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Medium-voltage transformers

Conventional single-phase pad-mounted transformer

Eaton’s Cooper Power series single-phase conventional pad-mounted transformers are designed for exceptional performance. Available in ratings from 10-167 kVA, the transformers are available in MaxiShrub (ANSI-Type 1), Shrubline (ANSI-Type 2) and Ranch Runner designs to meet various applications. Conventional transformers meet or exceed the requirements of applicable ANSI and NEMA standards. Single-phase, pad-mounted transformers can be filled with standard electrical grade mineral insulating oil or fire-resistant Envirotemp FR3 fluid.

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Primary voltage
MaxiShrub: 2400-34,500 V; Shrubline: 2400-19,920 V; Ranch Runner: 2400-14,400 V
Secondary voltage
120-600 V
kVA
MaxiShrub and Shrubline: 10-167 kVA; Ranch Runner: 10-50 kVA

Core features

  • Available option of Envirotemp FR3 fluid for increased fire safety or electrical grade mineral oil
  • Meets or exceeds industry standards, including ANSI (except Ranch Runner frontplate), NEMA and DOE energy efficiency standards
  • Cores and coils designed for high reliability and low field failure rates
  • Overcurrent protection includes a standard bayonet fuse and an optional current-limiting fuse or weak link
  • Tin-plated high and low-voltage bushing terminals to accommodate aluminium or copper conductors

Perfect for industrial and residential applications

MaxiShrub (10-167 kVA), with an ANSI Type-1 frontplate is ideal for single-phase industrial and residential applications where a wide range of kVAs or heavy cabling is required. The transformer allows vertical feed to the primary and secondary bushings.

Low-profile Shrubline combines safety and aesthetics

Ideal for high-profile areas, Shrubline (10-167 kVA) with an ANSI Type-2 frontplate offers a low-profile design that blends with surrounding shrubs, hedges and home air conditioners, making it a popular choice for residential applications.

Powerful capabilities in less space

The compact design of the Ranch Runner pad-mounted transformer (10-50 kVA) provides standard capabilities in very little space. Ideal for irrigation, oil field or residential applications, Ranch Runner is Rural Utilities Services (RUS) approved and meets all ANSI and CSA/CEA requirements, except frontplate arrangements.

The safer, environmentally friendly choice

Single-phase conventional transformers can be filled with our 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 provides sustainable performance at a low cost.
Specifications

Ratings

  • MaxiShrub 50 or 60 Hz (10-167 kVA)
    • Primary voltage: 2400-34,500 V
    • Secondary voltage: 120-600 V
    • ANSI Type-1 frontplate
  • Shrubline 50 or 60 Hz (10-167 kVA)
    • Primary voltage: 2400-19,920 V
    • Secondary voltage: 120-600 V
    • ANSI Type-2 frontplate
  • Ranch Runner 50 or 60 Hz (10-50 kVA)
    • Primary voltage: 2400-14,400 V
    • Secondary voltage: 120-600 V
    • Rural Utilities Services (RUS) approved frontplate

Specifications

  • Meet or exceeds ANSI, NEMA and DOE2016 standards
    • IEEE standards C57.12.00, C57.12.38, C57.12.28, 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 C57.12.28-2005 and C57.12.29-2005 standards (stainless steel units only)
  • Full compliance with IEEE Std C57.12.28-2005 standard enclosure integrity requirements
  • Envirotemp FR3 fluid or electrical grade mineral oil
  • 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:
    • 10, 15, 25, 37.5, 50, 75, 100, 167
    • The applicable kVA rating shall be specified on the inquiry
  • Quality System ISO 9001 certified
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