Full Description

Scope

This standard applies to the insulation systems used in all liquid-immersed distribution and power transformers. This standard provides test procedures to evaluate the thermal aging characteristics ofinsulation systems used in liquid-immersed distribution or power transformers. The dielectric liquid is part of the insulation system.

Purpose

The objective of this test procedure is to establish uniform methods for investigating the effects of operating temperature on the life expectancy of liquid-immersed transformer insulation systems. Theresults of these test procedures are expected toa) Provide the basis for the selection of a limiting hottest-spot temperature for rating purposesb) Provide life curves that may serve as the basis for a guide for loadingc) Permit the comparative evaluation of a proposed insulation system with reference to an industry proven system that has been shown to be acceptable in service

Abstract

Revision Standard - Active.A test procedure to provide a uniform method for investigating the effect of operating temperature on the life expectancy of liquid-immersed transformers is provided. The test procedures are intended to provide data for the selection of a limiting hottest-spot temperature for rating purposes, provide data which may serve as the basis for a guide for loading, and permit the comparative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.

Product Details

Published: 01/27/2012 ISBN(s): 9780738171166, 9780738171173, 9780738171968, 9780738172170, 9781504413763 Number of Pages: 37File Size: 1 file , 370 KBRedline File Size:2files, 1 MB Product Code(s): STDRL97203, STD97203, STDPD97203, STDPDRL97203, STDPL97203