The Cotesa Engineering carried out the general maintenance sexagesimal frequency of Extra High Voltage equipment that makes up the transmission facilities of the SIN basic network, in compliance with the minimum maintenance requirements established by Aneel.

In total, 65 pieces of equipment underwent preventive and predictive maintenance, such as autotransformers, reactors, circuit breakers, isolating switches, current transformers, cubicles and lightning bolts.

The activity consisted of planning interventions with the involvement of engineering and maintenance teams, where the activities to be performed were defined, according to the maintenance policy.

For the execution of activities by the maintenance and engineering team, the work was separated into four interventions, divided into two stages of 10 hours per day, with the presence of 18 professionals, including maintenance technicians, electricians and engineers.