Download document () of 20
Clear selection
Download selection
Australia Select your location
Submit form in new Tab
We make what matters work*
Submit form in new Tab
Products
Services
Markets
Support
Company
MyEaton
Quick links

Medium-voltage transformers

blank_pim

Contact me about this solution
Back to search
kVA
5-167 kVA
Primary voltage
2400-19,920 V
Secondary voltage
120-600 V

Core features

Internalised protection for installation cost savings

Transformers can be deployed with a variety of protection options, including a MagneX interrupter or a secondary breaker with weak link for secondary fault and overload protection; a primary weak link fuse; a current-limiting fuse for high interrupting ratings and limiting fault currents; a low-voltage, distribution class MOV arrester; and internal or external lightning arresters. These protection options eliminate the need to install external overcurrent devices and simplify power restoration.

Available with multiple fluid options

For fire-sensitive locations, Envirotemp FR3 fluid is recommended in transformers. The fire-resistant, natural ester-based fluid also offers the benefits of a soy oil-based dielectric coolant that is sustainable and has unique environmental and material properties. Transformers may also be filled with standard electrical grade mineral insulating oil.

Enhanced protection with optional MagneX interrupter

Eaton's Cooper Power series MagneX interrupter is an overcurrent protective device that protects distribution transformers from damaging overloads and secondary faults, and is also used for switching the transformer “on” or “off”. As a transformer protective device, the MagneX interrupter combines safety and efficiency with economic operation. It is designed for use in transformer (mineral) oil or Envirotemp FR3 fluid-filled transformers.
Specifications

Ratings

  • Completely self-protected 50 or 60 Hz (CSP 5-75 kVA)
    • Primary voltage: 2400-19,920 V
    • Secondary voltage: 120-600 V
  • MagneX interrupter-protected 50-60 Hz (5-167 kVA)
    • Primary voltage: 2400-19,920 V
    • Secondary voltage: 120-600 V

Specifications

  • Meets or exceeds ANSI, NEMA and DOE2016 standards
    • IEEE, C57.12.00, C57.12.20, C57.12.31, C57.12.35, C57.12.90, C57. 91 and C57.154
    • NEMA standards, NEMA TR 1 (R2000)
    • Department of Energy Efficiency Standard, 10 CFR Part 431
  • Tank coating exceeds IEEE Std C57.12.31-2010 standard
  • Cover with a minimum dielectric strength of 8 kV
  • Envirotemp FR3 fluid or electrical grade mineral oil
  • Heavy-duty lifting lugs and hanger brackets per ANSI requirements, up to 4500 lbs
  • The transformer shall be designed in accordance with this specification and shall have an average winding rise (AWR) of one of the following:
    • 55 °C, 55/65 °C, 65 °C
    • The applicable AWR rating shall be specified on the inquiry
  • The transformer shall be designed in accordance with this specification and shall have one of the following kVA ratings:
    •  5, 10, 15, 25, 37.5, 50, 75, 100, 167
    • The applicable kVA rating shall be specified on the inquiry
  • Quality System ISO 9001 certified
Download Links
  • Commercial and industrial medium-voltage electrical distribution products brochure
    This brochure outlines Eaton’s Cooper Power series broad commercial and industrial medium-voltage transformer, switchgear, fuse, sectionalizer, switch, regulator, tool, OEM equipment, cable accessory, lightning arrester, power capacitor and recloser offerings.
    (PDF 2 MB , 24/01/2023)
  • Storm season rapid response information
    Eaton’s Cooper Power series product team works together with the engineering services team to provide a full storm response procedure to quickly ramp up operations in anticipation of storm impact for fast product shipment and remediation of damaged apparatus during storm recovery.
    (PDF 619 KB , 25/07/2019)
  • Single-phase overhead transformers catalog
    This catalog provides ratings and ordering information for Eaton’s Cooper Power series single-phase overhead-type distribution transformers which are available as conventional (5-167kVA), completely self-protected (CSP 5-75kVA) or MagneX interrupter-protected (5-167kVA).
    (PDF 150 KB , 01/08/2015)
X
Download Close

Related products

Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
Company
Quick links
© 2025 Eaton. All Rights Reserved.