Hitachi Energy’s dry-type distribution transformers deliver oil-free, fire-safe, and low-maintenance power solutions for modern energy systems. Our portfolio includes advanced technologies such as Vacuum Cast Coil (VCC), RESIBLOC® transformers, and open-wound designs, available in high-voltage configurations up to 72.5 kV.
These transformers are ideal for urban infrastructure, industrial facilities, schools, hospitals, and environmentally sensitive areas, where safety and reliability are paramount. With benefits like elimination of oil-related risks, lower maintenance costs, compliance with IEC and ANSI standards, and recyclable components, they support both operational efficiency and sustainability goals. Backed by over 40 years of innovation and 40,000+ global installations, Hitachi Energy combines proven performance with cutting-edge technology to deliver safe, sustainable, and future-ready power distribution solutions.
Why choose Hitachi Energy for Dry-type Distribution Transformers
World’s largest installed base in distribution and traction transformers
Global footprint and supply chain ensure seamless support and reliable backup capacity to our customers
Constant investment in R&D for Distribution and Traction Transformers
Committed to safety, quality, and sustainability in every product and solution
The most comprehensive transformers' portfolio in the industry, with transformers available that comply with global and regional/local standards for any application
Frequently Asked Questions (FAQs) about Dry-type Distribution Transformers
Looking for more details about Hitachi Energy’s dry-type distribution transformers? Below are answers to common questions about voltage ratings, technology options, safety standards, and application benefits to help you make informed decisions.
Hitachi Energy offers a full range of dry-type transformers with primary voltages up to 72.5 kV. We have successfully designed and installed units that can withstand 100 kV/550 kV Basic Impulse Level (BIL), ensuring robust performance for demanding applications
Dry-type transformers are oil-free, eliminating risks of oil leaks and fire hazards. All components are in solid form, meaning they have no flash points and do not require bushings, which removes major causes of fire and spillage. Additionally, most insulating materials are recyclable, supporting sustainability goals.
Yes, both technologies are available:
- RESIBLOC®: Mold-free casting for maximum design flexibility, non-explosive, highly flame-resistant, and does not require vaults or costly fire suppression systems.
- Vacuum Cast Coil (VCC): Ideal for humid or polluted environments, with the ability to produce oval or round-shaped core and coil assemblies for optimal space utilization.
Absolutely. Hitachi Energy’s dry-type transformers are virtually maintenance-free and manufactured in compliance with ISO 9001, IEC, and fire safety standards, ensuring reliability and environmental responsibility.
You can download technical specifications using the library widget located above the FAQs section. You can also submit inquiries through our contact form. Our team will respond promptly to assist you.
Something caught your eye?
Our sales team will get in touch with you