HD 631.1 S2:2007

Electric cables - Accessories - Material characterisation - Part 1: Fingerprinting and type tests for resinous compounds

This Harmonization Document specifies the test methods and requirements of tests for a) fingerprinting (as defined in 3.12), b) type testing (as defined in 3.13) of solvent-free polymerizable, reacting resinous compound intended to be used for electrical insulation and mechanical protection in cable accessories covered by EN 50393, HD 629.1 S2 and HD 629.2 S2, for low and medium voltage up to 20,8/36 (42) kV. Fingerprinting and type testing of materials do not have a mandatory link to type testing of accessories. They shall be regarded as stand-alone tests, but can be carried out in combination with the accessory type tests. NOTE Information on health and safety is given in Annex A.

Kabel und isolierte Leitungen - Garnituren - Materialcharakterisierung - Teil 1: Fingerprínt- und Typprüfungen für Reaktionsharzmassen

Dieses Harmonisierungsdokument legt die Prüfverfahren und Anforderungen für a) die Fingerprintprüfung (entsprechend 3.12), b) die Typprüfung (entsprechend 3.13) an lösemittelfreien aushärtbaren Reaktionsharzmassen, die als elektrische Isolierung oder mechanischer Schutz für Kabelgarnituren nach EN 50393, HD 629.1 S2 und HD 629.2 S2 fest, die für Nieder- und Mittelspannung bis 20,8/36 (42) kV eingesetzt werden. Fingerprint- und Typprüfungen an Materialien sind nicht zwingend mit Typprüfungen von Garnituren verbunden. Sie müssen als eigenständige Prüfung betrachtet werden, dürfen aber auch in Kombination mit Typprüfungen von Garnituren durchgeführt werden. ANMERKUNG Informationen zu Gesundheit und Sicherheit enthält Anhang A.

Câbles électriques - Accessoires - Caractérisation des matériaux - Partie 1: Essais d'identification et essais de type pour les composés résineux

Ce Document d’Harmonisation spécifie les méthodes et les exigences d’essai pour a) les essais d’identification (comme définis en 3.12), b) les essais de type (comme définis en 3.13) des composés résineux polymérisables sans solvant destinés à être utilisés pour l’isolation électrique et la protection mécanique dans les accessoires de câbles couverts par l’EN 50393, le HD 629.1 S2 et le HD 629.2 S2, pour la basse et la moyenne tension jusqu’à 20,8/36 (42) kV. Il n’existe pas de lien obligatoire entre les essais d’identification et les essais de type des matériaux et les essais de type des accessoires. Ils doivent être considérés comme des essais indépendants mais ils peuvent être réalisés en combinaison avec les essais de type des accessoires. NOTE Des informations sur la santé et la sécurité sont données en Annexe A.

Električni kabli - Pribor - Značilnosti materialov - 1. del: Identifikacija materiala in tipski preskusi za smolne zmesi

General Information

• Status: Withdrawn
• Publication Date: 11-Dec-2007
• Withdrawal Date: 31-Aug-2010
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: CLC/TC 20 - Electric cables
• Drafting Committee: IEC/TC 20 - IEC_TC_20
• Parallel Committee: IEC/TC 20 - IEC_TC_20
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 18-Sep-2020
• Completion Date: 18-Sep-2020
• Ref Project: SIST HD 631.1 S2:2008 - Electric cables - Accessories - Material characterisation -- Part 1: Fingerprinting and type tests for resinous compounds

Relations

• Replaces: HD 631.1 S1:1998 - Material characterisation - Part 1: Compounds for use in cable accessories: Resinous compounds before cure and in the cured state
• Effective Date: 29-Jan-2023
• Replaced By: EN 50655-1:2017 - Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for resinous compounds
• Effective Date: 27-Jan-2015

Standards Content (Sample)

SLOVENSKI oSIST prHD 631.1 S2:2005

PREDSTANDARD
julij 2005
Električni kabli – Pribor – Značilnosti materialov – 1. del: Fingerprinting in
preskušanje tipa za smolne zmesi
Electric cables – Accessories – Material characterisation – Part 1: Fingerprinting
and type tests for resinous compounds
ICS 29.060.20 Referenčna številka
oSIST prHD 631.1 S2:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

DRAFT
HARMONIZATION DOCUMENT prHD 631.1 S2
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT May 2005

ICS
English version
Electric cables - Accessories - Material characterisation
Part 1: Fingerprinting and type tests for resinous compounds

(to be completed) (to be completed)

This draft Harmonization Document is submitted to CENELEC members for CENELEC enquiry.
Deadline for CENELEC: 2005-11-25.

It has been drawn up by Technical Committee CENELEC TC 20.

If this draft becomes a Harmonization Document, CENELEC members are bound to comply with the
CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization
Document on a national level.
This draft Harmonization Document was established by CENELEC in three official versions (English,
French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

Warning : This document is not a Harmonization Document. It is distributed for review and comments. It is
subject to change without notice and shall not be referred to as a Harmonization Document.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Project: 13179 Ref. No. prHD 631.1 S2:2005 E
Draft for Enquiry
prHD 631.1 S2:2005 - 2 -
Foreword
This draft Harmonization Document was prepared by a task force under the direction of WG 11 of
CENELEC TC 20, Electric cables. As agreed at the Setubal meeting (June 2004) it is submitted to
CENELEC enquiry.
When published it will supersede HD 631.1 S1:1998.

HD 631 is planned to have 4 parts:

Part 1: Fingerprinting and type tests for resinous compounds

Part 2: Fingerprinting and type tests for heat shrinkable components for low voltage applications

Part 3: Fingerprinting for heat shrinkable components for medium voltage applications from 3,6/6 (7,2) kV
up to 20,8/36 (42) kV
Part 4: Fingerprinting for cold shrinkable components for low and medium voltage applications up to
20,8/36 (42) kV
NOTE It has been assumed in the preparation of this document that the execution of its provisions will
be entrusted to appropriately qualified and experienced people, for whose use it has been produced.

WARNING This Harmonized Document calls for the use of substances and/or procedures that may be
injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not
absolve the user from legal obligations relating to health and safety at any stage.

Draft for Enquiry
- 3 - prHD 631.1 S2:2005
CONTENTS
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 General requirements.6
4.1 Classification .6
4.2 Packaging.6
4.3 Marking and labelling .6
5 Resinous compound fingerprinting.7
5.1 General.7
5.2 Sampling.7
5.3 Sequence of tests .7
5.4 Preparation and conditioning .9
5.5 Test report .9
6 Resinous compound type tests .9
6.1 General.9
6.2 Sampling.9
6.3 Sequence of tests .10
6.4 Preparation and conditioning . 14
6.5 Test report . 14
7 Test methods . 15
7.1 General. 15
7.2 Gel time . 15
7.3 Pot life . 15
7.4 Exotherm peak. 16
7.5 Dry ageing . 17
7.6 Wet ageing (hydrolysis stability) . 17
7.7 Curing under water.17
Annex A (informative) Health and safety . 20
Annex B (normative) Test methods for fingerprinting – Dry ageing test . 21
Annex C (normative) Test sequence and test method for type tests – Dry ageing test . 23
Annex D (normative) Test sequence and test method for type test –
Wet ageing test (hydolysis stability) . 25

Draft for Enquiry
prHD 631.1 S2:2005 - 4 -
1 Scope
This Harmonization Document specifies the conditions and sequences of tests for

a) fingerprinting (as defined in 3.12),
b) type testing (as defined in 3.13)

of the solvent free polymerizable, reacting resinous compound intended to be used for electrical insulation
and mechanical protection in cable accessories covered by EN 50393, HD 629.1 S2 and HD 629.2 S2, for
low and medium voltage up to 20,8/36 (42) kV.

Fingerprinting and type testing of materials do not have a mandatory link to type testing of accessories.
They shall be regarded as stand-alone tests, but can be used in combination with the accessory type tests.

NOTE This standard is based on existing European practices and experience.

2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

1)
EN 50393 , Test methods and requirements for accessories for use on distribution cables of rated voltage
0,6/1,0 (1,2) kV
EN 60243-1, Electric strength of insulating materials — Test methods — Part 1: Test at power frequencies
(IEC 60243-1)
EN 61234–2, Electrical insulating materials — Methods of test for the hydrolytic stability — Part 2: Moulded thermosets
(IEC 61234-2)
HD 429, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials (IEC 60093)
1)
HD 629.1 S2 , Test requirements on accessories for use on power cables of rated voltage from
3,6/6(7,2) kV up to 20,8/36(42) kV — Part 1: Cables with extruded insulation
1)
HD 629.2 S2 , Test requirements on accessories for use on power cables of rated voltage from
3,6/6(7,2) kV up to 20,8/36(42) kV — Part 2: Cables with impregnated paper insulation
IEC 60250, 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
EN ISO 179, Plastics — Determination of charpy impact strength (ISO 179)
EN ISO 291, Plastics — Standard atmospheres for conditioning and testing (ISO 291)
EN ISO 527, Plastics — Determination of tensile properties (ISO 527)
EN ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (shore hardness)
(ISO 868)
EN ISO 1675, Plastics — Liquid resins — Determination of density by the pyknometer method (ISO 1675)
EN ISO 2555, Plastics — Resins in the liquid state or as emulsions or dispersions — Determination of apparent
viscosity by the Brookfield test method (ISO 2555)
EN ISO 3521, Plastics — Unsaturated polyester and epoxy resins — Determination of overall volume shrinkage
(ISO 3521)
EN ISO 4895, Plastics – Liquid epoxy resins — Determination of tendency to crystallize (ISO 4895)
ISO 7056, Plastics laboratory ware — Beakers
ASTM D 92, Standard test method for flash and fire points by Cleveland Open Cup

1)
At draft stage.
Draft for Enquiry
- 5 - prHD 631.1 S2:2005
3 Terms and definitions
3.1
resinous compound
compound for cable accessories made by the mixture of at least two components (resin and reagent)

NOTE For some applications additional components such as filler may be needed.

3.2
resin
liquid organic material that cures as a result of polymerization by means of reagents (e.g. hardener or accelerator)
without releasing additional volatile products

3.3
reagents
substance or compound of substances which causes, when added to resin, hardening of resin by cross linking of
molecules or accelerates hardening of resin

3.4
pot life
time available to mix the components of the resinous compound together and pour or inject the compound into the
cable accessory, such that it continues to smoothly and cohesively flow

3.5
“use before date” (shelf-life)
date until which a resinous compound, when stored under specified conditions of temperature and humidity, retains
specified properties
3.6
gel time
time required for the curing mixture to reach a gelatinous state as defined by the test method

3.7
density
ratio of mass to volume
3.8
tendency to crystallization
measurement of the ability of epoxy base resin to not change state (liquid to solid) by a certain temperature close to
water freezing point for a fixed time

3.9
exotherm peak temperature
highest temperature that is reached during the hardening process of a defined volume of a resinous compound after
mixing at a defined temperature

3.10
hardness
determination of the indentation of a material by means of durometers or by penetration of a needle (soft material)

3.11
hydrolysis stability
measurement of the resistance to hydrolysis of resinous compounds exposed to the simultaneous influence
of water and temperature which may lead to an irreversible change in mechanical and or electrical
properties of the compound
3.12
fingerprinting
tests made to establish and subsequently confirm the properties of materials or components used in cable
accessories
Draft for Enquiry
prHD 631.1 S2:2005 - 6 -
3.13
type tests
tests made on materials or components of a cable accessory in order to demonstrate satisfactory
performance characteristics to meet the intended application

3.14
deviation
variation of a property between original test values and the test values measured on later samples , the last expressed
as a percentage of the former
4 General requirements
4.1 Classification
Resinous compounds are classified according to their application in categories as follows:

Table 1 - Categories of resinous compounds
Voltage Class Characteristic
Function
Low Voltage (L) Mechanical Protection (MP) Cures in water (W)

Medium Voltage (M) Insulation (I)

A resinous compound is identified by a combination of categories.

For example: Low voltage resinous compound for mechanical protection: LMP;
Low voltage resinous compound for insulation, curing in presence of water: LIW;
Low voltage resinous compound for insulation & mechanical protection: LMP/LI.

Tests for fingerprinting and type testing are carried out in accordance with each of the resinous compound
categories.
4.2 Packaging
Packaging shall be sufficient to ensure that any stated shelf life of the resinous compound components is
maintained when stored under specified conditions of temperature and humidity.

4.3 Marking and labelling
4.3.1 General
The following information, in the relevant national language(s), shall be printed or labelled on the resinous
compound components packaging and on the accessory kit.

Draft for Enquiry
- 7 - prHD 631.1 S2:2005
4.3.2 Resinous compound components
Each individual part of the resinous compound, or the resinous compound component if packed separately
shall be printed or labelled on its packaging with:
1) supplier’s name or logo;
2) part number or identification;
3) lot number or production date;
4) specified storage conditions, if any;
5) “Use before date” (shelf-life);
6) health and safety marking according to relevant EU or national legislation (see also Annex A);
7) mixing and application instructions;
8) disposal instruction;
9) resinous compound categories.

4.3.3 Accessory kit
Each accessory kit containing a resinous compound shall be printed or labelled on its packaging and shall
at least indicate:
1) the specified storage conditions, if any;
2) the “Use before date” (shelf life);
3) the health and safety marking according to relevant EU or national legislation.

5 Resinous compound fingerprinting
5.1 General
Tests shall be carried out based on the category of the resinous compound as defined in Table 1.

5.2 Sampling
If fingerprinting of resinous compound is carried out as a stand-alone test, then the samples used for the
initial test shall be taken from material available as agreed between manufacturer and user.

If fingerprinting of resinous compound is carried out in combination with a accessory type test, then the
samples used for the initial test shall be taken from the same batch as those used in the accessory type
test. In the event that no material from the same batch is available, then the samples used for the initial
test shall be taken from material available as agreed between manufacturer and user.

5.3 Sequence of tests
Sequences of tests shall be carried out on the resinous compound in the following four stages, in
accordance with Table 2:
Stage 1: individual components prior to mixing;
Stage 2: resinous compound just after mixing (curing stage);
Stage 3: cured resinous compound (original);
Stage 4: cured resinous compound after thermal ageing (dry).

Draft for Enquiry
Draft for Enquiry
prHD 631.1 S2:2005 - 8 -
Table 2 — Fingerprinting tests: tests methods and requirements
a)
Number Property Test method Units Max. acceptable deviation Comments
Resin categories
LMP/LMPW/M LI/LIW
MP/
MI/
MMPW
MIW
Stage 1 – Individual components prior to mixing
1 Viscosity EN ISO 2555 Pa.s
± 10 % ± 10 %
Stage 2 – Resinous compound just after mixing (curing stage)
2 Gel time 7.2 min.
± 25 % ± 25 %
3 Exotherm at 23 °C 7.4
Peak temperature °C ± 10 % ± 10 %
Time to peak min
± 20 % ± 20 %
Stage 3 – Cured resinous compound (original)
4 Density non-filled compound EN ISO 1675 g/cm ± 2 % ± 2 %
Density filled compound EN ISO 1675 g/cm
± 10 % ± 10 %
5 Impact strength (without notch) EN ISO 179 kJ/m²
± 25 % ± 25 %
6 Shore hardness EN ISO 868 ± 5 ± 5
7 Tensile EN ISO 527 Mpa -
± 25 %
8 Elongation EN ISO 527 % ± 25 % -
9 Volume resistivity HD 429 -
Ω.cm ± 10 %
Stage 4 – Cured resinous compound after thermal ageing (dry)
10 Weight loss Annex B
± 20 % ± 20 %
11 Change in impact strength (without notch) Annex B ± 25 % ± 25 %
a)
From value for original lot of compound.

- 9 prHD 631.1 S2:2005
5.4 Preparation and conditioning
5.4.1 General
For all tests, unless otherwise specified, conditioning shall be carried out in accordance with EN ISO 291 using
atmosphere 23/50.
5.4.2 Resinous compound just after mixing (curing stage)

Compounds shall be prepared according to the supplier’s instructions, and then tested as specified in stage 1 of the
sequence of tests given in Table 2.

5.4.3 Cured resinous compound (original)

Compounds shall be prepared according to supplier’s instructions and cured for 24 h at room temperature unless
otherwise specified in the test method. The specimens shall be post-cured at (80 ± 2) °C for 24 h unless otherwise
specified in the test method [for example for weight loss: no curing at (80 ± 2) °C is required before weighing the
sample] and then cooled in a desiccator for 24 h at room temperature.

NOTE If degassing is needed, it will be indicated in the relevant test method and the conditions for the degassing will also be
indicated.
Tests shall then be carried out as specified in stage 2 of the sequence of tests given in Table 2.

5.4.4 Cured resinous compound after thermal ageing (dry)

Compounds shall be prepared as per 5.4.3.

Tests shall then be carried out as specified in stage 3 of the sequence of tests given in Table 2.

5.5 Test report
The test report shall include the following data:
1) resin category and identification;
2) lot number or identification;
3) conformity of marking and labelling to MSDS (Material Safety Data Sheet);
4) test results;
5) major test parameters, including conditioning and calibration, if any;
6) processing conditions to mix the compound;
7) copy of technical data sheet and MSDS.

6 Resinous compound type tests
6.1 General
Tests shall be carried out based on the category of the resinous compound as defined in Table 1. These tests are of
such a nature that, once successfully completed, they need not to be repeated unless changes are made in
the material, component formulation or manufacturing process, which might change the performance
characteristics.
6.2 Sampling
If a type test of resinous compound is carried out as a stand-alone test, then the samples used shall be
taken from material available as agreed between manufacturer and user.

Draft for Enquiry
prHD 631.1 S2:2005 - 10 -
If a type test of resinous compound is carried out in combination with an accessory type test, then the
samples used shall be from the same batch as those used in the accessory type test. In the event that no
material from the same batch is available, then the samples used shall be taken from material available as
agreed between manufacturer and user.

6.3 Sequence of tests
Tests shall be carried out on the resinous compound in the following four stages, in accordance with
Table 3:
Stage 1: Individual components prior to mixing;
Stage 2: Resinous compound just after mixing (curing stage);
Stage 3: Cured resinous compound (original);
Stage 4: Cured resinous compound after thermal ageing (dry and wet).

Draft for Enquiry
Draft for Enquiry
- 11 - prHD 631.1 S2:2005
Table 3 — Type tests: tests methods and requirements
Number Property Test method Units Requirements Remarks
category
LMP LI MMP MI
LMPW LIW MMPW MIW
Stage 1 – Components of the resinous compound (prior to mixing)
1 Flash Point     - Epoxy or PUR ASTM D 92 °C > 55 > 55 > 55 > 55
- Acrylic - MSDS value MSDS value MSDS value MSDS value
2 Viscosity at 5 °C EN ISO 2555 Pa.s < 200 < 200 < 200 < 200

3 Tendency to crystallization EN ISO 4895-87 - No turbidity after 7 days (Epoxy resin part A only)
Stage 2 – Resinous compound just after mixing (curing stage)
5 Pot life (0,3 l at 40 °C) 7.3 min > 5 > 5 > 5 > 5
6 Exotherm      - Epoxy or acrylic 7.4.2.3 °C < 200 < 200 < 200 < 200
Peak temperature (at 40 °C)
- PUR 7.4.2.3 °C < 120 < 120 < 120 < 120
Exotherm 7.4.2.1 h
≤ 8 ≤ 8 ≤ 8 ≤ 8
Time to peak (at 5 °C)
7 Curing under water 7.6   For PUR resin type W
only
- Gas volume ml < 10 < 10 < 10 < 10

- Physical structure - no bubbles no bubbles no bubbles no bubbles
8 Dielectric strength EN 60243-1 kV/mm
- - 10 min max. after mixing - > 0,6 - -
- 30 min max. after mixing - - - > 5
Stage 3 - Cured resinous compound (original)
9 Density EN ISO 1675 g/cm Record value Record value Record value Record value
10 Impact strength (without notch) EN ISO 179 kJ/m² > 6 > 6 > 6 > 6

Draft for Enquiry
prHD 631.1 S2:2005 - 12 -
Table 3 — Type tests: tests methods and requirements
Number Property Test method Units Requirements Remarks
category
LMP LI MMP MI
LMPW LIW MMPW MIW
11 Shore hardness EN ISO 868 Record value Record value Record value Record value
12 Tensile EN ISO 527 MPa Record value - Record value -
13 Elongation EN ISO 527 % Record value - Record value -
14 Volume shrinkage EN ISO 3521 % < 6,5 < 6,5 < 6,5 < 6,5
15 Dissipation factor        - at R.T. IEC 60250 - - - - < 0,1
- at 80 °C - - - <
0,3
16 Dielectric constant       - at R.T. IEC 60250 - - - - < 6
- at 80 °C - - - < 8
11 13
17 Volume Resistivity       - at R.T. HD 429 Ω.cm - > 10 - > 10
9 11
- at 80 °C > 10 > 10
Stage 4 - Cured resinous compound after thermal ageing
IV -1 Dry ageing: 28 days at 120 °C (vented oven ) - see 7.5
18 Weight loss Annex B ≤ 5 % ≤ 5 % ≤ 5 % ≤ 5 %
19 Hardness (% retention/original) EN ISO 868 > 80 > 80 > 80 > 80

20 Impact strength (without notch) EN ISO 179 > 65 > 65 > 65 > 65 In the event of no
reference value (when
(% retention/original)
samples do not break) a
min. value of 4,0 kJ/m
is required.
Draft for Enquiry
- 13 - prHD 631.1 S2:2005
Table 3 — Type tests: tests methods and requirements
Number Property Test method Units Requirements Remarks
category
LMP LI MMP MI
LMPW LIW MMPW MIW
21 Dielectric strength EN 60243-1 kV/mm - > 2 - > 5
IV -2 Wet ageing: 28 days at 70 °C in water - see 7.6
22 Hardness (% retention/original) EN ISO 868 % > 80 > 80 > 80 > 80

23 Tensile strength + Elongation EN ISO 527 % > 65 > 65 > 65 > 65
(% ret
...

SLOVENSKI STANDARD
01-junij-2008
1DGRPHãþD
SIST HD 631.1 S1:2002
(OHNWULþQLNDEOL3ULERU=QDþLOQRVWLPDWHULDORYGHO,GHQWLILNDFLMDPDWHULDODLQ
WLSVNLSUHVNXVL]DVPROQH]PHVL
Electric cables - Accessories - Material characterisation - Part 1: Fingerprinting and type
tests for resinous compounds
Kabel und isolierte Leitungen - Garnituren - Materialcharakterisierung - Teil 1: Fingerprínt
- und Typprüfungen für Reaktionsharzmassen
Câbles électriques - Accessoires - Caractérisation des matériaux - Partie 1: Essais
d'identification et essais de type pour les composés résineux
Ta slovenski standard je istoveten z: HD 631.1 S2:2007
ICS:
29.035.20 3ODVWLþQLLQJXPHQLL]RODFLMVNL Plastics and rubber insulating
PDWHULDOL materials
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT
HD 631.1 S2
DOCUMENT D'HARMONISATION
December 2007
HARMONISIERUNGSDOKUMENT
ICS 29.035.20 Supersedes HD 631.1 S1:1998

English version
Electric cables -
Accessories -
Material characterisation -
Part 1: Fingerprinting and type tests for resinous compounds

Câbles électriques -  Kabel und isolierte Leitungen -
Accessoires - Garnituren -
Caractérisation des matériaux - Materialcharakterisierung -
Partie 1: Essais d'identification et essais Teil 1: Fingerprínt- und Typprüfungen
de type pour les composés résineux für Reaktionsharzmassen

This Harmonization Document was approved by CENELEC on 2007-09-01. CENELEC members are bound
to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of
this Harmonization Document at national level.

Up-to-date lists and bibliographical references concerning such national implementations may be obtained
on application to the Central Secretariat or to any CENELEC member.

This Harmonization Document exists in three official versions (English, French, German).

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 631.1 S2:2007 E
Foreword
This Harmonization Document was prepared by a task force under the direction of WG 11 of CENELEC
TC 20, Electric cables.
The text of the draft was submitted to the formal vote and was approved by CENELEC as HD 631.1 S2 on
2007-09-01.
This Harmonization Document supersedes HD 631.1 S1:1998.
The following dates were fixed:
– latest date by which the existence of the HD
has to be announced at national level (doa) 2008-03-01
– latest date by which the HD has to be implemented
at national level by publication of a harmonized
national standard or by endorsement (dop) 2008-09-01
– latest date by which the national standards conflicting
with the HD have to be withdrawn (dow) 2010-09-01
HD 631 will have 4 parts:
Part 1: Fingerprinting and type tests for resinous compounds
Part 2: Fingerprinting and type tests for heat shrinkable components for low voltage applications
Part 3: Fingerprinting for heat shrinkable components for medium voltage applications from 3,6/6 (7,2) kV
up to 20,8/36 (42) kV
Part 4: Fingerprinting for cold shrinkable components for low and medium voltage applications up to
20,8/36 (42) kV
NOTE  It has been assumed in the preparation of this document that the execution of its provisions will be entrusted to appropriately qualified
and experienced people, for whose use it has been produced.
WARNING
This Harmonization Document calls for the use of substances and/or procedures that may be
injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not
absolve the user from legal obligations relating to health and safety at any stage.
__________
- 3 - HD 631.1 S2:2007
Contents
1 Scope.4
2 Normative references.4
3 Terms and definitions.5
4 Classification .6
5 Fingerprinting .6
5.1 General.6
5.2 Sampling.6
5.3 Preparation and conditioning.7
5.4 Sequence of tests.7
5.5 Test report.7
6 Type tests.9

6.1 General.9
6.2 Sampling.9
6.3 Preparation and conditioning.9
6.4 Tests.10

6.5 Test report.10
7 Test methods .14
7.1 General.14
7.2 Pot life .14
7.3 Exotherm peak.15

7.4 Dry ageing.16
7.5 Wet ageing (hydrolytic stability).16
7.6 Curing under water.16

Annex A (informative) Health and safety .19
Annex B (normative) Information on supply, packaging, marking and labelling.20
Annex C (normative) Test methods for fingerprinting – Dry ageing test.21
Annex D (normative) Test sequence and test method for type tests – Dry ageing test.23
Annex E (normative) Test sequence and test method for type test – Wet ageing test
(hydrolytic stability).25

Figure 1 - Test apparatus for curing under water test.18

Table 1 - Categories of resinous compounds.6
Table 2 - Fingerprinting tests: Test methods and requirements .9
Table 3 - Type tests: Test methods and requirements.12

1 Scope
This Harmonization Document specifies the test methods and requirements of tests for

a) fingerprinting (as defined in 3.12),
b) type testing (as defined in 3.13)

of solvent-free polymerizable, reacting resinous compound intended to be used for electrical insulation and
mechanical protection in cable accessories covered by EN 50393, HD 629.1 S2 and HD 629.2 S2, for low
and medium voltage up to 20,8/36 (42) kV.

Fingerprinting and type testing of materials do not have a mandatory link to type testing of accessories.
They shall be regarded as stand-alone tests, but can be carried out in combination with the accessory type
tests.
NOTE Information on health and safety is given in Annex A.

2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

EN 50393, Test methods and requirements for accessories for use on distribution cables of rated voltage
0,6/1,0 (1,2) kV
EN 60243-1, Electrical strength of insulating materials — Test methods — Part 1: Test at power frequencies
(IEC 60243-1)
EN 61234–2, Electrical insulating materials — Methods of test for the hydrolytic stability — Part 2: Moulded
thermosets (IEC 61234-2)
HD 429, Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
(IEC 60093)
HD 629.1 , Test requirements on accessories for use on power cables of rated voltage from 3,6/6(7,2) kV up
to 20,8/36(42) kV — Part 1: Cables with extruded insulation
HD 629.2 , Test requirements on accessories for use on power cables of rated voltage from 3,6/6(7,2) kV up
to 20,8/36(42) kV — Part 2: Cables with impregnated paper insulation
EN ISO 179, Plastics — Determination of Charpy impact strength (ISO 179)
EN ISO 291, Plastics — Standard atmospheres for conditioning and testing (ISO 291)
EN ISO 527 series, Plastics — Determination of tensile properties (ISO 527 series)
EN ISO 868,
Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore
hardness) (ISO 868)
EN ISO 1183 series, Plastics — Methods for determining the density of noncellular plastics
(ISO 1183 series)
EN ISO 2555, Plastics — Resins in the liquid state or as emulsions or dispersions — Determination of
apparent viscosity by the Brookfield test method (ISO 2555)

EN ISO 2592, Determination of flash and fire points — Cleveland open cup method (ISO 2592)
EN ISO 3521, Plastics — Unsaturated polyester and epoxy resins — Determination of overall volume
shrinkage (ISO 3521)
EN ISO 4895, Plastics — Liquid epoxy resins — Determination of tendency to crystallize (ISO 4895)
IEC 60050-461, International Electrotechnical Vocabulary — Chapter 461: Electric cables
IEC 60250, 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
ISO 7056, Plastics laboratory ware — Beakers

- 5 - HD 631.1 S2:2007
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply together with those given in
IEC 60050-461.
3.1
resinous compound
compound for cable accessories made by the mixture of at least two components (resin and reagent)

NOTE For some applications additional components such as filler may be needed.

3.2
resin
liquid organic material that cures as a result of polymerization by means of reagents (e.g. hardener or
accelerator) without releasing additional volatile products

3.3
reagent
substance or compound of substances which causes, when added to resin, hardening of resin by cross-
linking of molecules or accelerates hardening of resin

3.4
pot life
time available to mix the components of the resinous compound together and pour or inject the compound
into the cable accessory, such that it continues to flow smoothly and cohesively

3.5
“use before” date (shelf-life)
date until which a resinous compound, when stored under specified conditions of temperature and humidity,
retains specified properties
3.6
density
ratio of mass to volume
3.7
tendency to crystallization
measurement of the ability of epoxy base resin not to change state (liquid to solid) by a certain temperature
close to water freezing point for a fixed time

3.8
exotherm peak temperature
highest temperature that is reached during the hardening process of a defined volume of a resinous
compound after mixing at a defined temperature

3.9
hardness
measurement of the resistance of a material to indentation by means of durometers or by penetration of a
needle (soft material)
3.10
hydrolytic stability
measurement of the resistance to hydrolytic degradation of resinous compounds exposed to the
simultaneous influence of water and temperature, which may lead to an irreversible change in mechanical
and or electrical properties of the compound

3.11
fingerprinting
tests made to establish and subsequently confirm the properties of materials or components used in cable
accessories
3.12
type test
tests made on materials or components of a cable accessory in order to demonstrate satisfactory
performance characteristics to meet the intended application

3.13
deviation
variation of a property between the initial test values and the test values measured on new samples at a
later date
3.14
initial test
tests made to establish the properties of materials or components used in cable accessories

4 Classification
Resinous compounds are classified according to their application in categories as follows:

Table 1 - Categories of resinous compounds
Function Characteristic
Voltage Class
Low Voltage (L) Mechanical Protection (MP) Cures in water (W)
Medium Voltage ( ) Insulation ) Cures at low temperature (LT)
M (I
Cures at high temperature ( )
HT
A resinous compound is identified by a combination of categories.

For example: Low voltage compound for mechanical protection, curing at high temperature: LMP-HT;
Low voltage compound for insulation, curing in presence of water: LI-W;
LMP/LI
Low voltage compound for insulation & mechanical protection: .

Tests for fingerprinting and type testing are carried out in accordance with each of the resinous compound
categories.
5 Fingerprinting
5.1 General
Tests shall be carried out based on the category of the resinous compound as defined in Table 1.

5.2 Sampling
Samples for fingerprinting shall be taken from material stored under conditions prescribed by the supplier.
The fingerprinting test of resinous compound shall be carried out either:

a) as a stand-alone test. Samples used for the initial test shall be taken from material available as agreed
between supplier and user, or
b) in combination with an accessory type test. Samples used for the initial test shall be taken from the
same batch as those used in the accessory type test. In the event that no material from the same batch
is available, the samples used for the initial test shall be taken from material available as agreed
between supplier and user.
- 7 - HD 631.1 S2:2007
5.3 Preparation and conditioning
5.3.1 General
For all tests, unless otherwise specified, conditioning shall be carried out in accordance with EN ISO 291
using atmosphere 23/50.
5.3.2 Individual components prior to mixing
Components (resin and reagent) shall be individually prepared, conditioned and tested in accordance with
the relevant test method as specified in stage 1 of the sequence of tests given in Table 2. Filler, when
supplied as a separate item, shall not be tested as a component.
5.3.3 Resinous compound just after mixing (curing stage)
Compounds shall be prepared according to the supplier’s instructions, and then tested as specified in stage
2 of the sequence of tests given in Table 2.

5.3.4 Cured resinous compound (original)
Compounds shall be prepared according to supplier’s instructions and cured for 24 h at room temperature
unless otherwise specified in the test method. The specimens shall be post-cured at (80 ± 2) °C for 24 h
unless otherwise specified in the test method and then cooled in a desiccator for 24 h at room temperature.

NOTE  If degassing is needed, it will be indicated in the relevant test method and the conditions for the degassing will also be indicated.

Tests shall then be carried out as specified in stage 3 of the sequence of tests given in Table 2.

5.3.5 Cured resinous compound after thermal ageing (dry)
Compounds shall be prepared as per 5.3.4.

Tests shall then be carried out as specified in stage 4 of the sequence of tests given in Table 2.

5.4 Sequence of tests
Sequences of tests shall be carried out on the resinous compound in the following four stages, in
accordance with Table 2:
Stage 1: individual components prior to mixing;
Stage 2: resinous compound just after mixing (curing stage);
Stage 3: cured resinous compound (original);
Stage 4: cured resinous compound after thermal ageing (dry).

5.5 Test report
The test report shall include the following data:
1) resin category and identification;
2) batch number or identification;
3) marking and labelling according to material safety data sheet (MSDS);
4) test methods and results;
5) major test parameters, including conditioning and calibration, if any;
6) processing conditions to mix the compound;
7) copy of technical data sheet (TDS) and MSDS.

Table 2 — Fingerprinting tests: Test methods and requirements
a
Number Property Test method Units Max. acceptable deviation Comments
Resin categories
LMP/LMPW/ LI/LIW Applies to all combinations with LT or HT resin

MMP/MMPW MI/MIW types
Stage 1 – Individual components prior to mixing
1 Viscosity EN ISO 2555 Pa.s
± 10 % ± 10 %
Stage 2 – Resinous compound just after mixing (curing stage)
2 Pot life (0,3 l at 23 °C) 7.2 min
± 25 % ± 25 %
3 Exotherm at 23 °C 7.3
Peak temperature °C ± 10 % ± 10 %
Time to peak min
± 20 % ± 20 %
Stage 3 – Cured resinous compound (original)
4 Density non-filled compound EN ISO 1183-1 g/cm
± 2 % ± 2 %
Density filled compound EN ISO 1183-1 g/cm
± 5 % ± 5 %
5 Impact strength (without notch) EN ISO 179 kJ/m² ± 25 % ± 25 % Only for Epoxy and Acrylic resins
6 Shore hardness EN ISO 868
± 5 ± 5
7 Tensile strength EN ISO 527 MPa 25 % -
±
8 Elongation at break EN ISO 527 % -
± 25 %
9 Volume resistivity HD 429 .cm - 10 %
Ω ±
Stage 4 – Cured resinous compound after thermal ageing (dry)
10 Weight loss Annex C ± 20 % ± 20 %
11 Change in impact strength (without notch) Annex C ± 25 % ± 25 % Only for Epoxy and Acrylic resins
a
From value for original batch of compound.

- 9 - HD 631.1 S2:2007
6 Type tests
6.1 General
Tests shall be carried out based on the category of the resinous compound as defined in Table 1. These
tests are of such a nature that, once successfully completed, they need not be repeated unless changes are
made in the material, component formulation or manufacturing process, which might change the

performance characteristics.
6.2 Sampling
Samples for type testing shall be taken from material stored under conditions prescribed by the supplier.
The type testing of resinous compound shall be carried out either:

a) as a stand-alone test. Samples used for the type test shall be taken from material available as agreed
between supplier and user, or
b) in combination with an accessory type test. Samples used for the resinous compound type test shall be
taken from the same batch as used in the accessory type test. In the event that no material from the
same batch is available, the samples used for the resinous compound type test shall be taken from
material available as agreed between supplier and user.

6.3 Preparation and conditioning
6.3.1 General
For all tests, unless otherwise specified, conditioning shall be made in accordance with EN ISO 291 using
atmosphere 23/50.
6.3.2 Individual components prior to mixing
Components (resin and reagent) shall be individually prepared, conditioned and tested in accordance with
the relevant test method as specified in stage 1 of the sequence of tests given in Table 3. Filler, when
supplied as a separate item, shall not be tested as a component.

6.3.3 Resinous compound just after mixing (curing stage)
Compounds shall be prepared and mixed according to supplier’s instructions and tested as specified in
stage 2 of the sequence of tests specified in Table 3.

6.3.4 Cured resinous compound (original)
Compounds shall be prepared according to supplier’s instructions and cured for 24 h at room temperature
unless otherwise specified in the test method. The specimens shall be post-cured at (80 ± 2) °C for 24 h
unless otherwise specified in the test method, and then cooled in a desiccator for 24 h at room temperature.

NOTE If degassing is needed, it will be indicated in the relevant test method and the conditions for the degassing will also be indicated.

6.3.5 Cured resinous compound after thermal ageing (dry and wet)
Compounds shall be prepared according to supplier’s instructions and cured for 24 h at room temperature
unless otherwise specified in the test method. The specimens shall be post-cured at (80 ± 2) °C for 24 h
unless otherwise specified in the test method, and then cooled in a desiccator for 24 h at room temperature.

NOTE If degassing is needed, it will be indicated in the relevant test method and the conditions for the degassing will also be indicated.

6.4 Tests
Tests shall be carried out on the resinous compound in the following four stages, in accordance with
Table 3:
Stage 1: individual components prior to mixing;
Stage 2: resinous compound just after mixing (curing stage);
Stage 3: cured resinous compound (original);
Stage 4: cured resinous compound after thermal ageing (dry and wet).

6.5 Test report
The test report shall include the following data:
1) resin category and identification;
2) batch number or identification;
3) marking and labelling according to the MSDS;
4) test results;
5) major test parameters, including conditioning and calibration, if any;
6) processing conditions used to mix the compound;
7) copy of TDS and MSDS.
- 11 - HD 631.1 S2:2007
Table 3 – Type tests: Test methods and requirements
Number Property Test method Units Requirements Remarks
category
LMP LI MMP MI
LMPW LIW MMPW MIW
Stage 1 – Components of the resinous compound (prior to mixing)
1 Flash Point - Epoxy or PUR EN ISO 2592 °C > 55 > 55 > 55 > 55
- Acrylic - MSDS value MSDS value MSDS value MSDS value
2 Viscosity at 5 °C EN ISO 2555 Pa.s 100 100 100 100
≤ ≤ ≤ ≤
3 Tendency to crystallization EN ISO 4895 - No turbidity after 7 days (Epoxy resin part A only)

Stage 2 – Resinous compound just after mixing (curing stage)
5 Pot life (0,3 l at 5 °C) 7.2 min < 75 < 75 < 75 < 75 For resin type LT
Pot life (0,3 l at 40 °C) min For resin type HT
≥ 5 ≥ 5 ≥ 5 ≥ 5
6 Exotherm at 40 °C 7.3 °C
Peak temperature - Epoxy or acrylic ≤ 200 ≤ 200 ≤ 200 ≤ 200 Time to peak
to be recorded
Exotherm at 40 °C 7.3 °C
Peak temperature - PUR ≤ 120 ≤ 120 ≤ 120 ≤ 120 Time to peak
to be recorded
7 Curing under water 7.6   For PUR resin type W only
- Gas volume ml < 10 < 10 < 10 < 10
- Physical structu
...