Insulating liquids. Determination of acidity Colourimetric titration

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-08-2007

Publisher

British Standards Institution

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
   5.1 Titration reagent
   5.2 Titration solvent
   5.3 Potassium hydrogen phthalate, primary standard
   5.4 Standard hydrochloric acid solution
   5.5 Alkali Blue 6B indicator solution
   5.6 Cobalt nitrate solution
6 Apparatus
   6.1 Titration vessel
   6.2 Stirrer
   6.3 Burette
7 Sampling
8 Procedure
   8.1 Standardization of alcoholic potassium hydroxide
        solution
   8.2 Blank titration
   8.3 Sample titration
9 Calculation of results
10 Precision
   10.1 Repeatability
   10.2 Reproducibility
11 Report
Annex A (informative) Determination of acidity in electrical
        insulating oils by photometric titration
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Describes a procedure for determination of the acidity of unused and used electrical mineral insulating oils.

Describes a procedure for 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 that may or may not be shown by 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.

Committee	GEL/10
DocumentType	Standard
Pages	20
PublisherName	British Standards Institution
Status	Current

Standards	Relationship
UNE-EN 62021-2:2008	Identical
EN 62021-2 : 2007	Identical
IEC 62021-2:2007	Identical
I.S. EN 62021-2:2007	Identical
NF EN 62021-2 : 2007	Identical
DIN EN 62021-2 : 2008	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
IEC 60567:2011	Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance
ISO 6619:1988	Petroleum products and lubricants — Neutralization number — Potentiometric titration method
EN 60567:2011	OIL-FILLED ELECTRICAL EQUIPMENT - SAMPLING OF GASES AND ANALYSIS OF FREE AND DISSOLVED GASES - GUIDANCE (IEC 60567:2011)

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BS EN 62021-2:2007

Insulating liquids. Determination of acidity Colourimetric titration

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referenced By This Book

Standards Referencing This Book

Category

Subcategory