PL76198B2 - - Google Patents

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Publication number
PL76198B2
PL76198B2 PL15828872A PL15828872A PL76198B2 PL 76198 B2 PL76198 B2 PL 76198B2 PL 15828872 A PL15828872 A PL 15828872A PL 15828872 A PL15828872 A PL 15828872A PL 76198 B2 PL76198 B2 PL 76198B2
Authority
PL
Poland
Prior art keywords
insulation
transformer
time constant
moisture content
leakage current
Prior art date
Application number
PL15828872A
Other languages
Polish (pl)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to PL15828872A priority Critical patent/PL76198B2/pl
Publication of PL76198B2 publication Critical patent/PL76198B2/pl

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  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Housings And Mounting Of Transformers (AREA)

Description

O zawilgoceniu izolacji transfor¬ matora wnioskuje sie na podstawie obliczonej wartosci stalej czasowej r izolacji wg wzoru: uN-c T =-7— [S] przy czym: Un — najwyzsza wartosc napiecia zasilana równa lub bliska wartosci napiecia znamionowego transformatora [V], C - pojemnosc miedzy uzwojeniami GN-4)N transformatora [F], I — wartosc pradu uplywu odczytana z charakterystyki I = f(U)przyUn[Al- Z przeprowadzonych badan wynika, ze stala czasowa dla izolacji niezawilgoconej wynosi powyzej 10 sekund. PL PLThe moisture content of the transformer insulation is concluded on the basis of the calculated value of the insulation time constant r according to the formula: uN-c T = -7— [S] where: Un - the highest value of the supplied voltage equal to or close to the rated voltage of the transformer [V], C - capacitance between the windings GN-4) N of the transformer [F], I - leakage current value read from the characteristic I = f (U) atUn [Al- The conducted tests show that the time constant for non-moist insulation is above 10 seconds. PL PL

Claims (1)

1. Zastrzezenie patentowe Sposób oznaczania zawilgocenia izolacji transformatorów w eksploatacji, wykonany za pomoca kenotronu jako zródla napiecia stalego, zasilajacego uzwojenie górnego napiecia transformatora oraz mikroamperomierza, znamienny tym, ze jako wskaznik zawilgocenia przyjmuje sie stala czasowa izolacji (r), obliczana z pradu uplywu, mierzonego w obwodzie niezasilanym, zwartym z kadzia.KI. 21d3,2 76196 MKP GOld 21/00 Rg1 nt \ci Vig2 n Rg3 Fig 4 A\ B3 BS PL PL1. Patent claim The method of determining the dampness of the insulation of transformers in operation, made with the use of a kenotron as a constant voltage source, supplying the upper voltage winding of the transformer and a microammeter, characterized by the fact that the moisture content indicator is the insulation time constant (r), calculated from the leakage current, measured in a non-powered circuit, shorted from the KI tank. 21d3,2 76196 MKP GOld 21/00 Rg1 nt \ ci Vig2 n Rg3 Fig 4 A \ B3 BS PL PL
PL15828872A 1972-10-16 1972-10-16 PL76198B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15828872A PL76198B2 (en) 1972-10-16 1972-10-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL15828872A PL76198B2 (en) 1972-10-16 1972-10-16

Publications (1)

Publication Number Publication Date
PL76198B2 true PL76198B2 (en) 1975-02-28

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ID=19960259

Family Applications (1)

Application Number Title Priority Date Filing Date
PL15828872A PL76198B2 (en) 1972-10-16 1972-10-16

Country Status (1)

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PL (1) PL76198B2 (en)

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