Full Description

Scope

This guide provides recommendations for loading mineral-oil-immersed transformers and step-voltage regulators with insulation systems rated for a 65 C average winding temperature rise at rated load. This guide applies to transformers manufactured in accordance with IEEE Std C57.12.001 and tested in accordance with IEEE Std C57.12.90, and step-voltage regulators manufactured and tested in accordance with IEEE Std C57.15. Because a substantial population of transformers and step-voltage regulators with insulation systems rated for 55 C average winding temperature rise at rated load are still in service, recommendations that are specific to this equipment are also included.

Purpose

Applications of loads in excess of nameplate rating involve some degree of risk. It is the purpose of this guide to identify these risks and to establish limitations and guidelines, the application of which willminimize the risks to an acceptable level.

Abstract

Revision Standard - Active.This guide provides recommendations for loading mineral-oil-immersed transformers and step-voltage regulators with insulation systems rated for a 65 C average winding temperature rise at rated load. This guide applies to transformers manufactured in accordance with IEEE Std C57.12.001 and tested in accordance with IEEE Std C57.12.90, and step-voltage regulators manufactured and tested in accordance with IEEE Std C57.15. Because a substantial population of transformers and step-voltage regulators with insulation systems rated for 55 C average winding temperature rise at rated load are still in service, recommendations that are specific to this equipment are also included.

Product Details

Published: 03/07/2012 ISBN(s): 9780738171302, 9780738171319, 9780738171951, 9780738172163, 9781504413879 Number of Pages: 123File Size: 1 file , 1.5 MBRedline File Size:2files, 3.1 MB Product Code(s): STDRL97202, STD97202, STDPD97202, STDPDRL97202, STDPL97202