IEEE 1776 Combines Two Standards for Electrical Insulation Systems
March 23, 2009 // Published as a news service by IHS
The Institute of Electrical and Electronics Engineers (IEEE) approved IEEE 1776 - Recommended Practice for Thermal Evaluation of Unsealed or Sealed Insulation Systems for AC Electric Machinery Employing Form-Wound Pre-Insulated Stator Coils for Machines Rated 15000 V and Below.
A combination of two previous standards, IEEE 275-1992 and IEEE 429-1994 - IEEE 1776 outlines a test procedure for comparing two or more insulation systems in accordance with their expected life at rated temperature.
IEEE also approved work to begin on revisions to two power and energy-related standards: IEEE 1310 - Recommended Practice for Thermal Cycle Testing of Form-Wound Stator Bars and Coils for Large Rotating Machines and IEEE C57.637 - IEEE Guide for the Reclamation of Insulating Oil and Criteria for Its Use.
The latter guide will be revised to include current information regarding reclamation of used transformer mineral oil and the associated test methods and suggested properties for reuse.
IEEE also reaffirmed the following standards:
. Source: Institute of Electrical and Electronics Engineers Standards Association (IEEE- SA).