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Envirotran hardened data center substation transformer

Eaton’s Cooper Power series Envirotran Hardened Data Center (HDC) three-phase substation transformer provides superior performance and surge protection even in stressful electrical environments. Designed and built around superior efficiency and reliability, substation HDC Transformers can be utilized in both indoor and outdoor applications, stepping down a wide variety of distribution system voltages while meeting an extensive array of complex data center needs including relaying protection, advanced monitoring and VFI fault protection.  

Envirotran hardened data center substation transformer
Base rating
300 kVA to 12,000 kVA
Primary voltage
2400-46,000 V (Delta or Wye connected)
Secondary voltage
208Y/120 V to 14,400 V

Core features

  • Not reliant on a RC snubber circuit for transient surge protection
  • Readily biodegradable and non-toxic Envirotemp FR3 fluid provides sustainable, highly efficient performance at a low cost
  • Provides overload capability above nameplate without significant loss of life
  • Higher BIL and more optimum resonant frequency prevent damage from potentially harmful switching overvoltages
  • UL Classified, FM approved and NEC compliant for indoor applications that meet a wide variety of commercial, industrial and utility needs
  • Seismic rated available

Unparalleled combination of reliability, efficiency, safety and performance

Eaton's Cooper Power series HDC substation transformers offer superior technology with reduced operating costs, improved power usage effectiveness (PUE), increased fire protection and operational life.

Are snubbers required with Eaton’s Cooper Power series liquid-filled hardened transformers?

Studies have shown that Eaton’s Cooper Power series hardened substation transformers do not require snubbers to protect against transient switching voltages.

Superior overload protection

The cooling system and enhanced BIL of Envirotran liquid-filled transformers provides superior protection from severe overloads above base nameplate rating without significant loss of life.

Optimize efficiency, reduce operating expenses

Envirotran HDC transformers can reduce HVAC operating expense to cool transformer by as much as 40%.

Save space and reduce equipment coordination

Close-couple medium-voltage liquid-filled transformers with low and medium-voltage assemblies in a streamlined unit substation design.