Patent ID: 8448505

Claim:
A test bench for testing a test specimen, comprising: a load device comprising: two support devices spaced apart from one another; a load shaft supported by the two support devices and operable to be connected to the test specimen; a stator having a stator winding; and a rotor disposed on the load shaft and operable to rotate in the stator; and a blower device operable to cool the load device comprising: a speed control device; and a blower motor having a blower motor control device, the speed control device being operable to change a speed of the blower motor, the blower motor control device comprising: a first temperature sensor disposed in the stator winding and being operable to generate a measuring signal; and a control unit operable to carry out a control measure that actuates the speed control device as a function of the measuring signal and based upon a control provision in the form of an allocation of the speed of the blower motor and of a temperature measured by the first temperature sensor.