| 摘要 |
<p>The motor (10) has a motor housing (11) sealed against the environment and made of a material having good thermal conductivity, such as aluminium, which is provided with external screens made from an electrically non-conductive material. Flow gaps (40) for cooling air extend between a housing middle part (12) and its external screen. The external screens consist of housing caps (33, 34) which extend over the frontal end shield (13, 14) of the motor housing and of a casing (35) arranged between these housing caps which prolongs the housing middle part as an external screen thereby forming the flow gaps (40) for cooling air. The external screen of the entire motor housing (11) prevents the user from touching any metallic or current-carrying parts of the motor.</p> |
