SIST EN 50525-3-11:2011

• Abstract:

  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.

• 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: 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)
  OJ Ref: C 348/03 OJ Date: 28-Nov-2013 Conflicting Date: 17-Jan-2014
• 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
  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

• 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

SIST EN 50525-3-11:2011 is a CENELEC European Standard adopted by SIST for flexible low-voltage energy cables with halogen-free thermoplastic insulation and low smoke emission. It specifies the construction, dimensions, tests and marking for cables intended to connect domestic appliances to the fixed supply, at rated voltages up to and including 300/500 V. The standard covers both circular and flat cables, in light duty and ordinary duty versions.

What does SIST EN 50525-3-11:2011 specify?

SIST EN 50525-3-11:2011 specifies a family of flexible appliance connection cables with special fire performance. It gives the cable types, material requirements, dimensions, test regime and marking rules, and it is to be read together with EN 50525-1 for the general requirements.

The document is organized into four clauses and four normative annexes.

Annex	What it covers
Annex A	Test schedule for cables to EN 50525-3-11
Annex B	General data, including dimensions and minimum insulation resistance
Annex C	Compatibility test requirements after heat ageing
Annex D	Water immersion test on the sheath

Clause 4 separates the product family into light duty cables and ordinary duty cables, with different conductor sizes, core counts and reference markings.

What are the key requirements of SIST EN 50525-3-11:2011?

SIST EN 50525-3-11:2011 fixes both the build of the cable and the checks that prove it meets the intended fire and mechanical performance. In practice, a manufacturer needs to match the construction in Clause 4 and then verify the cable against the tests in Annex A and the data in Annex B.

Cable construction and identification

Clause 4 requires class 5 conductors to EN 60228, halogen-free thermoplastic insulation of type TI 6, and thermoplastic sheath material of type TM 7. The marking is the CENELEC code, either H03Z1Z1-F or H03Z1Z1H2-F for light duty cables, and H05Z1Z1-F or H05Z1Z1H2-F for ordinary duty cables. This matters because the code tells users the intended duty, shape and construction at a glance.

Light duty and ordinary duty ranges

Clause 4 gives separate cable ranges. Light duty covers circular cables with 0.5 mm² or 0.75 mm² conductors in 2, 3 or 4 cores, and flat cables in 2-core form only. Ordinary duty covers circular cables from 0.75 mm² to 4 mm² in 2, 3, 4 or 5 cores, and flat cables in 2-core form only at 0.75 mm² and 1.0 mm². This is the basic selection step for specifiers and buyers.

Fire performance and smoke behaviour

The scope requires low smoke emission and low corrosive-gas behaviour when exposed to fire. The standard points to EN 61034-2 for smoke density, and Annex A includes the vertical flame test and smoke emission test. For both cable groups, the smoke test result has to stay above 60% light transmittance throughout the test, which is the practical acceptance point for low smoke behaviour.

Dimensional and material checks

Annex B gives the dimensional data for each cable build, including insulation thickness, sheath thickness, overall dimensions and minimum insulation resistance. Annex A also calls up checks on conductor resistance, insulation resistance, sheath surface resistance, thickness measurements and visual compliance with the construction rules. These are the routine production and incoming checks used to confirm that the finished cable matches the declared type.

Compatibility and sheath durability

Annex C sets the compatibility test after seven days at 80 ± 2 °C. After ageing, the insulation and sheath must stay within the permitted change limits for tensile strength and elongation at break. Annex D gives the water immersion test on the sheath, which compares mechanical properties before and after immersion. These tests matter because they check whether the materials stay usable after heat and water exposure.

What terms does SIST EN 50525-3-11:2011 define?

• U0/U - the rated voltage notation used for the cable family, expressed as conductor-to-earth and conductor-to-conductor voltage.
• Class 5 conductor - a flexible conductor class to EN 60228, used here to suit movable appliance cords.
• TI 6 - the halogen-free thermoplastic insulation compound specified for the cores.
• TM 7 - the halogen-free thermoplastic sheathing compound specified for the outer sheath.
• Light duty cables - the smaller cable range identified by the H03Z1Z1-F or H03Z1Z1H2-F codes.
• Ordinary duty cables - the larger cable range identified by the H05Z1Z1-F or H05Z1Z1H2-F codes.
• Low emission of smoke - the fire-performance feature verified by the smoke density test in EN 61034-2.

Who uses SIST EN 50525-3-11:2011?

SIST EN 50525-3-11:2011 is used by cable manufacturers, test laboratories, appliance makers, specifiers and quality managers. Manufacturers use it to design and mark compliant cables, labs use it for type and routine testing, and buyers or engineers use it to choose the right flexible cable for domestic appliances connected to the fixed supply.

What changed in SIST EN 50525-3-11:2011 from the previous edition?

SIST EN 50525-3-11:2011 supersedes HD 21.14 S1:2003.

Which standards are used with SIST EN 50525-3-11:2011?

• EN 50525-1 - gives the general requirements and the shared terms and definitions for this cable family.
• EN 50363-7 - specifies the halogen-free thermoplastic insulation compound used for TI 6.
• EN 50363-8 - specifies the halogen-free thermoplastic sheathing compound used for TM 7.
• EN 50395 - provides the electrical test methods used for conductor resistance, voltage, insulation resistance and related checks.
• EN 50396 - provides the non-electrical measurement methods for thickness and overall dimensions.
• EN 60228 - defines conductor classes, including class 5.
• EN 60332-1-2 - gives the single-cable vertical flame propagation test.
• EN 60811-1-1, EN 60811-1-2, EN 60811-1-4 - provide common material test methods for dimensions, thermal ageing and low-temperature impact.
• EN 61034-2 - gives the smoke density test method used for the low-smoke requirement.

What does the SIST EN 50525-3-11:2011 document contain?

The document contains the cable construction rules in Clause 4, with separate subclauses for light duty and ordinary duty types. Annex A brings the full test schedule, including electrical tests, dimensional checks, material tests, compatibility testing, low-temperature impact, flexing after water immersion, fire tests and halogen assessment. Annex B gives the numerical tables for dimensions and insulation resistance, Annex C gives the ageing-based compatibility test, and Annex D describes the water immersion test procedure for the sheath.

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
...