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IEC 60763-2:2007

Current
Current

The latest, up-to-date edition.

Specification for laminated pressboard - Part 2: Methods of test
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English - French

Published date

15-02-2007

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Conditioning of test specimens
4 Drying of test specimens
   4.1 Method A (preferable)
   4.2 Method B
5 Dimensions
   5.1 Thickness
6 Mechanical tests
   6.1 Flexural strength and load to produce a
        standard deflection
   6.2 Apparent modulus of elasticity in flexure
7 Compressibility
   7.1 Principle
   7.2 Test apparatus
   7.3 Test pieces
   7.4 Procedure
   7.5 Results
8 Electric strength in oil
   8.1 General and conditioning
   8.2 Electric strength along laminate (edgewise
        electric strength)
9 Internal ply strength, thermal resistance and
   oil compatibility
   9.1 Principle
   9.2 Test specimens
   9.3 Test apparatus
   9.4 Procedure
   9.5 Determination of the flexural strength
   9.6 Results
10 Apparent density
   10.1 Test specimens
   10.2 Procedure
   10.3 Results
11 Moisture content
12 Shrinkage in air after drying
   12.1 Test specimens
   12.2 Procedure
   12.3 Results
13 Oil absorption
   13.1 Test specimens
   13.2 Procedure
   13.3 Results
14 Ash content
   14.1 Procedure
   14.2 Results
15 Contamination of liquid dielectrics
   15.1 Apparatus
   15.2 Test specimens
   15.3 Procedure
   15.4 Results
16 Conductivity of aqueous extract
   16.1 Procedure
   16.2 Results
17 pH of aqueous extract

IEC 60763-2:2007 gives methods of test applicable for the material classified in IEC 60763-1. This edition includes the following significant technical changes with respect to the previous edition:
The standard has generally been revised editorially and brought into line with IEC 60641-2;
The test method for the determination of the internal ply strength has been replaced with an alternative method; and
The test method for the determination of the thermal resistance has been enlarged in its scope.

Committee
TC 15
DevelopmentNote
Stability Date: 2017. (11/2017)
DocumentType
Standard
Pages
27
PublisherName
International Electrotechnical Committee
Status
Current
Supersedes

BS EN 60763-3-1 : 1996 LAMINATED PRESSBOARD FOR ELECTRICAL PURPOSES - PART 3: SPECIFICATIONS FOR INDIVIDUAL MATERIALS - SHEET 1: REQUIREMENTS FOR LAMINATED PRECOMPRESSED PRESSBOARD, TYPES LB 3.1A.1 AND LB3.1A.2
DD IEC/TS 62332-1:2011 Electrical insulation systems (EIS). Thermal evaluation of combined liquid and solid components General requirements
CEI EN 60763-3-1 : 2012 SPECIFICATION FOR LAMINATED PRESSBOARD - PART 3: SPECIFICATIONS FOR INDIVIDUAL MATERIALS - SHEET 1: SPECIFICATIONS FOR LAMINATED PRECOMPRESSED BOARD TYPES LB 3.1.1, 3.1.2, 3.3.1 AND 3.3.2
IEC TS 62332-2:2014 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 2: Simplified test
EN 60763-3-1:2011 Laminated pressboard for electrical purposes - Part 3: Specifications for individual materials - Sheet 1: Requirements for laminated precompressed pressboard, Types LB 3.1A.1 and LB3.1A.2
IEC TS 62332-1:2011 Electrical insulation systems (EIS) - Thermal evaluation of combined liquid and solid components - Part 1: General requirements
NF EN 60763 3-1 : 2011 LAMINATED PRESSBOARD FOR ELECTRICAL PURPOSES - PART 3: SPECIFICATIONS FOR INDIVIDUAL MATERIALS - SHEET 1: REQUIREMENTS FOR LAMINATED PRECOMPRESSED PRESSBOARD, TYPES LB 3.1A.1 AND LB 3.1A.2
I.S. EN 60763-3-1:2011 LAMINATED PRESSBOARD FOR ELECTRICAL PURPOSES - PART 3: SPECIFICATIONS FOR INDIVIDUAL MATERIALS - SHEET 1: REQUIREMENTS FOR LAMINATED PRECOMPRESSED PRESSBOARD, TYPES LB 3.1A.1 AND LB3.1A.2
IEC 60763-3-1:2010 Laminated pressboard for electrical purposes - Part 3: Specifications for individual materials - Sheet 1: Requirements for laminated precompressed pressboard, Types LB3.1A.1 and LB3.1A.2
PD IEC/TS 62332-2:2014 Electrical insulation systems (EIS). Thermal evaluation of combined liquid and solid components Simplified test

IEC 60243-1:2013 Electric strength of insulating materials - Test methods - Part 1: Tests at power frequencies
IEC 62021-1:2003 Insulating liquids - Determination of acidity - Part 1: Automatic potentiometric titration
IEC 60250:1969 Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths
IEC 61125:1992 Unused hydrocarbon based insulating liquids - Test methods for evaluating the oxidation stability
IEC 60641-2:2004 Pressboard and presspaper for electrical purposes - Part 2: Methods of tests
IEC 60296:2012 RLV Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
ISO 2144:2015 Paper, board and pulps Determination of residue (ash) on ignition at 900 degrees C
ISO 287:2017 Paper and board — Determination of moisture content of a lot — Oven-drying method
IEC 60247:2004 Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan d) and d.c. resistivity
IEC 60763-1:2010 Laminated pressboard for electrical purposes - Part 1: Definitions, classification and general requirements

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