H ELECTRICITY
H02 GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K DYNAMO-ELECTRIC MACHINES
5/00 Casings; Enclosures; Supports
H02K5/04 Casings or enclosures characterised by the shape, form or construction thereof
H02K5/20 with channels or ducts for flow of cooling medium
H02K5/203 specially adapted for liquids, e.g. cooling jackets