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POWER TRANSFORMERS - PART 2: TEMPERATURE RISE FOR LIQUID-IMMERSED TRANSFORMERS
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Available format(s): Hardcopy, PDF
Language(s): English
Published date: 01-01-2011
Publisher: National Standards Authority of Ireland
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.Only cited Standards give presumption of conformance to New Approach Directives/Regulations.Dates of withdrawal of national standards are available from NSAI.
FOREWORD1 Scope2 Normative references3 Terms and definitions4 Cooling methods5 Normal cooling conditions6 Temperature rise limits7 Temperature rise testsAnnex A (informative) - Hot-spot winding temperature rise determination for OFAF and OFWF cooled transformers based on the top-liquid temperature in tankAnnex B (informative) - Methods to estimate the hot-spot winding temperature risesAnnex C (informative) - Techniques used in temperature rise testing of liquid-immersed transformersAnnex D (informative) - Dissolved gases analysis for the detection of local overheatingAnnex E (informative) - Application of optical fibre sensors for winding hot-spot measurementsBibliographyAnnex ZA (normative) - Normative references to international publications with their corresponding European publications
Pertains to liquid-immersed transformers, identifies power transformers according to their cooling methods, defines temperature rise limits and gives the methods for temperature rise tests.
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