CUBICLE SWITCHBOARD CABINET Russian patent published in 2010 - IPC H02B11/00 H02B13/00 

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering and may be used for operation in power plants of three-phase alternating current with frequency of 50 (60) Hz and rated voltage of 6 (10) kV. Cubicle switchboard cabinet (CS) with middle location of rolled-out element (RE) consists of rolled-out element compartments, linear, relay and busbar compartments. All compartments, apart from relay one, are equipped with pressure relief valves, at the same time line of pressure relief valves opening is arranged as perforated, and valve of linear compartment is located on back wall of cabinet and is arranged as bent along with perforation line towards the side of this compartment. Relay compartment is arranged with the possibility of its installation outside cubicle switchboard cabinet. Doors of rolled-out and linear elements compartments are equipped with lock devices and inspection windows, besides inspection windows are equipped with additional metal moving shutters, and doors are fixed in several points and controlled with a single handle, which serves both for their opening. Opening for key of RE motion into RE compartment doors is equipped with additional guide, and locking mechanisms are arranged on quick-detachable bottom of RE compartment. Protective shutters of shutter-lifting mechanism are made in the form of a single sheet with openings for passage of RE contacts, and shutter-lifting mechanism itself is equipped with additional blocking mechanism for provision of RE compartment door closed condition, when RE is located in rolled-in position. Current transformers in linear department are installed on additional frame so that their bases are located parallel towards bottom of linear compartment.

EFFECT: reduced dimensions, improved safety and simplified servicing of cabinet with proposed design.

2 cl, 9 dwg