IEEE C37.121-2020(Redline)

$51.46

IEEE Guide for Switchgear–Unit Substation–Requirements (Redline)

Published By	Publication Date	Number of Pages
IEEE	2020

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Description

Revision Standard – Active. The basis for the coordination of equipment in unit substations by assisting in the selection of components is intended as the use of this guide. A variety of designs for unit substations are possible using various combinations of incoming sections, transformer sections, outgoing sections, and transition sections. It is intended that the incoming, outgoing, transformer, and transition sections included in a unit substation meet the basic requirements of applicable industry standards for those sections. This guide covers three-phase unit substations for step-down operation in the range of 112.5 kVA or greater at primary voltages of 601 V through 52 kV.

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