Unloading and placing a 90-ton transformer inside a tunnel using hydraulic jacks is a difficult process that requires specialized equipment and trained personnel. Cranes might be an alternative solution, but in this case they were impossible to use due to the limited spaces of the tunnel.
For the unloading and installation of the transformer, hydraulic jacks were used which can be controlled by special equipment and adapted to the limited space of the tunnel. Hydraulic jacks are capable of exerting great pressure and counterbalancing the weight of the transformer, thus allowing it to be securely mounted.
The execution of this procedure requires the attendance of qualified technicians who have experience in similar tasks. It is important to observe safe practices and appropriate methods to ensure the integrity of the transformer and the safety of personnel.
In cases where crane approach is impossible due to limited space or other factors, the use of specialized equipment such as hydraulic jacks is an effective alternative to perform such tasks.