COMTRAFO Transformers
Transformers, autotransformers and reactors, manufactured in insulating liquid with rated powers up to 250 MVA and voltage class up to 245 kV in accordance with ABNT NBR, IEC and ANSI / IEEE standards and other specific standards of all utilities and/or customers.
Power Transformer
Powers ranges from 5 MVA to 250 MVA
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HV: Class 7.2 kV, 15 kV, 25 kV, 36 kV, 72 kV, 145 kV and 245 kV
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LV: Class 1.2 kV, 7.2 kV, 15 kV, 25 kV, 36 kV, 72 kV and 145 kV
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Installation: Substations / Indoor/outdoor environments, normal or aggressive.
Main characteristics:
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HV and LV coils made from 99.99% pure electrolytic copper.
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Core made from grain-oriented silicon steel sheets, ensuring lower losses due to eddy currents.
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Box made of carbon steel, with surface treatment by abrasive blasting, anti-corrosion protection by primer application and final painting by flooding system.
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Drying of the active part in Vapour Phase, guaranteeing no humidity inside the equipment.
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Final assembly, closing and filling in a controlled environment.
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Final tests and reports.
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Insulated in mineral oil or special fluids (silicone oil, biodegradable vegetable oil.)