— P OW ER TR A NS FO R M ER S

xSPT small power liquid-filled transformersExpanding a proven technology

ABB complements its small power transformer portfolio with a modern and robust transformer that adopts a circular core and coil solution. xSPT is the ideal solution to increase the reliability and efficiency of your power system.

The challengeResponding to new requirements in a changing world, ABB has expanded its design portfolio by adding the xSPT circular core and coil multi-layer design for small power transformers rated up to 72.5 kV class.

ABB’s solution xSPT brings customers total value by leveraging proven engineering excellence with ABB’s global expertise in power transformers. This design offers high quality, optimized total ownership cost, design strength and maximized life expectancy.

Key features and benefits• Circular core and coil design platform• High and low voltage multi-layer technology• Short circuit strength• Optimized mechanical design • Rigid structure for cleats and leads• Robust active part clamping design based on ABB

experience in power transformer technology• Low sound level capabilities

• Reduced risk of failure in service• Optimized total cost of ownership (TOC)• 3D modeling technology

3D modeling in transformer designABB utilizes a 3D design platform in Creo (Pro/E) CAD system. The adoption of 3D modeling techniques provides the visibility to anticipate, identify and address a range of issues in the design and production phase that could otherwise precipitate serious problems once the unit enters service.

Direct benefits• Faster customer engineering review cycle• Automatically checks potential dimensionnal

conflicts• 3D models available for customer via CAD file

share format• Enhanced performance and reduced failure risks

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—We reserve the right to make technical changes or modify the contents of this document without prior notice. With re-gard to purchase orders, the agreed par-ticulars shall prevail. ABB AG does not ac-cept any responsibility whatsoever for potential errors or possible lack of infor-mation in this document.

We reserve all rights in this document and in the subject matter and illustrations con-tained therein. Any reproduction, disclo-sure to third parties or utilization of its contents – in whole or in parts – is forbidden without prior written consent of ABB AG. Copyright© 2017 ABBAll rights reserved

—ABB Inc.2135 Philpott RoadSouth Boston, Virginia, 24592 USA

abb.com/transformers

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—01 Final tests in ABB factory in South Boston, Virginia, US. —02 3D models available for customer via CAD file share format.

Technical data

kV class Up to 69 kV

Rated power 5 to 27 MVA

Rated voltage HV side: 13.8 kV to 72.5 kVLV side: 1.2 kV to 13.8 kV

Insulation liquid Mineral oil or Ester fluid

Winding insulation DuraBIL® or thermally upgraded paper

Core Circular with step lap

Winding LV Circular, foil AL/Cu Conductor

Winding HV Circular, strap AL/Cu Conductor

Bushing HV and LV Cover/ Wall

Externals IEEE standards and industry practices