Power Partners, Inc.

- Model T-T - Three-Phase Transformers

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Power Partners' T-T, or T-connected, overhead distribution transformers can be used for most three-phase applications up to 500 kVA. T-connected transformers consist of two single-phase core/coil assemblies. This type of connection is also referred to as a Scott-T connection.

For three-phase applications in which large motors are the load and these motors are frequently started, Triplex designed three-phase transformers are required rather than T-T transformers. Oil field pumping loads and some irrigation pumping loads should use only the Triplex designs as well. ISO 9001: 2008 Certified.

  • Wound core with step-lap joints for increased efficiency and lower noise levels.
  • Progressively wound coils with adhesive resins on insulating paper or conductors for increased short circuit strength, efficiency, and thermal strength.
  • CSP protection package available as an option for increased protection against surge currents, short circuits, and overloads:
  • Primary protective links
  • Surge arresters
  • Secondary circuit breaker
  • Secondary breaker operating handle with emergency overload reset and overload signal light
  • Self-venting and resealing cover that eliminates the need for an auxiliary pressure-relief device and offers increased safety through higher tank withstand.
  • Durable, corrosion-resistant paint finish.
  • Cover has 15 kV dielectric insulation and increased resistance to corrosion. The cover is sloped 15, preventing water from collecting and thereby reducing the chances of corrosion and leaking.
  • Lighter weight, lower cost, and cleaner installations than conventional three-phase design.

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