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Os tipos de chave seccionadora em subestações de alta e extra alta tensão​

A chave seccionadora proporciona o isolamento do equipamento de uma fonte de energia, abrindo e fechando circuitos por meio de operação manual ou automática para ...
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A importância de realizar ensaio de resistência ôhmica de enrolamentos

Teste verifica a integridade do enrolamento, identificando possíveis problemas, como curtos-circuitos ou conexões soltas, garantindo que a resistência esteja dentro das especificações do projeto.  ...
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Detailed inspection records 836 anomalies in 105 km Transmission Line

COTESA Engenharia has concluded the detailed inspection of a 105 km long Transmission Line, with the inspection of 255 towers, 50% of which were climbed.
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COTESA Engenharia takes part in a wind sector fair

COTESA Engenharia participated in the 12th Brazil Wind Power, which brings together the main players in the national and international wind sector and promotes discussions about the next steps of the energy transition, the perspectives for a future ...
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Washing of insulator bays in substations

COTESA Engenharia washed two isolator bays in two 500kV substations, in an action that involved 11 employees and lasted five days.
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Corrective maintenance performed in Transmission Line

COTESA Engenharia carried out a programmed corrective maintenance service on two 525kV Transmission Lines. The service corrected anomalies detected during inspections.
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Inspection of 137 metallic structures concluded

COTESA Engenharia has concluded the detailed inspection with climbing of 137 metallic structures, with measurement of grounding resistance, thermographic verification and corrective maintenance.
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The Corona Effect on Transmission Lines

The Corona effect is the deformation of the electric field and occurs from the ionization of the air around an electric conductor, causing a luminous pop (bright noise). 
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COTESA Engenharia takes part in a wind sector fair

COTESA Engenharia participated in the 12th Brazil Wind Power, which brings together the major players in the national and international wind sector and promotes discussions on the next steps of the energy transition, the prospects for a future Net Zero (carbon neutralization), new technologies such as green hydrogen storage and regulation of the offshore wind market.
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