These equipments incorpore solid type regulating technologies, allowing them to work without controverter groups and dissipation resistance, common in previous equipment. This allows to obtain compact, economic and trustworthy equipment.

They are continuous service equipment , but with high accuracy. The regulation takes place by tiristores to 2 or 4 quadrants (2 rotation ways , drag and/or slow down). The torque measurement takes place by the total reaction of the balanced stator on an extensometric load cell .

In order to increase the precision in the Torques reading, , the ventilation takes place by an outer independent ventilator. A simple and precise calibration can be carried out by means of handle and counterbalance.

These machines are specially builded in their mechanical and electrical aspects to reach high speeds of turn in relation to their size, taking special care of the commutation and the dynamic balance.