices.

SUBSTANCE: proposed disconnecting switch that enables switching of two circuits running from first bus system through mentioned disconnecting switch and further to circuit breaker or from second bus system 2 through mentioned disconnecting switch and further to same circuit breaker has frame that mounts rotary and fixed insulating columns. Each of the latter carries current-carrying blade with segment or pin contacts and operating mechanism for turning at least one insulating column. Rotary insulating column carries two current-carrying blades disposed at angle of 120 ± 20 deg. relative to one another, as viewed from top; operating mechanism of disconnecting switch is designed to ensure following three positions of current-carrying circuits: (a) one current-carrying blade is ON; (b) both blades are OFF; (c) other current-carrying blade is ON.

EFFECT: simplified design of outdoor switchgear, primarily that using circuits with two service and one bypass collecting bus systems; ability of developing new switchgear circuits.

3 cl, 2 dwg