Hitachi Dry Transformers<\/strong><\/figcaption><\/figure>\nVPI transformers are versatile in their applications, available in a range of power capacities from 5 kVA to 30 MVA<\/strong>. They are offered with two levels of insulation\u2014class F (155\u00b0C) and class H (180\u00b0C)\u2014and can be equipped to meet up to IP56 standards for ingress protection, which guards against dust ingress and powerful water jets, further asserting their suitability for harsh operational environments.<\/p>\n<\/span>Cast Resin Dry Type Transformer (CRT)<\/strong><\/em><\/span><\/h4>\nThe Cast Resin Dry Type Transformer (CRT)<\/strong><\/span> employs a distinctive encapsulation method where both primary and secondary windings are encased in epoxy resin. This encapsulation serves as a robust barrier against moisture, dust, and corrosion\u2014common environmental threats that can degrade insulation and diminish performance.<\/p>\nOptimized for durability and safety, CRTs are particularly advantageous in settings prone to high humidity, such as indoor areas, and locations where fire risks are a concern. The non-hygroscopic and non-flammable nature of the resin, coupled with the maintenance-free design of these transformers, ensures a stable, efficient operation. CRTs are also designed to handle electrical overloads and partial discharges effectively, while maintaining low operational losses. This combination not only boosts the overall efficiency but also significantly extends the service life of the transformers.<\/p>\n
These transformers are available in a range of capacities, from modest 25 kVA models suitable for smaller facilities, up to large 12,500 kVA units ideal for extensive industrial applications. They come with an insulation class of F, allowing for a temperature rise of up to 90\u00b0C, which further underscores their robustness and adaptability in varied environmental conditions.<\/p>\n