IEEE C37.121-2012

IEEE Guide for Switchgear – Unit Substation – Requirements

Institute of Electrical and Electronics Engineers / 22-Feb-2013 / 42 pages

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 stepdown operation in the range of 112.5 kVA or greater at primary voltages of 601 V through 38 kV.

Keywords:
control,dead-front switchboard,distribution,fuse,IEEE C37.121,metal-clad switchgear,metal-enclosed switchgear,metering,mobile unit substation,molded-case circuit breaker,motor control center,power circuit breaker,primary unit substation,radial substation,rectifier-type substation,secondary selective substation,secondary unit substation,spot-network substation,substation,surge protection,switchgear,transformer,transition section,unit substation

Product Code(s): STD98116,STDPD98116

Ordering and availability

This publication is available both in printed and PDF edition.

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