Testing methodology for wipers used in electrical insulating oil

Published date

08-28-2002

Publisher

European Committee for Standards - Electrical

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test methods
   4.1 Fibre release test (refer to annex A)
   4.2 Snagging test (refer to annex B)
   4.3 Equilibrium moisture content (refer to annex C)
   4.4 Oil absorbency (refer to annex D and annex E)
5 Test report
Annex A (normative) Fibre release from wipers
Annex B (normative) The snagging test
Annex C (normative) Equilibrium moisture content of
        wipers
Annex D (normative) Oil absorbency of wipers
Annex E (normative) Rate of absorbency
Figures

This European Standard specifies testing procedures for fibrous wipers to be used with equipment normally containing electrical insulating oil. Such testing is necessary to rank commercial products, so that possible contamination of insulating oil and electrical equipment with fibres during maintenance operations may be minimized.

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

Standards	Relationship
NF EN 50375 : 2002	Identical
NBN EN 50375 : 2003	Identical
NEN EN 50375 : 2002	Identical
I.S. EN 50375:2002	Identical
PN EN 50375 : 2003	Identical
UNE-EN 50375:2004	Identical
SN EN 50375 : 2002	Identical
VDE 0370-18:2003-02	Identical
DIN EN 50375:2003-2	Identical
BS EN 50375:2002	Identical
CEI EN 50375 : 2003	Identical

EN 60156:1995	Insulating liquids - Determination of the breakdown voltage at power frequency - Test method
IEC 60156:1995	Insulating liquids - Determination of the breakdown voltage at power frequency - Test method
EN 60814:1997	Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration
EN 50353:2001	Insulating oil - Determination of fibre contamination by the counting method using a microscope
IEC 60296:2012 RLV	Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
IEC 60814:1997	Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration
ISO 554:1976	Standard atmospheres for conditioning and/or testing — Specifications