In the field of electrical engineering, managing high power levels requires equipment capable of operating under demanding conditions without compromising safety or performance. Oil-immersed transformers remain the preferred solution for medium and high-voltage power distribution and transmission, thanks to their exceptional insulation and cooling properties.
At EREMU, with a consolidated track record of over 60 years, we stand as leaders in the design, manufacturing, and repair of electrical transformers. Our specialization in dielectric liquid immersion technology allows us to offer robust equipment designed to maximize the lifespan of our clients’ electrical infrastructure.
Why Choose Oil-Immersed Transformers for Your Installation?
Unlike dry-type transformers, oil-immersed transformers utilize a dielectric liquid (mineral or vegetable) that serves a dual purpose: it acts as a superior insulator and a highly effective cooling agent.
This technology is ideal for:
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High Power Requirements: Equipment that needs to manage high thermal loads efficiently.
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Outdoor Installations: Their sealed design makes them perfect for outdoor substations, wind farms, and photovoltaic plants.
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Harsh Environments: Oil immersion protects the windings from moisture, dust, and corrosion.
Custom Design and Manufacturing at EREMU
At EREMU, we do not believe in one-size-fits-all solutions. We understand that every industrial or civil project has unique technical requirements. Therefore, our oil-immersed transformer manufacturing capacity focuses on total customization:
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Power and Voltage: We design units covering a wide range of needs, from distribution transformers to large power units up to 50 MVA and voltages up to 72.5 kV.
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Cooling Systems: We adapt the system according to the specific need (ONAN, ONAF, etc.) to ensure the equipment always operates within its optimal thermal range.
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Technical Configuration: Options include expansion tanks or hermetically sealed systems (integral filling), off-circuit or on-load tap changers, and advanced protection accessories.
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Sustainability: We offer the option to use biodegradable natural esters (vegetable oils), reducing environmental impact and increasing fire safety due to their high flash point.
Repair and Maintenance: Extending the Life of Your Assets
As experts in the complete product life cycle, EREMU does more than just manufacture; we are specialists in the repair of oil-immersed electrical transformers. We possess the technical means and testing laboratory necessary to rehabilitate equipment of any brand.
Our technical service offers:
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Diagnostics and Oil Analysis: Physicochemical and Dissolved Gas Analysis (DGA) to detect premature failures.
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Full Rewinding: Recovery of damaged transformers using superior thermal class materials.
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Preventive Maintenance: Cleaning, oil filtering, degassing treatments, and gasket replacement to prevent leaks.
Guaranteed Quality and International Standards
Every unit that leaves our facilities undergoes rigorous routine and type testing, ensuring compliance with the most demanding international standards (IEC, UNE, NEMA, ANSI, UL). This rigor ensures that EREMU transformers offer maximum efficiency, reducing no-load and load losses, which translates into direct savings in operating costs (OPEX) for the end user.
EREMU: Your Strategic Partner in Electrical Power
The combination of cutting-edge engineering, premium materials, and exceptional after-sales service makes us the ideal partner for your energy projects. Whether you need a new distribution unit for an industrial plant or an urgent repair of a power transformer, EREMU transforms energy with precision and expertise.
Optimize Your Power Supply with EREMU Experts
If you are looking for maximum reliability for your grid, explore our advanced solutions in immersed equipment. Our team of engineers is at your disposal to advise you on the equipment that best suits your technical and operational specifications.
Click here for full information on EREMU Oil-Immersed Transformers
