Abstract: A transport device for transporting goods includes at least one track and at least one transport vehicle which is configured to travel on the track and to transport the goods. The transport vehicle has at least one vehicle-side or on-board drive for moving the transport vehicle relative to the track. In order to enhance the performance of the transport device in a simple and cost-effective manner, the track has at least one track-side or in-track drive for moving the transport vehicle relative to the track at least in sections.

Abstract: An electrical appliance for connection to a high-voltage grid has a housing which can be filled with insulating liquid and in which there is arranged a core with at least one winding. A cooling module for cooling the insulating liquid is connected to the housing via attachment lines. The electrical appliance is inexpensive and can be quickly transported and quickly set in operation on site, in that the novel cooling module is fastened to the housing by way of a hook connection.

Abstract: According to the method a temperature module is defined, simulating the thermal behavior in the electric motor (1), based on a multi-mass model. The rotational speed (n) and the current (i) for the electric motor (1) are continuously recorded as input parameters for the temperature model and at least one bearing power loss and/or bearing inner temperature (TIL1?), corresponding to a bearing (8,9), is continuously derived from the temperature model. A first warning signal (W1) is given when a computer-determined bearing power loss exceeds a given comparative value. Furthermore, a second warning signal (W2) is given when a computer-determined bearing inner ring temperature exceeds a given temperature difference (?T) from a corresponding computed bearing outer ring temperature (TAL1?). The thermal behavior of non-accessible components, in particular, the bearing (8, 9), can thus advantageously be determined by mere evaluation of the current (i) and the rotational speed (n).