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BS EN 62021-1:2003

BS EN 62021-1:2003

Current

Current

The latest, up-to-date edition.

Insulating liquids. Determination of acidity Automatic potentiometric titration

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

12-23-2003

Publisher

British Standards Institution

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and auxiliary products
   5.1 Reagents
   5.2 Titration reagent
   5.3 Titration solvent
   5.4 Potassium hydrogen phthalate, primary standard
   5.5 Potassium chloride reference electrolyte
   5.6 Aqueous buffer solutions
   5.7 Cleaning solution
6 Apparatus
   6.1 Potentiometric titration apparatus
   6.2 Glass indicating electrode
   6.3 Reference electrode
   6.4 Stirrer
   6.5 Titration vessel
   6.6 Titration stand
7 Sampling
8 Preparation and maintenance of electrode system
9 Calibration of apparatus
10 Procedure
   10.1 Standardization of alcoholic potassium hydroxide
        solution
   10.2 Blank titration
   10.3 Sample titration
11 Calculation
12 Precision
   12.1 Repeatability
   12.2 Reproducibility
13 Report
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Specifies the procedure for the determination of the acidity of unused and used electrical mineral insulating oils. The method may be used to indicate relative changes that occur in a mineral insulating oil during use under oxidizing conditions regardless of the colour or other properties of the resulting mineral oil.

Describes the procedure for the determination of the acidity of unused and used electrical mineral insulating oils. The method may be used to indicate relative changes that occur in a mineral insulating oil during use under oxidizing conditions regardless of the colour or other properties of the resulting mineral oil. The acidity can be used in the quality control of unused mineral oil. As a variety of oxidation products present in used mineral oil contribute to acidity and these products vary widely in their corrosion properties, the test cannot be used to predict corrosiveness of a mineral oil under service conditions. The acidity results obtained by this test method may or may not be numerically the same as those obtained by colorimetric methods, but they are generally of the same magnitude.

Committee
GEL/10
DevelopmentNote
Supersedes 00/241517 DC (01/2004)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
SN EN 62021-1 : 2003 Identical
UNE-EN 62021-1:2004 Identical
IEC 62021-1:2003 Identical
NF EN 62021-1 : 2004 Identical
DIN EN 62021-1 : 2004 Identical
NBN EN 62021-1 : 2003 Identical
I.S. EN 62021-1:2003 Identical
EN 62021-1:2003 Identical

08/30167496 DC : DRAFT FEB 2008 BS 148 - RECLAIMED MINERAL INSULATING OIL FOR TRANSFORMERS AND SWITCHGEAR - SPECIFICATION
BS 148:2009 Reclaimed mineral insulating oil for transformers and switchgear. Specification

IEC 60475:2011 Method of sampling insulating liquids
ISO 6619:1988 Petroleum products and lubricants — Neutralization number — Potentiometric titration method

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Hardcopy - English
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