Envirotran Hardened Data Center (HDC)Transformer


Eaton’s Cooper Power series liquid-filled transformers have efficiently and reliably served more than 750MW of critical data center capacity for more than 4,000,000 hours without an hour of downtime. On the heels of this record, Eaton continues to raise the bar in transformer design, providing ultimate reliability. The company’s Envirotran™ HDC (Hardened Data Center) transformer is designed with special attention to surge protection, providing superior performance under the most stressful electrical environments. The transformer surpasses dry-type transformers in every performance category; reliability, fire safety, loadability, operational life, efficiency, thermal loading, and installed footprint.

kVA 45-10,000
Primary Voltage 2400-43,800 V
Secondary Voltage 208Y/120 V to 24,940 V


  • Bolted cover for tank access (45-1000 kVA)
  • Welded cover with handhole (1500-7500 kVA)
  • Three-point latching door for security
  • Lightning arrester mounting provisions (live-front)
  • Laser-scribed anodized aluminum nameplate
  • One-inch drain valve with sampling device in low-voltage compartment (45-7500 kVA)
  • One-inch upper fill plug
  • Automatic pressure relief device
  • 20" Deep cabinet (45-1000 kVA)
  • 24" Deep cabinet (1500-7500 kVA)
  • 30" Deep cabinet (34.5/19.92 kV)
  • Removable sill for easy installation
  • Steel divider between high-voltage and low-voltage compartments
  • (15, 25 kV) 200 A (HTN) bushing wells
  • (15, 25, 35 kV) 200 A Integral bushings (dead-front)
  • Cooper electrical-grade wet-process porcelain bushings (live-front)
  • Lifting lugs (4)
  • Stainless steel ground pads (45-500 kVA)
  • Stainless steel NEMA 2-hole ground pads (750-7500 kVA)
  • Stainless steel cabinet hinges & mounting studs

Envirotemp™ and FR3™ are licensed trademarks of Cargill, Incorporated.