SIST EN 50525-2-31:2011

SLOVENSKI STANDARD
01-julij-2011
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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.
SIST EN 50525-2-31:
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