Shopping cart 0
Standard

NEK IEC 60076-7:2018

Published
Preview Preview is not available

Corrigendums and amendments are bought separately.

Language
Services

Abstract

IEC 60076-7:2018 is now available as IEC 60076-7:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60076-7:2018 is applicable to mineral-oil-immersed transformers. It describes the effect of operation under various ambient temperatures and load conditions on transformer life. This document provides guidance for the specification and loading of power transformers from the point of view of operating temperatures and thermal ageing. It provides recommendations for loading above the nameplate rating and guidance for the planner to choose appropriate rated quantities and loading conditions for new installations. This edition includes the following significant technical changes with respect to the previous edition: a) title has been updated from "oil-immersed power transformers" to "mineral-oil-immersed transformers"; b) insulation life is updated by considering latest research findings; c) temperature limits have been reviewed and maximum core temperature is recommended; d) number of fibre optic sensors is recommended for temperature rise test; e) Q, S and H factors are considered; f) thermal models are revised and rewritten in generally applicable mathematical form; g) geomagnetic induced currents are briefly discussed and corresponding temperature limits are suggested; h) extensive literature review has been performed and a number of references added to bibliography.

Document information

  • Standard from NEK
  • Published:
  • Edition: 2.0
  • Version: 1
  • Document type: NAT
  • Pages
  • ICS 29.180
  • National Committee NEK/NK14

Product Relations