Abstract: The invention relates to an equipment box for a power converter which includes a rear wall with vertical cooling ribs on the outside and having a planar surface on the insides upon which electrical components can be mounted. The box further has base, top and side walls and at least one conductor plate arranged on a component carrier which is pivotally mounted internally of the box. The side walls are pivoted to the rear wall by hinges, formed by a vertical groove on one wall and a rib engaged therein on the other wall. In this construction use is made of the fact that the rear wall with its cooling ribs constitutes a very stiff constructional element. The side walls can be mounted on it directly and, by reason of the pivotable arrangement, the side walls can be accurately positioned to be at right-angles to the rear wall. In this position they are then fixed by the retaining wall and tolerance variations which are unavoidable in walls of large area will not lead to stresses in the finished housing.

Abstract: The invention relates to a housing assembly for electrical equipment which provides for the efficient removal of heat produced by high heat producing electrical components. A perimeter wall has the usual external cooling fins. A divider wall arrangement for forming two or more enclosed spaces provides vertically extending flue passages to create a chimney effect. The divider wall arrangement allows components to be mounted on both sides thereof.