One of the goals in the development of e-machines is to increase the efficiency of the overall system. To achieve this, non-electrical losses, such as friction and hydrodynamic losses from oil lubrication, must be minimized. In order to determine the influence of design changes to the electric motor on the losses at an early stage of development, a simple and cost-effective test bench with low personnel requirements is needed. For this purpose, the development test bench for high-speed drives at the FKFS has been equipped with a new automation system that determines the required characteristic curves fully automatically. It also has various communication interfaces such as CAN or Profibus to interact e.g. with a residual bus simulation or a conditioning unit. Speeds of up to 24,000 rpm and highly precise drag torque measurement of up to 5 Nm can be covered. Sensor interfaces for type K temperature measurement as well as 4-20 mA and 0-10 V inputs and digital and analog outputs are also available. The development test bench for high-speed drives is therefore ideal for quickly determining the effect of design changes and their influence on losses or other properties such as vibrations or thermal behaviour.