Method of Estimating Overheating Temperature of Oil-Immersed Electric Appliance

The present invention is directed to a method of estimating an overheating temperature of an oil-immersed electric appliance in which ester oil is used as insulating oil. The overheating temperature is estimated based on a first concentration ratio representing a concentration ratio between two type...

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Hauptverfasser: HAYAMIZU, Shiki, KURIYAMA, Ryota, MIZUNO, Kota, KATO, Fukutaro
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creator HAYAMIZU, Shiki
KURIYAMA, Ryota
MIZUNO, Kota
KATO, Fukutaro
description The present invention is directed to a method of estimating an overheating temperature of an oil-immersed electric appliance in which ester oil is used as insulating oil. The overheating temperature is estimated based on a first concentration ratio representing a concentration ratio between two types of gas components contained in the ester oil and a second concentration ratio representing a concentration ratio between other two types of gas components contained in the ester oil. The first concentration ratio and the second concentration ratio are selected from a concentration ratio between acetylene and ethane, a concentration ratio between acetylene and hydrogen, a concentration ratio between acetylene and methane, and a concentration ratio between acetylene and ethylene.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETS
MEASURING
PHYSICS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TESTING
TRANSFORMERS
title Method of Estimating Overheating Temperature of Oil-Immersed Electric Appliance
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