Dongan has a full complement of three phase ventilated transformers from 3kVA to 300kVA We offer encapsulated three phase transformers from 3kVA through 9kVA and ventilated from 15kVA and up. Our enclosures are NEMA 3R without the addition of a costly weather shield as standard with only some exceptions at the smallest kVA which are indicated in the catalog. Our transformers can be wall mounted or floor mounted cabinet style depending upon the kVA rating. These are UL and CUL listed and are copper wound through 9kVA although we offer copper designs on any of the products in the catalog. Our aluminum wound transformers start at 15kVA and extend through 225kVA as standard off the shelf. Larger custom transformers are available. Aluminum windings connect to bus bar style terminations equipped with NEMA standard holes for compression style or ring terminals.

• UL Class 220C insulation system with 150C temperature rise at full load and a maximum ambient of 40C.
• NEMA Type 3R, ventilated, cabinet style, floor mount enclosure suitable for indoor or outdoor use. No extra rain shields required for outdoor use.
• Vibration dampening pads provide quiet operation.
• Wall Mounting brackets are available in sizes up to 75 kVA.
• Ground studs provided for bonding compatibility with both metallic and nonmetallic conduit.