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Standard ČSN EN 50353 1.5.2002 preview

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ČSN EN 50353 (346770)

Insulating oil - Determination of fibre contamination by the counting method using a microscope



STANDARD published on 1.5.2002


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The information about the standard:

Designation standards: ČSN EN 50353
Classification mark: 346770
Catalog number: 64762
Publication date standards: 1.5.2002
SKU: NS-154596
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Insulating oils

Annotation of standard text ČSN EN 50353 (346770):

Tato evropská norma popisuje dvě metody pro stanovení kontaminace vlákny v minerálních izolačních olejích, které jsou používány v elektrotechnických zařízeních. Základem metod je filtrace vzorku oleje, zkoumání a počítání vláken na povrchu filtru pomocí optického mikroskopu. Těmito metodami mohou být měřena a počítána vlákna do velikosti 100 mm délky. Metody jsou aplikovatelné pro nepoužité (nové) oleje i pro oleje v provozu. Metoda popsaná v hlavním textu je vhodná pro vzorky oleje ze sudů (nádrží) nebo pro oleje z elektrotechnických zařízení v provozu, kde lze očekávat relativně vysoké koncentrace vláken. Alternativní metoda definovaná v příloze A je aplikovatelná na vzorky nových olejů odebraných z objemných zásobníků oleje, nebo z velkých transformátorů, které nejsou dlouho v provozu od naplnění olejem a kde se předpokládá relativně nízká koncentrace obsahu vláken. Originál evropské normy obsahuje 16 stran anglického textu

Preview of the standard ČSN EN 50353 (346770)

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