EN 50525-2-31:2011

Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-31: Cables for general applications - Single core non-sheathed cables with thermoplastic PVC insulation

EN 50525-2-31 applies to non-sheathed single core cables insulated with thermoplastic (PVC) insulation. The cables are of rated voltages U0/U up to and including 450/750 V. The cables are intended for fixed wiring applications. NOTE 1 Cables rated 450/750 V may be used at 600/1 000 V when this cable is used in fixed installations with mechanical protection, within switchgear and control gear - see HD 516. The maximum conductor operating temperatures for the cables in this standard are 70 °C (V types) and 90 °C (V2 types). NOTE 2 HD 516 contains extensive guidance on the safe use of cables in this standard. This EN 50525-2-31 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 2-31: Starkstromleitungen für allgemeine Anwendungen - Ader- und Verdrahtungsleitungen mit thermoplastischer PVC-Isolierung

Câbles électriques - Câbles d’énergie basse tension de tension assignée au plus égale à 450/750 V (U0/U) - Partie 2-31: Câbles pour applications générales - Conducteurs isolés en PVC thermoplastique

Električni kabli - Nizkonapetostni energetski kabli z nazivno napetostjo do vključno 450/750 V (U0/U) - 2-31. del: Kabli za splošno uporabo - Enožilni neoplaščeni kabli s termoplastično PVC izolacijo

EN 50525-2-31 velja za neopleščene enožilne kable, izolirane s termoplastično (PVC) izolacijo. Ti kabli imajo nazivno napetost do in vključno 450/750 V (UO/U). Kabli so namenjeni uporabam pri fiksnem ožičenju.

General Information

• Status: Published
• Publication Date: 05-May-2011
• Withdrawal Date: 16-Jan-2014
• ICS: 29.060.20 - Cables
• Technical Committee: CLC/TC 20 - Electric cables
• Drafting Committee: CLC/TC 20 - Electric cables
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 25-Sep-2019
• 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: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Ref Project: SIST EN 50525-2-31:2011 - Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) - Part 2-31: Cables for general applications - Single core non-sheathed cables with thermoplastic PVC insulation

Relations

• Replaces: HD 21.3 S3:1995/A1:1999 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 3: Non-sheathed cables for fixed wiring
• Effective Date: 28-Jan-2023
• Replaces: HD 21.7 S2:1996/A1:1999 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Single core non-sheathed cables for internal wiring for a conductor temperature of 90° C
• Effective Date: 28-Jan-2023
• Replaces: HD 21.3 S3:1995 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 3: Non-sheathed cables for fixed wiring
• Effective Date: 28-Jan-2023
• Replaces: HD 21.7 S2:1996 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Single core non-sheathed cables for internal wiring for a conductor temperature of 90° C
• Effective Date: 28-Jan-2023
• Replaces: HD 21.3 S3:1995/A2:2008 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 3: Non-sheathed cables for fixed wiring
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2011
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YNOMXþQR988GHO.DEOL]DVSORãQRXSRUDER(QRåLOQL
QHRSODãþHQLNDEOLVWHUPRSODVWLþQR39&L]RODFLMR
Electric cables - Low voltage energy cables of rated voltages up to and including 450/750
V (U0/U) - Part 2-31: Cables for general applications - Single core non-sheathed cables
with thermoplastic PVC insulation
Kabel und Leitungen - Starkstromleitungen mit Nennspannungen bis 450/750 V (U0/U) -
Teil 2-31: Starkstromleitungen für allgemeine Anwendungen - Ader- und
Verdrahtungsleitungen mit thermoplastischer PVC-Isolierung
Câbles électriques - Câbles d’énergie basse tension de tension assignée au plus égale à
450/750 V (U0/U) - Partie 2-31: Câbles pour applications générales - Conducteurs isolés
en PVC thermoplastique
Ta slovenski standard je istoveten z: EN 50525-2-31:2011
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50525-2-31
NORME EUROPÉENNE
May 2011
EUROPÄISCHE NORM
ICS 29.060.20 Supersedes HD 21.3 S3:1995 + A1:1999 + A2:2008, HD 21.7 S2:1996 + A1:1999

English version
Electric cables -
Low voltage energy cables of rated voltages up to and including 450/750 V
(U /U) -
Part 2-31: Cables for general applications -
Single core non-sheathed cables with thermoplastic PVC insulation

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 2-31: Starkstromleitungen für
Partie 2-31: Câbles pour applications allgemeine Anwendungen -
générales - Ader- und Verdrahtungsleitungen mit
Conducteurs isolés en PVC thermoplastischer PVC-Isolierung
thermoplastique
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 50525-2-31:2011 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 50525-2-31 on 2011-01-17.
This document, which is one of a multipart series, supersedes HD 21.3 S3:1995 + A1:1999 +
A2:2008 and HD 21.7 S2:1996 + A1:1999.
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 50525-2-31:2011
Contents
Page
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 General purpose cable . 5
4.1 Cables for fixed wiring – H07V-U and H07V-R . 5
4.2 Cables for fixed wiring – H07V-K . 5
4.3 Cables for internal wiring – H05V-U and H05V-R . 6
4.4 Cables for internal wiring – H05V-K . 6
5 Heat resistant cables (90 °C) . 7
5.1 Cables for fixed wiring – H07V2-U and H07V2-R . 7
5.2 Cables for fixed wiring – H07V2-K . 8
5.3 Cables for internal wiring – H05V2-U and H05V2-R . 8
5.4 Cables for internal wiring – H05V2-K. 9
Annex A (normative) . 10
Tests for cables to EN 50525-2-31 . 10
Annex B (normative) . 11
General data . 11
Bibliography . 14

Tables
Table A.1 . 10
Table B.1 ― Cables with rigid conductor (450/750 V) . 11
Table B.2 ― Cables with flexible conductor (450/750 V) . 12
Table B.3 ― Cables with rigid conductor (300/500 V) . 12
Table B.4 ― Cables with flexible conductors (300/500 V) . 13

1 Scope
EN 50525-2-31 applies to non-sheathed single core cables insulated with thermoplastic
(PVC) insulation.
The cables are of rated voltages U /U up to and including 450/750 V.
The cables are intended for fixed wiring applications.

NOTE 1  Cables rated 450/750 V may be used at 600/1 000 V when this cable is used in fixed installations with
mechanical protection, within switchgear and control gear - see HD 516.
The maximum conductor operating temperatures for the cables in this standard are 70 °C
(V types) and 90 °C (V2 types).

NOTE 2  HD 516 contains extensive guidance on the safe use of cables in this standard.

This EN 50525-2-31 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 50363-3 Insulating, sheathing and covering materials for low voltage
energy cables - Part 3: PVC insulating 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 60811-1-4 Insulating and sheathing materials of electric and optical cables -
Common test methods - Part 1-4: General application - Tests at
low temperature
(IEC 60811-1-4:1985 + A1:1993 + corr. May 1986)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in Clause 3 of
EN 50525-1 apply.
- 5 - EN 50525-2-31:2011
4 General purpose cable
4.1 Cables for fixed wiring – H07V-U and H07V-R
4.1.1 Construction
4.1.1.1 Conductor
The conductor shall be class 1 or class 2, according to EN 60228.
4.1.1.2 Sizes of cable
The sizes of cable shall be:
2 2
− class 1 – 1,5 mm to 10 mm ;
2 2
− class 2 – 1,5 mm to 1 000 mm .
4.1.1.3 Insulation
The insulation shall be polyvinyl chloride compound of Type TI 1 to EN 50363-3 applied
around the conductor.
4.1.1.4 Marking
The cable shall be marked with the CENELEC code H07V-U for cables with class 1
conductor, or H07V-R for cables with class 2 conductor. The marking shall comply with
Clause 6 of EN 50525-1.
4.1.2 Requirements
Each cable shall comply with the appropriate requirements given in EN 50525-1, and the
particular requirements of this Part.
Testing shall be in accordance with Annex A, and the relevant tests indicated in column 6.
The dimensions of the cables shall conform to Table B.1 for the relevant size.
4.2 Cables for fixed wiring – H07V-K
4.2.1 Construction
4.2.1.1 Conductor
The conductor shall be class 5 according to EN 60228.
4.2.1.2 Sizes of cable
2 2
The sizes of cable shall be 1,5 mm to 240 mm .
4.2.1.3 Insulation
The insulation shall be polyvinyl chloride compound of Type TI 1 to EN 50363-3 applied
around the conductor.
4.2.1.4 Marking
The cable shall be marked with the CENELEC code H07V-K. The marking shall comply with
Clause 6 of EN 50525-1.
4.2.2 Requirements
Each cable shall comply with the appropriate requirements given in EN 50525-1, and the
particular requirements of this Part.
Testing shall be in accordance with Annex A, and the relevant tests indicated in column 7.
The dimensions of the cables shall conform to Table B.2 for the relevant size.
4.3 Cables for internal wiring – H05V-U and H05V-R
4.3.1 Construction
4.3.1.1 Conductor
The conductor shall be class 1 or class 2, according to EN 60228.
4.3.1.2 Sizes of cable
The sizes of cable shall be:
2 2
− class 1 – 0,5 mm to 1 mm ;
2 2
− class 2 – 0,5 mm to 1 mm .
4.3.1.3 Insulation
The insulation shall be polyvinyl chloride compound of Type TI 1 to EN 50363-3 applied
around the conductor.
4.3.1.4 Marking
The cable shall be marked with the CENELEC code H05V-U for cables with class 1
conductor, or H05V-R for cables with class 2 conductor. The marking shall comply with
Clause 6 of EN 50525-1.
4.3.2 Requirements
Each cable shall comply with the appropriate requirements given in EN 50525-1, and the
particular requirements of this Part.
Testing shall be in accordance with Annex A, and the relevant tests indicated in column 8.
The dimensions of the cables shall conform to Table B.3 for the relevant size.
4.4 Cables for internal wiring – H05V-K
4.4.1 Construction
4.4.1.1 Conductor
The conductor shall be class 5 according to EN 60228.

- 7 - EN 50525-2-31:2011
4.4.1.2 Sizes of cable
2 2
The sizes of cable shall be 0,5 mm to 1 mm .
4.4.1.3 Insulation
The insulation shall be polyvinyl chloride compound of Type TI 1 to EN 50363-3 applied
around the conductor.
4.4.1.4 Marking
The cable shall be marked with the CENELEC code H05V-K. The marking shall comply with
Clause 6 of EN 50525-1.
4.4.2 Requirements
Each cable shall comply with the appropriate requirements given in EN 50525-1, and the
particular requirements of this Part.
Testing shall be in accordance with Annex A, and the relevant tests indicated in column 9.
The dimensions of the cables shall conform to Table B.4 for the relevant size.
5 Heat resistant cables (90 °C)
5.1 Cables for fixed wiring – H07V2-U and H07V2-R
5.1.1 Construction
5.1.1.1 Conductor
The conductor shall be class 1 or class 2, according to EN 60228.
5.1.1.2 Sizes of cable
The sizes of cable shall be:
2 2
− class 1 – 1,5 mm to 10 mm ;
2 2
− class 2 – 1,5 mm to 35 mm .
5.1.1.3 Insulation
The insulation shall be polyvinyl chloride compound of Type TI 3 to EN 50363-3 applied
around the conductor.
5.1.1.4 Marking
The cable shall be marked with the CENELEC code H07V2-U for cables with class 1
conductor, or H07V2-R for cables with class 2 conductor. The marking shall comply with
Clause 6 of EN 50525-1.
5.1.2 Requirements
Each cable shall comply with the appropriate requirements given in EN 50525-1, and the
particular requirements of this Part.
Testing shall be in accordance with Annex A, and the relevant tests indicated in column 10.

The dimensions of the cables shall conform to Table B.1 for the relevant size.
5.2 Cables for fixed wiring – H07V2-K
5.2.1
...