PROCESS FOR MEASURING THERMAL FIELD IN ELECTRIC TRANSFORMERS

The process for measuring the thermal filed in electric transformers relates to the possibility of reducing the time required for measuring and determining the spatial thermal field in transformers, irrespective of the cooling medium (oil, air, etc). The process is characterized in that five represe...

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1. Verfasser: MEREANU ADRIAN
Format: Patent
Sprache:eng ; rum
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Zusammenfassung:The process for measuring the thermal filed in electric transformers relates to the possibility of reducing the time required for measuring and determining the spatial thermal field in transformers, irrespective of the cooling medium (oil, air, etc). The process is characterized in that five representative sections (a, b, c, d, e) in three-phase transformers and two representative sections (f, g) in one-phase transformers are determined and nine thermocouples are located in the representative section, three of said thermocouples (T 1, T 2, T 3) being in the low voltage winding (2) and six of them (T 4...T 9) in the high voltage winding (3). Procedeul pentru măsurarea câmpului termic la transformatoarele electrice se referă la posibilitatea reducerii timpului necesar pentru efectuarea măsurătorilor şi determinarea câmpului termic spaţial, la transformatoare, indiferent de mediul de răcire (ulei, aer etc.). Procedeul se caracterizează prin aceea că se determină cinci secţiuni reprezentative (a, b, c, d, e), la transformatoarele trifazate, şi două secţiuni reprezentative (f, g), la transformatoarele monofazate, iar în secţiunea reprezentativă, se plasează nouă termocuple, din care trei (T, T, T) în bobinajul de joasă tensiune (2) şi şase (T...T) în bobinajul de înaltă tensiune (3).