SIST EN 50525-3-11:2011

Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 3-11: Cables with special fire performance - Flexible cables with halogen-free thermoplastic insulation, and low emission of smoke

EN 50525-3-11 applies to flexible cables, insulated and sheathed with halogen-free thermoplastic compound and having low emission of smoke and corrosive gases when exposed to fire. NOTE 1   Low emission of smoke is checked in accordance with EN 61034-2. Low emission of corrosive gases is checked as part of the check for absence of halogens (see Annex B of EN 50525-1). The cables are of rated voltages U0/U up to and including 300/500 V. The cables are intended for the connection of domestic appliances to the fixed supply. Circular cables and flat cables are included. The maximum conductor operating temperature for each of the cables in this standard is 70 °C. NOTE 2   HD 516 contains extensive guidance on the safe use of cables in this standard. This EN 50525-3-11 should be read in conjunction with EN 50525-1, which specifies general requirements.

Kabel und Leitungen - Starkstromleitungen mit Nennspannungen bis 450/750 V (U0/U) - Teil 3-11: Leitungen mit verbessertem Verhalten im Brandfall - Flexible halogenfreie, raucharme Leitungen mit thermoplastischer Isolierung

Câbles électriques - Câbles d’énergie basse tension de tension assignée au plus égale à 450/750 V (U0/U) - Partie 3-11: Câbles à performances spéciales au feu - Câbles souples isolés en matériau thermoplastique sans halogène, à faible dégagement de fumée

Električni kabli - Nizkonapetostni energetski kabli z nazivno napetostjo do vključno 450/750 V (U0/U) - 3-11. del: Kabli s posebnimi ognjevarnimi lastnostmi - Zvijavi kabli s termoplastično izolacijo brez halogenov in z nizko emisijo dima

EN 50525-3-11 velja za zvijave kable, ki so oplaščeni in imajo termoplastično izolacijo brez halogenov ter nizko emisijo dima in korozivnih plinov pri izpostavljenosti ognju. Nizka emisija korozivnih plinov se preverja kot del kontrole, da ni prisotnih halogenov. Ti kabli imajo nazivno napetost U0/U do vključno 300/500 V. Povezujejo gospodinjske aparate s fiksnim napajanjem. Vključeni so okrogli in ravni kabli. Maksimalna delovna temperatura pretvornika za vsakega od kablov iz tega standarda je 70 °C.

General Information

• Status: Published
• Public Enquiry End Date: 28-Feb-2009
• Publication Date: 12-Jun-2011
• ICS: 29.060.20 - Cables
• Technical Committee: IEKA - Electric cables
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 08-Jun-2011
• Due Date: 13-Aug-2011
• Completion Date: 13-Jun-2011
• Directive: Not Harmonized2006/95/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)
  OJ Ref: C 348/03 OJ Date: 28-Nov-2013 Conflicting Date: 17-Jan-2014
• Directive:

  ---

  Harmonized Standard2014/35/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
  OJ Ref: C 249/03 OJ Date: 08-Jul-2016
• Ref Project: EN 50525-3-11:2011 - Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 3-11: Cables with special fire performance - Flexible cables with halogen-free thermoplastic insulation, and low emission of smoke

Relations

• Replaces: SIST HD 21.14 S1:2004 - Cables of rated voltage up to and including 450/750 V and having thermoplastic insulation - Part 14: Flexible cables (cords), insulated and sheathed with halogen-free thermoplastic compounds
• Effective Date: 07-Jun-2022
• Referred By: SIST EN 1648-1:2018 - Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 1: Caravans
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 1648-2:2018 - Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 2: Motor caravans
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 60335-1:2012/A13:2017 - Household and similar electrical appliances - Safety - Part 1: General requirements
• Effective Date: 03-Feb-2026
• Revised: SIST HD 21.14 S1:2004 - Cables of rated voltage up to and including 450/750 V and having thermoplastic insulation - Part 14: Flexible cables (cords), insulated and sheathed with halogen-free thermoplastic compounds
• Effective Date: 06-Jan-2009

Overview

SIST EN 50525-3-11:2011 is a European standard that specifies requirements for low voltage energy cables with special fire performance. It applies to flexible cables with halogen-free thermoplastic insulation and sheath, designed for rated voltages up to and including 300/500 V. These cables are distinguished by their low emission of smoke and corrosive gases when exposed to fire, making them a safer choice for environments where fire safety is critical. Both flat and circular cable designs are included under this scope. The standard is issued by the Slovenian Institute for Standardization (SIST) and aligns directly with EN 50525-3-11.

Key Topics

• Halogen-Free Thermoplastic Insulation and Sheath: Limits the release of toxic halogen gases during fire, protecting people and sensitive equipment.
• Low Smoke Emission: Ensures high levels of smoke transparency according to EN 61034-2, providing safer evacuation routes in case of fire.
• Corrosive Gas Control: Minimizes damage to building infrastructure and electronic systems by reducing corrosive emissions.
• Flexible Cable Types: Covers both light duty (H03Z1Z1-F, H03Z1Z1H2-F) and ordinary duty (H05Z1Z1-F, H05Z1Z1H2-F) cables.
• Operating Conditions: Rated for maximum conductor temperature of 70 °C.
• Compliant Testing Methods: Testing procedures include electrical, mechanical, fire, and chemical resistance, referencing methods from EN 61034-2, EN 50395, EN 50396, and others.

Applications

The electric cables covered by SIST EN 50525-3-11:2011 are designed for a range of low voltage installations, notably:

• Domestic Appliance Connections: Ideal for connecting appliances such as washing machines, refrigerators, and kitchen devices to fixed power supplies.
• Public Buildings and Infrastructures: Essential in locations where minimizing smoke and harmful emissions during fire is required, such as hospitals, schools, office complexes, airports, and transport hubs.
• Commercial Installations: Used in commercial centers and IT facilities to protect sensitive electronics from corrosive gases.
• Retrofit and New Constructions: Suitable for both upgrades and new builds where fire safety standards are a priority.
• Underground and Concealed Installations: Appropriate for spaces with limited ventilation, as halogen-free, low smoke cables prevent hazardous buildup in case of fire.

Key Benefits:

• Enhanced fire safety for occupants and first responders.
• Reduced environmental and equipment damage during fire events.
• Compliance with modern fire performance regulations and best practices.

Related Standards

To ensure comprehensive safety and reliability, SIST EN 50525-3-11:2011 is intended to be used in conjunction with several related standards:

• EN 50525-1: General requirements for low voltage energy cables.
• EN 61034-2: Procedures for measuring smoke density of cables during fire.
• EN 50363-7 & EN 50363-8: Specifications for halogen-free thermoplastic insulating and sheathing materials.
• EN 50395 & EN 50396: Test methods for electrical and non-electrical properties.
• EN 60228: Standards for conductors in insulated cables.
• EN 60332-1-2: Fire testing for single cable flame propagation.
• HD 516: Guidelines for safe use of low voltage harmonized cables.
• HD 21.14: Historical standard replaced by EN 50525-3-11.

Staying aligned with these electrical cable standards ensures optimal performance, interoperability, and legal compliance across Europe and internationally.

---

Keywords: halogen-free cables, low smoke cables, electric cable fire performance, flexible energy cables, low voltage cable standards, SIST EN 50525-3-11, safety cables, domestic appliance cabling, smoke emission, corrosive gas, European cable standard, building wiring standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2011
(OHNWULþQLNDEOL1L]NRQDSHWRVWQLHQHUJHWVNLNDEOL]QD]LYQRQDSHWRVWMRGR
YNOMXþQR988GHO.DEOLVSRVHEQLPLRJQMHYDUQLPLODVWQRVWPL
=YLMDYLNDEOLVWHUPRSODVWLþQRL]RODFLMREUH]KDORJHQRYLQ]QL]NRHPLVLMRGLPD
Electric cables - Low voltage energy cables of rated voltages up to and including 450/750
V (U0/U) - Part 3-11: Cables with special fire performance - Flexible cables with halogen-
free thermoplastic insulation, and low emission of smoke
Kabel und Leitungen - Starkstromleitungen mit Nennspannungen bis 450/750 V (U0/U) -
Teil 3-11: Leitungen mit verbessertem Verhalten im Brandfall - Flexible halogenfreie,
raucharme Leitungen mit thermoplastischer Isolierung
Câbles électriques - Câbles d’énergie basse tension de tension assignée au plus égale à
450/750 V (U0/U) - Partie 3-11: Câbles à performances spéciales au feu - Câbles
souples isolés en matériau thermoplastique sans halogène, à faible dégagement de
fumée
Ta slovenski standard je istoveten z: EN 50525-3-11:2011
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50525-3-11
NORME EUROPÉENNE
May 2011
EUROPÄISCHE NORM
ICS 29.060.20 Supersedes HD 21.14 S1:2003

English version
Electric cables -
Low voltage energy cables of rated voltages up to and including 450/750 V
(U /U) -
Part 3-11: Cables with special fire performance -
Flexible cables with halogen-free thermoplastic insulation, and low
emission of smoke
Câbles électriques -  Kabel und Leitungen -
Câbles d’énergie basse tension de tension Starkstromleitungen mit Nennspannungen
assignée au plus égale à 450/750 V bis 450/750 V (U /U) -
(U /U) - Teil 3-11: Starkstromleitungen mit
Partie 3-11: Câbles à performances verbessertem Verhalten im Brandfall -
spéciales au feu - Flexible halogenfreie, raucharme
Câbles souples isolés en matériau Leitungen mit thermoplastischer Isolierung
thermoplastique sans halogène, à faible
dégagement de fumée
This European Standard was approved by CENELEC on 2011-01-17. 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, 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, 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

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50525-3-11:2011 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 50525-3-11 on 2011-01-17.
This document, which is one of a multipart series, supersedes HD 21.14 S1:2003.

Attention is drawn to the possibility that some of the elements of this document may be the
subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any
or all such patent rights.
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) 2012-01-17

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-01-17

_____________
- 3 - EN 50525-3-11:2011
Contents
Page
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 General purpose cables . 5
4.1 Light duty cables – H03Z1Z1-F and H03Z1Z1H2-F . 5
4.2 Ordinary duty cables – H05Z1Z1-F and H05Z1Z1H2-F . 6
Annex A (normative) Tests for cables to EN 50525-3-11 . 8
Annex B (normative) General data . 9
Annex C (normative) Requirements for compatibility test . 11
C.1 Test conditions . 11
C.2 Requirements . 11
Annex D (normative) Water immersion test on sheath . 12
D.1 G e ner a l . 12
D.2 Sampling and preparation of test pieces . 12
D.3 Procedure . 12
D.4 Evaluation of results . 12
Bibliography . 13

Tables
Table A.1 . 8
Table B.1 . 9
Table B.2 . 10
Table C.1 . 11

1 Scope
EN 50525-3-11 applies to flexible cables, insulated and sheathed with halogen-free
thermoplastic compound and having low emission of smoke and corrosive gases when
exposed to fire.
NOTE 1  Low emission of smoke is checked in accordance with EN 61034-2. Low emission of corrosive gases is checked as
part of the check for absence of halogens (see Annex B of EN 50525-1).
The cables are of rated voltages U /U up to and including 300/500 V.
The cables are intended for the connection of domestic appliances to the fixed supply.
Circular cables and flat cables are included.
The maximum conductor operating temperature for each of the cables in this standard is
70 °C.
NOTE 2  HD 516 contains extensive guidance on the safe use of cables in this standard.
This EN 50525-3-11 should be read in conjunction with EN 50525-1, which specifies general
requirements.
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.
NOTE  One or more references to the standards below are in respect of a specific sub-division of that standard,
for instance a clause, a table, a class or a type. Cross-references to these standards are undated and, at all times,
the latest version applies.
EN 50363-7 Insulating, sheathing and covering materials for low voltage
energy cables - Part 7: Halogen-free, thermoplastic insulating
compounds
EN 50363-8 Insulating, sheathing and covering materials for low voltage
energy cables - Part 8: Halogen-free, thermoplastic sheathing
compounds
EN 50395 Electrical test methods for low voltage energy cables
EN 50396 Non electrical test methods for low voltage energy cables
EN 50525-1 Electric cables - Low voltage energy cables of rated voltages up
to and including 450/750 V (U /U) - Part 1: General requirements
EN 60228 Conductors of insulated cables (IEC 60228)
EN 60332-1-2 Tests on electric and optical fibre cables under fire conditions -
Part 1-2: Test for vertical flame propagation for a single
insulated wire or cable - Procedure for 1 kW pre-mixed flame
(IEC 60332-1-2)
EN 60811-1-1 Insulating and sheathing materials of electric and optical cables -
Common test methods - Part 1-1: General application -
Measurement of thickness and overall dimensions - Tests for
determining the mechanical properties (IEC 60811-1-1)
EN 60811-1-2 Insulating and sheathing materials of electric and optical cables -
Common test methods - Part 1-2: General application - Thermal
ageing methods (IEC 60811-1-2)
EN 60811-1-4 Insulating and sheathing materials of electric and optical cables -
Common test methods - Part 1-4: General application - Tests at
low temperature (IEC 60811-1-4)

- 5 - EN 50525-3-11:2011
EN 61034-2 Measurement of smoke density of cables burning under defined
conditions - Part 2: Test procedure and requirements
(IEC 61034-2)
3 Terms and d
...