FIELD: semiconductor converter engineering. SUBSTANCE: common heat sink and case base of semiconductor converter unit carry semiconductor power modules with insulating bases, automatic control unit with insulating base, and current-conducting buses together with terminals for connecting input and output circuits of converter unit; all of them are mounted in panel also functions as unit cover; ratio of height $$$ between lower projection of cover and lower plane of conducting bus contacting upper plane of semiconductor power module current lead to height He between power module plane contacting heat sink and upper plane of power module current lead is at least 1.095; ends terminals are closed with separate lid made of insulating material; space between cover and base of converter unit is filled with silicone or any other compound. EFFECT: improved design. 2 cl, 2 dwg
