EN 50655-1:2023

Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for resinous compounds

This document specifies the test methods and requirements of tests for fingerprinting (as defined in 3.9) of solvent-free polymerizable, reacting resinous compound intended to be used for electrical insulation and/or mechanical protection in cable accessories covered by EN 50393, HD 629.1 and HD 629.2, for low and medium voltage up to 20,8/36 (42) kV. Fingerprinting testing of materials does not have a mandatory link to type testing of accessories. It is regarded as stand-alone tests, but it 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: Fingerprintprüfungen für Reaktionsharzmassen

Dieses Dokument Norm legt die Prüfverfahren und Anforderungen für Fingerprintprüfung (entsprechend 3.9), an lösemittelfreien aushärtbaren Reaktionsharzmassen, die als elektrische Isolierung und/oder mechanischer Schutz für Kabelgarnituren nach EN 50393, HD 629-1 und HD 629-2 fest, die für Nieder- und Mittelspannung bis 20,8/36 (42) kV eingesetzt werden. Fingerprintprüfung an Werkstoffen ist nicht zwingend mit Typprüfungen von Garnituren verbunden. Sie wird als eigenständige Prüfung betrachtet, kann 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 pour les composés résineux

Le présent document spécifie les méthodes et les exigences d’essai pour les essais d’identification (tels qu’ils sont définis en 3.9) des composés résineux réactifs polymérisables sans solvant destinés à être utilisés pour l’isolation électrique et/ou la protection mécanique dans les accessoires de câbles couverts par l'EN 50393, le HD 629.1 et le HD 629.2, pour la basse et la moyenne tension jusqu’à 20,8/36 (42) kV. Il n’existe pas obligatoirement de lien entre les essais d’identification des matériaux et les essais de type des accessoires. Ils sont considérés comme des essais indépendants, mais ils peuvent être réalisés conjointement avec les essais de type des accessoires. NOTE Des informations concernant la santé et la sécurité sont données à l'Annexe A.

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

Ta dokument določa preskusne metode in zahteve preskusov za identifikacijo materiala (kot je opredeljeno v točki 3.9) za reagirajoče smolne zmesi, ki jih je mogoče polimerizirati, ne vsebujejo topil ter se predvidoma uporabljajo za električno izolacijo in/ali mehansko zaščito v kabelskih pripomočkih za uporabo v nizko- in srednjenapetostnih sistemih z napetostjo do 20,8/36 (42) kV, kot je opredeljeno v standardih EN 50393, HD 629.1 in HD 629.2.
Preskušanje materialov na podlagi identifikacije se ne povezuje nujno s tipskim preskušanjem pripomočkov. Obravnava se kot sklop samostojnih preskusov, vendar se lahko izvaja v kombinaciji s tipskimi preskusi pripomočkov.
OPOMBA: Podatki o varovanju zdravja in varnosti so podani v dodatku A.

General Information

• Status: Published
• Publication Date: 02-Nov-2023
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: CLC/TC 20 - Electric cables
• Drafting Committee: CLC/TC 20/WG 11 - Harmonisation of joints, accessories and terminations of electric cables
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 03-Nov-2023
• Due Date: 08-Jan-2025
• Completion Date: 03-Nov-2023
• Ref Project: SIST EN 50655-1:2023 - Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for resinous compounds

Relations

• Replaces: EN 50655-1:2017 - Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for resinous compounds
• Effective Date: 30-Aug-2022

Overview

EN 50655-1:2023 - Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for resinous compounds (CLC/CENELEC) establishes test methods and acceptance criteria for fingerprinting solvent‑free polymerizable, reacting resinous compounds used for electrical insulation and mechanical protection in cable accessories (EN 50393, HD 629.1, HD 629.2) for low and medium voltage up to 20,8/36 (42) kV. Fingerprinting is intended to identify and subsequently confirm material properties and may be carried out as a stand‑alone check or together with accessory type tests.

Key topics and requirements

• Scope and categories: Applies to polyurethane, polybutadiene, epoxy and silicone resinous compounds (separate test tables are provided).
• Three-stage test sequence:
  • Stage 1 - Individual components prior to mixing (resin and reactive component).
  • Stage 2 - Resinous compound just after mixing (curing stage).
  • Stage 3 - Cured resinous compound (original).
• Sampling & conditioning:
  • Samples taken from material stored per supplier instructions.
  • Conditioning per EN ISO 291 (23/50 atmosphere).
  • Detailed preparation instructions (homogenisation, mixing times, post‑cure at 80 ± 2 °C unless otherwise specified).
• Core fingerprinting tests and parameters:
  • Viscosity (EN ISO 2555) - specified spindles and measurement ranges; max deviation ±40 % for components.
  • Pot life (EN 60455‑2) - test with 0.3 L at 23 °C to reach 50 Pa·s; max deviation ±30 %.
  • Exothermic peak temperature (EN 60455‑2) - max deviation ±10 K for applicable resins.
  • Density (EN ISO 1183‑1) - max deviation ±10 %.
  • Shore hardness (EN ISO 868) - valid durometer ranges and sampling; max deviation ±10 Shore.
  • Curing in presence of water - for category W, no deviation permitted.
• Test report requirements: include compound ID, supplier, batch, MSDS/TDS, test methods/results, processing and calibration details.
• Safety: Annex A provides health and safety information; standard warns about hazardous procedures/substances.

Practical applications and users

EN 50655-1:2023 is used by:

• Cable accessory manufacturers for material qualification and QA.
• Independent test laboratories performing fingerprinting and comparative checks.
• Specifiers, procurement and quality engineers verifying supplier materials.
• R&D teams assessing batch consistency, shelf‑life and process control.

Benefits include improved material traceability, consistent production quality, and a harmonized approach for confirming resin properties across low/medium voltage cable accessory supply chains.

Related standards

• EN 60455‑1 / EN 60455‑2 (resin definitions and test methods)
• EN ISO 2555 (viscosity), EN ISO 1183‑1 (density), EN ISO 868 (Shore hardness)
• EN ISO 291 (conditioning)
• IEC 60050‑461 (vocabulary)
• EN 50393, HD 629.1, HD 629.2 (cable accessories)

Keywords: EN 50655-1:2023, fingerprinting, resinous compounds, cable accessories, material characterization, viscosity, pot life, Shore hardness, low and medium voltage.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Električni kabli - Pribor - Značilnosti materialov - 1. del: Identifikacija materiala za
smolne zmesi
Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for
resinous compounds
Kabel und isolierte Leitungen - Garnituren - Materialcharakterisierung - Teil 1:
Fingerprintprüfungen für Reaktionsharzmassen
Câbles électriques - Accessoires - Caractérisation des matériaux - Partie 1: Essais
d'identification pour les composés résineux
Ta slovenski standard je istoveten z: EN 50655-1:2023
ICS:
29.035.20 Plastični in gumeni izolacijski Plastics and rubber insulating
materiali materials
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50655-1
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2023
ICS 29.035.20 Supersedes EN 50655-1:2017
English Version
Electric cables - Accessories - Material characterization - Part 1:
Fingerprinting for resinous compounds
Câbles électriques - Accessoires - Caractérisation des Kabel und isolierte Leitungen - Garnituren -
matériaux - Partie 1: Essais d'identification pour les Materialcharakterisierung - Teil 1: Fingerprintprüfungen für
composés résineux Reaktionsharzmassen
This European Standard was approved by CENELEC on 2023-10-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50655-1:2023 E
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Fingerprinting . 7
4.1 General . 7
4.2 Sampling . 7
4.3 Preparation and conditioning . 8
4.4 Sequence of tests . 8
4.5 Test report . 8
Annex A (informative) Health and safety . 13
Bibliography . 14

Tables
Table 1 — Fingerprinting tests — Test methods and requirements for Polyurethane resins . 9
Table 2 — Fingerprinting tests — Test methods and requirements for Polybutadiene resins 10
Table 3 — Fingerprinting tests — Test methods and requirements for Epoxy resins . 11
Table 4 — Fingerprinting tests — Test methods and requirements for Silicone resins . 12

European foreword
This document (EN 50655-1:2023) has been prepared by CLC/TC 20 “Electric cables”.
The following dates are fixed:
– latest date by which this document has (dop) 2024–10–16
to be implemented at national level by
publication of an identical national
standard or by endorsement
– latest date by which the national (dow) 2026–10–16
standards conflicting with this document
have to be withdrawn
This document supersedes EN 50655-1:2017.
a) Description of sample preparation (4.3.2);
b) Introduction of separate tables for Polyurethane, Polybutadiene, Epoxy and Silicone resins for
fingerprinting tests;
c) Detailed definition of test parameters, e.g. determination of the spindle for the viscosity
measurement, valid measurement range for Shore hardness;
d) Revision of max. acceptable deviation (Tables 1-4).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
EN 50655 series consists of the following:
– EN 50655-1, Electric cables - Accessories - Material characterization - Part 1: Fingerprinting for
resinous compounds;
– EN 50655-2, Electric cables - Accessories - Material characterization - Part 2: Fingerprinting for heat
shrinkable components for low and medium voltage applications up to 20,8/36 (42) kV;
– EN 50655-3, Electric cables - Accessories - Material characterization - Part 3: Fingerprinting for cold
shrinkable components for low and medium voltage applications up to 20,8/36 (42) kV.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.

Introduction
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 European Standard 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.
1 Scope
This document specifies the test methods and requirements of tests for fingerprinting (as defined in 3.9) of
solvent-free polymerizable, reacting resinous compound intended to be used for electrical insulation and/or
mechanical protection in cable accessories covered by EN 50393, HD 629.1 and HD 629.2, for low and
medium voltage up to 20,8/36 (42) kV.
Fingerprinting testing of materials does not have a mandatory link to type testing of accessories. It is
regarded as stand-alone tests, but it 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 documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 60455-1, Resin based reactive compounds used for electrical insulation — Part 1: Definitions and
general requirements (IEC 60455-1)
EN 60455-2, Resin based reactive compounds used for electrical insulation — Part 2: Methods of test
(IEC 60455-2)
EN ISO 291, Plastics — Standard atmospheres for conditioning and testing (ISO 291)
EN ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer
(Shore hardness) (ISO 868)
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1:
Immersion method, liquid pycnometer method and titration method (ISO 1183-1)
EN ISO 2555, Plastics — Resins in the liquid state or as emulsions or dispersions — Determination of
apparent viscosity using a single cylinder type rotational viscometer method (ISO 2555)
IEC 60050-461, International Electrotechnical Vocabulary — Part 461: Electric cables
ISO 2137, Petroleum products and lubricants — Determination of cone penetration of lubricating greases
and petrolatum
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-461 and EN 60455-1 and
the following apply.
3.1
resinous compound
compound for cable accessories made by the mixture of at least two components (resin and reactive
component)
Note 1 to entry: 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 reactive component
(e.g. hardener or accelerator) without releasing additional volatile products
3.3
reactive component
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
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
3.8
hardness
measurement of the resistance of a material to indentati
...