C37.121-2020 - IEEE Guide for Switchgear--Unit Substation--Requirements - Redline | IEEE Standard | IEEE Xplore

C37.121-2020 - IEEE Guide for Switchgear--Unit Substation--Requirements - Redline

Status: active - Redline
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Abstract:

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...Show More
Scope: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. This guide does no...Show More
Purpose:The guide is intended for use as the basis for the coordination of equipment in unit substations by assisting in the selection of components. A variety of designs for uni...Show More

Abstract:

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.
Scope:
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. This guide does not cover the following installations: a) Substations in which the transformer section is described and defined as “network,” “subway,” “vault,” or “underground” in IEEE Std C57.12.24™ [B13] and IEEE Std C57.12.40™ [B15]2 b) Substations in which the transformer section is described and defined as “pad-mounted” c) Rectifier-type substations d) Mobile unit substations e) Installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles f) Installations for mines g) Inst...
Purpose:
The guide is intended for use as the basis for the coordination of equipment in unit substations by assisting in the selection of components. 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. In addition, this guide provides suggested requirements when used as part of a unit substation.
Date of Publication: 09 March 2021
Electronic ISBN:978-1-5044-7773-4
Persistent Link: https://ieeexplore.ieee.org/servlet/opac?punumber=9464354

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