EN
For many years—building designers and fire safety experts have considered the safety of buildings to be of paramount importance. The height and nature of high rise residential, commercial or mixed use developments necessitate the concentration of electrical services into restricted spaces. Consequently fire safety, operational reliability, and efficient use of space are critical to modern building design and, in particular to their electrical installations. Fire risk is considered too high for oil-filled types in these particular buildings, so suitable alternatives to such units including cast-resin dry types were provided for by the various Building and Fire Regulations enforced.
Jiangsu Ryan Electric Co., Ltd. as a Sino-US Joint Venture with Eaton (USA), manufactures the full range of cast resin transformers tailored to meet the demands of high rise buildings. The company is backed by more than two decades of global experience and holds certifications to IEEE, UL, CE, and ASTA standards.
Inherent Fire Safety and Self-Extinguishing Properties
The most important reason why a high-rise building will utilize a cast resin transformer is for safety reasons. In the event of a fault or exposure to external fire, the solid epoxy insulation, in which the coils are encapsulated under vacuum pressure, will not sustain combustion or produce toxic gases or smoke. This offers significantly enhanced safety as fire can then be contained and not allow it to spread into public areas, emergency exits and up through the entire building via an electrical room. Traditional oil-filled transformers contain large quantities of oil and when ignited pose a fire risk to the surrounding environment. The dry type cast resin transformers eliminate these risks by their self-extinguishing properties. Also, since the coils are completely encapsulated with epoxy, they are resistant to contamination from dust, humidity and pollutants which can cause flashover in oil filled or other dry-type transformers, thus improving operational reliability. Our state-of-the-art vacuum pressure impregnation (VPI) technology further enhances the dielectric strength and thermal stability of the resin to deliver a product that not only complies with but exceed industry standards for safety and operation within occupied premises.
Eliminating Fire Containment and Spill Risks
Building designers have to contend with significant restrictions in floor space on high rise building premises. Fire regulations for oil filled transformers dictate a fire resistant enclosure, including the provision of oil spill containment systems (oil catchment pit and an emergency oil retention system) or a sprinkler system within the electrical room. This means considerable capital expense and loss of valuable floor space.
Cast resin transformers contain no flammable oil, so there is no need forcatch basins, bunds or sprinkler systems. Jiangsu Ryan Electric’s cast resin transformers are dry-type units allowing for installation directly into electrical rooms, elevator halls, or on occupied floors within the building without requiring complex safety measures, therefore maximizing the effective use of floor space, reducing overall building cost and complexity.
Superior Performance in Confined and Ventilated Spaces
Electrical rooms on high-rise buildings are usually restricted to basements, mechanical levels, or rooftop penthouses which have limitations on space and ventilation. The cast resin transformer is ideal for these environments because its high heat dissipating capability allows them to operate with a much lower ambient temperature rise, permitting a much closer installation distance and reducing the ventilation requirements for a given output rating compared to oil immersed transformers. Moreover, the strong, compact, single casting construction of the epoxy-encased windings is inherently resistant to short-circuit forces and thermal shock. The Jiangsu Ryan Electric Co., Ltd. product line includes a comprehensive range of cast resin transformers from 10 kVA to 10 MVA and voltage ratings up to 36 kV, with custom designs to 132 kV.
Environmental Sustainability and Green Building Compliance
Growing concerns about environmental impact are leading to an increased interest in green building design with credits awarded in standards such as LEED, BREEAM, and WELL for the use of environmentally responsible building components. Cast resin transformers are the environmentally superior option in many high-rise applications as they contain no oil to contaminate the soil or groundwater in the case of an accident. Also, at the end of their service life, resin insulation systems can be safely recycled. Jiangsu Ryan Electric Co., Ltd.’s transformer systems are also highly efficient to deliver low energy usage over a building’s life. Jiangsu Ryan Electric Co., Ltd. environmentally-conscious practices start at our ISO 14001 registered factories. We go the distance from our precisely crafted components in our factories to rigorous quality testing at our CNAS-certified lab to make safe, environmentally-friendly cast resin transformer systems people rely on every day for major organizations including Microsoft and State Grid.