75kVA Three Phase VPI Dry Type Transformer 208V to 208Y/120V Class R Insulation NEMA 4X 304 Stainless Steel Enclosure DOE 2016 ANSI/IEEE Standards

This 75kVA three phase VPI dry type transformer is designed for commercial facilities, light industrial power distribution, marine duty electrical rooms, and protected indoor or outdoor installation points requiring 208V to 208Y/120V power conversion.

Built with a NEMA 4X stainless steel enclosure, Class R insulation, copper windings, and a Dyn1 vector group, this transformer supports stable low voltage distribution while helping buyers match North American project requirements for enclosure protection, thermal performance, and specification review.

With 208V Delta primary input and 208Y/120V Wye-N secondary output, the unit is suitable for applications requiring both 208V three phase loads and 120V line-to-neutral branch circuits. The DOE 2016, ANSI, IEEE, and NEMA ST-20 aligned design makes it a practical choice for commercial, marine duty, and light industrial transformer projects.

Technical drawings

Standard Features

• Bolted front access panel
  Front cover design supports inspection wiring and maintenance access
• Three phase coil assembly
  Three separate phase coils arranged inside the enclosure for compact dry type transformer construction
• Front accessible terminal layout
  Primary and secondary terminals are arranged toward the front for easier wiring and commissioning
• Color coded phase leads
  Red yellow green and blue phase identification helps reduce wiring errors during installation
• Insulated busbar and jumper connections
  Insulated connecting bars and jumpers support safe phase connection inside the cabinet
• Primary tap terminal structure
  Multi tap terminals are arranged on the coil front side for voltage adjustment and specification matching
• Core and coil clamping frame
  Black upper and lower clamping frames fix the core and coil assembly to improve mechanical stability
• Red base support brackets
  Bottom support brackets secure the transformer body inside the enclosure and help withstand vibration during operation or transport
• Grounding connection
  Internal grounding wire and grounding points support safe cabinet and transformer grounding
• Side conduit knockout holes
  Side cable entry holes support conduit or cable connection according to site installation requirements
• Stainless steel nameplate
  Nameplate provides key rating information such as capacity voltage vector group insulation class standard and enclosure rating