The bench testing rig is located in the Mechanical Engineering building of NTUA and allows for the testing of axial flux generators of power up to 9kW and maximum diameter of up to 1m. With the use of a 60 HP DC motor, a DC bi-directional drive and a tachogenerator, the axial flux generators can be driven at different and constant revolutions per minute (RPM). Different loads can be applied to the generators such as a grid-tie inverter for grid connection or a 12/24/48V battery bank for battery charging modes, along with a diversion load controller and resistive load. In addition, a three phase ohmic load of maximum power 3.3kW can be connected directly to the generator. A rotary torque transducer with a DAC card is used for measuring the mechanical power in terms of torque and rpm at the shaft of the generator, provided by the DC motor drive, and the electrical output of the generator is measured using an oscilloscope with current and voltage probes.