To operate the poles of HV disconnectors, either manually or electrically, we propose a complete range of mechanisms, suitable for our disconnectors, but also, with some minor adaptations, to switches of other manufacturers.

   Güral MD and HD series operating mechanisms offer the multiple features necessary to operate the pole either locally or remotely (MD), in the best condition of safety for the operator and the grid. They are designed to ensure the highest reliability over years, with the use of corrosion-free materials for the enclosure and external devices. The inner components are protected by the weatherproof cabinet IP 55 and by anti-condensation resistors.
   

   Güral MD series motor drives is the result of many years of continuous improvements in the field of reliability and easiness of use. MD series motor drives are manufactured in several types, the overall dimensions of the mechanism remains the same, in some special cases, optional accessories are installed inside the housing due to customer request.

   MD Series motor drivess can carry out the electrical operation of the driven device; by means of an electrical motor which drives a chain system driving the vertical mechanic load terminal shaft, or the manual operation of the device, by means of a crank to be inserted to excite the chain mechanism.

  MD Series motor drives are generally supplied to carry out 90º rotation on the mechanical load terminal shaft, but in some special cases due to customer request, the driving angle can be pre-adjusted for different angles.

   Integrating selected and tested components, it can operate within the standard IEC temperature range (-25/+ 40°C ), but also, upon request, down to -50°C and up to 50°C .

   The motor and auxiliary voltages can be chosen according to the available supply on the substation, AC or DC, from 110 V to 400 V.

   MD Series motor drives supplied by Güral are designed so as to ensure that they are required first maintenance after 1000 switching operations. All MD Series motor drive configurations are tested to satisfy IEC 60694.