Replaces two main drives

The plant operator required a spare motor for two existing high voltage slip ring motors: the main drive for the raw mill and the drive for the raw mill fan. While these systems have similar performance ratings (3000 and 3500kW) and are both designed for a rated voltage of 6000V, they have different sizes, shaft measurements,  rotational directions and terminal boxes locations.

As a solution, Menzel designed a slip ring motor with two different shaft ends, terminal boxes that are connected in parallel for stator and rotor connection on both sides, and suitable adapter plates and frames to adjust the motor sizes and mounting dimensions.