Abstract: A subrack assembly can be configured for use with a subrack that includes an installation space for electronic circuit boards, an air distribution duct, an air collecting duct, and a slot. A fan tray can be configured to be slidably and removably received in the slot and can include panel and support one or more electric fans. The panel of the fan tray can at least partly define a first air chamber within the fan tray, and, in cooperation with the subrack, can define a second air chamber within the subrack, with the panel separating the second air chamber from the first air chamber. The one or more electric fans can be configured to drive an air flow through the first and second air chambers, the air collecting duct, and the air distribution duct, to cool the electronic circuit boards within the installation space.

Abstract: A subrack assembly can be configured for use with a subrack that includes an installation space for electronic circuit boards, an air distribution duct, an air collecting duct, and a slot. A fan tray can be configured to be slidably and removably received in the slot and can include panel and support one or more electric fans. The panel of the fan tray can at least partly define a first air chamber within the fan tray, and, in cooperation with the subrack, can define a second air chamber within the subrack, with the panel separating the second air chamber from the first air chamber. The one or more electric fans can be configured to drive an air flow through the first and second air chambers, the air collecting duct, and the air distribution duct, to cool the electronic circuit boards within the installation space.

Abstract: A rack for electronic plug-in boards has board cages on the front and rear sides and at least one vertical backplane arranged between the board cages. The rack has an installation space provided underneath or above the board cages and into which fan modules can be horizontally inserted from the front side. A power supply module with an electronics unit supplies power to the backplane. The installation space continuously extends up to the region of the board cage on the rear side. The electronics unit is arranged in the region of the rear side of the rack underneath or above the board cage and defines the installation space toward the rear. The electronics unit is connected to the backplane by rigid electric conductors horizontally extending between the board cage on the rear side and the installation space parallel and at a distance from one another.

Abstract: A rack for electronic plug-in boards has board cages on the front and rear sides and at least one vertical backplane arranged between the board cages. The rack has an installation space provided underneath or above the board cages and into which fan modules can be horizontally inserted from the front side. A power supply module with an electronics unit supplies power to the backplane. The installation space continuously extends up to the region of the board cage on the rear side. The electronics unit is arranged in the region of the rear side of the rack underneath or above the board cage and defines the installation space toward the rear. The electronics unit is connected to the backplane by rigid electric conductors horizontally extending between the board cage on the rear side and the installation space parallel and at a distance from one another.