NB/T 42140-2017 English PDF

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NB/T 42140-2017: Insulating liquids. Oil-impregnated paper and pressboard. Determination of water by automatic coulometric Karl Fischer titration
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 42140-2017	419	Add to Cart	4 days	Insulating liquids. Oil-impregnated paper and pressboard. Determination of water by automatic coulometric Karl Fischer titration	Valid

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Basic data

Standard ID: NB/T 42140-2017 (NB/T42140-2017)
Description (Translated English): Insulating liquids. Oil-impregnated paper and pressboard. Determination of water by automatic coulometric Karl Fischer titration
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: K15
Classification of International Standard: 29.040.10
Word Count Estimation: 18,110
Date of Issue: 2017-11-15
Date of Implementation: 2018-03-01
Adopted Standard: IEC 60814-1997, MOD
Regulation (derived from): National Energy Board Bulletin 2017 No. 10
Issuing agency(ies): National Energy Administration
Summary: This standard specifies the method for determining the moisture content of insulating liquids and oil-impregnated cellulose insulation materials by Karl Fischer automatic electric titration. The direct titration method is suitable for low viscosity insulating liquids with a viscosity of less than 100 mm ^ (2) / s at 40 �� C and a moisture content of more than 2 mg / kg. The gas extraction method is applicable to a high viscosity insulating liquid having a viscosity of more than 100 mm ^ (2) / s at 40 �� C and a moisture content of more than 2 mg / kg. The method for determining the water content in oil-impregnated paper and paperboard is suitable for oil-impregnated paper and oil-impregnated paperboard having a moisture content of 0.1% to 20%.

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