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CENELEC
EN 50353:2001

EN 50353:2001

Current

Current

The latest, up-to-date edition.

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

Published date

09-27-2001

Publisher

European Committee for Standards - Electrical

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Cleaning procedure
8 Sampling
9 Filtration procedure
10 Microscope calibration
11 Fibre counting and expression of results
12 Calculation and expression of results
13 Precision
14 Test report
Figure 1 - Schematic representation of a suitable
           filtration apparatus
Annex A (normative) - Method for low fibre concentrations
  A.1 Reagents
  A.2 Apparatus
  A.3 Initial set-up and cleaning
  A.4 Sampling, and filtration of oil sample
  A.5 Blank tests
  A.6 Counting method
  A.7 Calculation and expression of results
  A.8 Precision
  A.9 Test report
Figure A.1 - Schematic representation of a suitable
             filtration apparatus for low fibre
             concentrations

This standard describes the method of determining fibre contamination of mineral insulating oil used in electrotechnical equipment by counting the number of fibres on the surface of a membrane filter

Committee
CLC/SR 10
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Current

Standards Relationship
DIN EN 50353 : 2002 Identical
SN EN 50353 : 2001 Identical
UNE-EN 50353:2002 Identical
CEI EN 50353 : 2002 Identical
NBN EN 50353 : 2001 Identical
I.S. EN 50353:2001 Identical
NEN EN 50353 : 2001 Identical
PN EN 50353 : 2002 Identical
NF EN 50353 : 2003 Identical
BS EN 50353:2001 Identical
VDE 0370-17 : 2002 Identical

BS EN 60970:2007 Insulating liquids. Methods for counting and sizing particles
I.S. EN 50375:2002 TESTING METHODOLOGY FOR WIPERS USED IN ELECTRICAL INSULATING OIL
I.S. EN 60970:2007/AC:2008 INSULATING LIQUIDS - METHODS FOR COUNTING AND SIZING PARTICLES
BIS IS 13236 : 2013 INSULATING LIQUIDS - METHODS FOR COUNTING AND SIZING PARTICLES
BS EN 50375:2002 Testing methodology for wipers used in electrical insulating oil
CEI EN 50375 : 2003 TESTING METHODOLOGY FOR WIPERS USED IN ELECTRICAL INSULATING OIL
IEC 60970:2007 Insulating liquids - Methods for counting and sizing particles
EN 60970:2007/corrigendum:2008 INSULATING LIQUIDS - METHODS FOR COUNTING AND SIZING PARTICLES
CEI EN 60970 : 2007 INSULATING LIQUIDS - METHODS FOR COUNTING AND SIZING PARTICLES
EN 50375:2002 Testing methodology for wipers used in electrical insulating oil

ISO 5598:2008 Fluid power systems and components Vocabulary
IEC 60475:2011 Method of sampling insulating liquids

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