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Conventional single-phase overhead transformer
Eaton's Cooper Power series single-phase conventional overhead transformers are designed for exceptional performance. Available in ratings from 5-167 kVA, the transformers are designed with an interlaced core (5-50 kVA), which is recommended by the Electric Power Research Institute (EPRI). Conventional transformers meet or exceed the requirements of applicable ANSI and NEMA standards. Single-phase overhead transformers can be filled with standard electrical grade mineral insulating oil or fire-resistant Envirotemp FR3 fluid.
Available option of Envirotemp FR3 fluid for increased fire safety or electrical grade mineral oil
Meets or exceeds industry standards including ANSI, NEMA and DOE Energy Efficiency
Constructed with EPRI-recommended interlaced core-type design for greater resistance to low-side voltage surges
Polymer low-voltage bushings are standard at 5-50 kVA
Cores and coils designed for high reliability and low field failure rates
Domed cover design and formed cover band provide increased pressure withstand capability, eliminate bushing overhang and improve cover retention
High-voltage bushing design improves gasket protection and seal
Configurable to Rural Utilities Service (RUS)
Optimum field performance
Eaton's Cooper Power series transformer cores and coils are designed and manufactured to provide the most reliable performance and the industry’s lowest failure rate. Advanced quality management, combined with exhaustive testing, assures unparalleled reliability and operation.
The safer, environmentally friendly choice
Single-phase conventional transformers can be filled with optional Envirotemp FR3 fluid, which provides increased fire safety and superior environmental characteristics where less-flammable fluid is desired. Because the fluid is readily biodegradable and non-toxic, Envirotemp fluid provides sustainable performance at a low cost.
Conventional 50 or 60 Hz (5-167 kVA)
Primary voltage: 2400-34,500 V
Secondary voltage: 120-600 V
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
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.
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).
Eaton’s mission is to improve the quality of life and the environment through the use of power management technologies and services. We provide sustainable solutions that help our customers effectively manage electrical, hydraulic and mechanical power – more safely, more efficiently and more reliably. Eaton’s 2019 revenues were $21.4 billion, and we sell products to customers in more than 175 countries. We have approximately 101,000 employees.