Frequency converter with a housing consisting in an upper part and a lower part

摘要

A casing upper part (2) with cooling surfaces divides in two for separating the cooling surfaces and consists of a first cooling unit (3) with a high pick-up temperature and high heat exchange performance. A second cooling unit (4) has a lower pick-up temperature and lower heat exchange performance in relation to the first cooling unit. A power module (5) fits in a partitioned space (6) in the casing upper part next to the first cooling unit.