EN 50363-8:2005

Insulating, sheathing and covering materials for low voltage energy cables - Part 8: Halogen-free, thermoplastic sheathing compounds

This part of EN 50363 specifies the requirements for the physical properties of the harmonised halogen-free thermoplastic sheathing compound given in Table 1. The relevant test methods for verification of compliance are given in EN 60811 (series), EN 50267 2 series, EN 60684-2, EN 50396 and HD 21.14.

Isolier-, Mantel- und Umhüllungswerkstoffe für Niederspannungskabel und -leitungen - Teil 8: Halogenfreie, thermoplastische Mantelmischungen

Dieser Teil der EN 50363 legt die Anforderungen an halogenfreie, thermoplastische Mantelmischungen fest, die in Tabelle 1 aufgeführt sind. Die entsprechenden Prüfverfahren sind in den Normen der Reihe EN 60811, der Reihe EN 50267-2, EN 60684-2, EN 50396 und HD 21.14 beschrieben.

Matériaux pour enveloppe isolante, gainage et revêtement pour les câbles d'énergie basse tension - Partie 8: Mélanges thermoplastiques sans halogène pour gaine

La présente partie de la EN 50363 mentionne les exigences des essais pour les propriétés physiques de mélange(s) thermoplastique(s) sans halogène pour gainage, donnés dans le Tableau 1. Les méthodes d’essais appropriées sont données dans la série EN 60811, la série EN 50267 2, la EN 60684 2, la EN 50396 et le HD 21.14.

Materiali za izoliranje, oplaščenje in prevleke nizkonapetostnih energetskih kablov - 8. del: Plastomerne mase za oplaščenje brez halogenov

General Information

• Status: Published
• Publication Date: 24-Nov-2005
• Withdrawal Date: 31-Oct-2007
• 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: 9093 - Decision to confirm - Review Enquiry
• Start Date: 23-Oct-2024
• Completion Date: 23-Sep-2025
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: SIST EN 50363-8:2006 - Insulating, sheathing and covering materials for low voltage energy cables -- Part 8: Halogen-free, thermoplastic sheathing compounds

Relations

• Amended By: EN 50363-8:2005/A1:2011 - Insulating, sheathing and covering materials for low voltage energy cables - Part 8: Halogen-free, thermoplastic sheathing compounds
• Effective Date: 28-Jan-2023

Overview

EN 50363-8:2005 (CLC) defines the physical property requirements and verification tests for harmonised halogen-free thermoplastic sheathing compounds used on low-voltage energy cables. The standard focuses on material performance for TM7 type sheaths (maximum operating temperature 70 °C) and sets limits and test methods to ensure consistency, durability and reduced halogen emissions in service.

Key test standards referenced for verification include the EN 60811 series, EN 50267-2 series, EN 60684-2, EN 50396 and HD 21.14. EN 50363-8:2005 is intended to be read in conjunction with EN 50363-0.

Key Topics

• Scope and type

  • Covers halogen-free thermoplastic sheathing compounds listed in Table 1 (TM7, max. 70 °C).

• Mechanical properties

  • Tensile strength (before ageing): median minimum 7.5 N/mm².
  • Elongation at break (before ageing): median minimum 150%.
  • Ageing in air oven: ageing conditions specified (80 ± 2 °C for 7 × 24 h) with limits on variation after ageing.

• Low-temperature performance

  • Bending and elongation tests at −15 ± 2 °C to verify flexibility and elongation without break (minimum 30%).

• Pressure and indentation

  • High-temperature pressure/indentation tests to assess deformation under load (maximum permitted depth values given in Table 2).

• Ozone and environmental resistance

  • Ozone resistance tests (Method A and Method B) with defined concentrations and durations; no cracking permitted.
  • Water immersion tests (70 ± 2 °C for 7 × 24 h) with allowable variation limits for tensile strength and elongation.

• Halogen assessment and emissions

  • pH: minimum 4.3 (assessment of extract).
  • Conductivity: maximum 10 µS/mm.
  • Acid gas limits: HCl and HBr maximum 0.5% by test method EN 50267-2-1; HF maximum 0.1% by EN 60684-2 (with exceptions per HD 21.14).

Applications

• Ensures that sheath compounds for low-voltage energy cables meet consistent mechanical, thermal and chemical performance criteria.
• Supports safer installations by specifying halogen-free formulations that limit corrosive acidic gases and reduce toxic by-products in fire scenarios at the material level.
• Useful for cable manufacturers, material suppliers, testing laboratories and compliance teams specifying TM7 sheathing compounds for ordinary-duty low-voltage cables.

Related Standards

• EN 50363-0 - General requirements and cross-references for cable insulating, sheathing and covering materials.
• EN 60811 (series) - Test methods for electric cable materials (mechanical, thermal, ageing tests).
• EN 50267-2 (series) and EN 60684-2 - Assessment of halogen acid gas emission and related extract tests.
• EN 50396 - Ozone resistance and related procedures.
• HD 21.14 - Water immersion and supplementary test methods.

For specification or procurement, refer to the full EN 50363-8:2005 text and the referenced test standards for exact test procedures, tolerances and sampling rules.

Standards Content (Sample)

SLOVENSKI SIST EN 50363-8:2006

STANDARD
oktober 2006
Materiali za izoliranje, oplaščenje in prevleke nizkonapetostnih energetskih
kablov - 8. del: Plastomerne mase za oplaščenje brez halogenov
Insulating, sheathing and covering materials for low voltage energy cables - Part 8:
Halogen-free, thermoplastic sheathing compounds
ICS 29.035.20; 29.060.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 50363-8
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2005

ICS 29.035.20
English version
Insulating, sheathing and covering materials
for low voltage energy cables
Part 8: Halogen-free, thermoplastic sheathing compounds

Matériaux pour enveloppe isolante, Isolier-, Mantel- und
gainage et revêtement pour les câbles Umhüllungswerkstoffe für
d'énergie basse tension Niederspannungskabel und -leitungen
Partie 8: Mélanges thermoplastiques sans Teil 8: Halogenfreie, thermoplastische
halogène pour gaine Mantelmischungen

This European Standard was approved by CENELEC on 2005-11-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

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.

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.

Ref. No. EN 50363-8:2005 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 20, Electric cables.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50363-8
on 2005-11-01.
EN 50363 (in all its parts) supersedes the equivalent information at present in HD 21.1 S4,
HD 21.14 S1, HD 22.1 S4, HD 22.10 S1, HD 22.14 S2 and prHD 21.15 S1. The existing information in
these HDs will be deleted at the next maintenance review.
EN 50363-8 should be read in conjunction with EN 50363-0.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-11-01
__________
– 3 – EN 50363-8:2005
Contents
1 Scope.4
2 Normative references.4
3 Definitions.4
4 Properties.4
Table 1 – Types of halogen-free thermoplastic sheathing compound .4
Table 2 – Requirements for the tests for halogen-free thermoplastic sheathing compounds.5

1 Scope
This part of EN 50363 specifies the requirement
...