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About This Item


Full Description

This standard describes installation procedures for pad-mounted, sealed, self-cooled or fan-cooled, compartmental, single- and three-phase liquid filled distribution and power transformers with primary windings rated from 2400 volts to 35 kV AC, nominal, and rated from 75 kVA through 5000 kVA, and associated accessories, designed for outdoor installation at grade level with underground entrance of primary and secondary conductors, and used for supplying power, heating and lighting loads for commercial, institutional, and industrial use in non-hazardous locations.

It also covers periodic routine maintenance procedures for transformers, and special procedures used after adverse operating conditions such as short-circuit, ground-fault or immersion in water.

Document History

  1. NECA 410-2013


    Standard for Installing and Maintaining Liquid-Filled Transformers

    • Most Recent
  2. NECA 410-2005

    Standard for Installing and Maintaining Liquid-Filled Transformers

    • Historical Version