EN 50525-2-21:2011

Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (Uo/U) - Part 2-21: Cables for general applications - Flexible cables with crosslinked elastomeric insulation

EN 50525-2-21 applies to flexible cables, insulated with crosslinked elastomeric compound, and sheathed with either crosslinked elastomeric compound or thermoplastic polyurethane (TPU). The cables are of rated voltages U0/U up to and including 450/750 V. The cables are intended for a variety of applications where appliances or equipment, including heavy industrial equipment, require a flexible connection to the power supply. The maximum conductor operating temperatures for the cables in this standard are 60 °C (R types), 90 °C (B types) and 110 °C (G types). The following particular cable types are included: - General purpose cables (RR and RN types); - Water-resistant cables (RN8 types); - General purpose cables (BB and BN4 types); - TPU sheathed cables (BQ types); - Heat resistant cables (GG types) NOTE HD 516 contains extensive guidance on the safe use of cables in this standard. This EN 50525-2-21 should be read in conjunction with EN 50525-1, which specifies general requirements.

Kabel und Leitungen - Starkstromleitungen mit Nennspannungen bis 450/750 V (Uo/U) - Teil 2-21: Starkstromleitungen für allgemeine Anwendungen - Flexible Leitungen mit vernetzter Elastomer-Isolierung

Câbles électriques - Câbles d’énergie basse tension de tension assignée au plus égale à 450/750 V (Uo/U) - Partie 2-21: Câbles pour applications générales - Câbles souples isolés en matériau élastomère réticulé

Električni kabli - Nizkonapetostni energetski kabli z naznačeno napetostjo do vključno 450/750 V (Uo/U) - 2-21. del: Kabli za splošno uporabo - Zvijavi kabli z zamreženo elastomerno izolacijo

EN 50525-2-21 velja za zvijave kable, izolirane z zamreženo elastomerno sestavino in s plaščem iz bodisi zamrežene elastomerne sestavine bodisi termoplastičnega poliuretana (TPU). Ti kabli imajo nazivno napetost do in vključno 450/750 V (UO/U). Kabli so namenjeni različnim uporabam, pri katerih aparati ali oprema vključno s težko industrijsko opremo zahtevajo fleksibilno povezavo z napajanjem. Maksimalne delovne temperature pretvornika za kable iz tega standarda so 60 °C (tipi R), 90 °C (tipi B) in 110 °C (tipi G). Vključeni so naslednji tipi kablov: – kabli za splošne namene (tipov RR in RN); – vodoodporni kabli (tipov RN8); – kabli za splošne namene (tipov BB in BN4); – kabli s plaščem iz TPU (tipov BQ); – toplotno odporni kabli (tipov GG).

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 50525-2-21:2011 - Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (Uo/U) - Part 2-21: Cables for general applications - Flexible cables with crosslinked elastomeric insulation

Relations

• Replaces: HD 22.10 S2:2007 - Cables of rated voltages up to and including 450/750 V and having cross-linked insulation - Part 10: EPR insulated and polyurethane sheathed flexible cables
• Effective Date: 28-Jan-2023
• Replaces: HD 22.11 S2:2007 - Cables of rated voltages up to and including 450/750 V and having cross-linked insulation - Part 11: EVA cords and flexible cables
• Effective Date: 28-Jan-2023
• Replaces: HD 22.16 S2:2007 - Cables of rated voltages up to and including 450/750 V and having cross-linked insulation - Part 16: Water resistant polychloroprene or equivalent synthetic elastomer sheathed cables
• Effective Date: 28-Jan-2023
• Replaces: HD 22.12 S2:2007 - Cables of rated voltages up to and including 450/750 V and having cross-linked insulation - Part 12: Heat resistant EPR cords and flexible cables
• Effective Date: 28-Jan-2023
• Replaces: HD 22.4 S4:2004 - Cables of rated voltages up to and including 450/750 V and having cross-linked insulation - Part 4: Cords and flexible cables
• Effective Date: 28-Jan-2023
• Corrected By: EN 50525-2-21:2011/AC:2013 - Electric cables - Low voltage energy cables of rated voltages up to and including 450/750 V (Uo/U) - Part 2-21: Cables for general applications - Flexible cables with crosslinked elastomeric insulation
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2011
(OHNWULþQLNDEOL1L]NRQDSHWRVWQLHQHUJHWVNLNDEOL]QD]QDþHQRQDSHWRVWMRGR
YNOMXþQR98R8GHO.DEOL]DVSORãQRXSRUDER=YLMDYLNDEOL]
]DPUHåHQRHODVWRPHUQRL]RODFLMR
Electric cables - Low voltage energy cables of rated voltages up to and including 450/750
V (Uo/U) - Part 2-21: Cables for general applications - Flexible cables with crosslinked
elastomeric insulation
Kabel und Leitungen - Starkstromleitungen mit Nennspannungen bis 450/750 V (Uo/U) -
Teil 2-21: Starkstromleitungen für allgemeine Anwendungen - Flexible Leitungen mit
vernetzter Elastomer- Isolierung
Câbles électriques - Câbles d’énergie basse tension de tension assignée au plus égale à
450/750 V (Uo/U) - Partie 2-21: Câbles pour applications générales - Câbles souples
isolés en matériau élastomère réticulé
Ta slovenski standard je istoveten z: EN 50525-2-21:2011
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50525-2-21
NORME EUROPÉENNE
May 2011
EUROPÄISCHE NORM
ICS 29.060.20 Supersedes HD 22.4 S4:2004, HD 22.10 S2:2007, HD 22.11 S2:2007, HD 22.12 S2:2007, HD
22.16 S2:2007
English version
Electric cables -
Low voltage energy cables of rated voltages up to and including 450/750 V
(U /U) -
Part 2-21: Cables for general applications -
Flexible cables with crosslinked elastomeric 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 2-21: Starkstromleitungen für
Partie 2-21: Câbles pour applications allgemeine Anwendungen -
générales - Flexible Leitungen mit vernetzter
Câbles souples isolés en matériau Elastomer-Isolierung
élastomère réticulé
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 50525-2-21:2011 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 accepted by CENELEC as
EN 50525-2-21 on 2011-01-17.
This document, which is one of a multipart series, supersedes HD 22.4 S4:2004,
HD 22 10 S2:2007, HD 22.11 S2:2007, HD 22.12 S2:2007, HD 22.16 S2:2007.

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 50525-2-21:2011
Contents
Page
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General purpose cables . 6
4.1 Ordinary duty cables – H05RR-F . 6
4.2 Ordinary duty cables – H05RN-F . 7
4.3 Heavy duty cables – H07RN-F . 8
4.4 Heavy duty multicore cables – H07RN-F . 9
5 Water resistant cables . 10
5.1 Heavy duty cables – H07RN8-F . 10
5.2 Heavy duty multicore cables – H07RN8-F . 12
6 Heat resistant cables (90 °C) . 13
6.1 Ordinary duty cables – H05BB-F . 13
6.2 Heavy duty cables – H07BB-F . 14
6.3 Ordinary duty cables – H05BN4-F . 16
6.4 Heavy duty cables – H07BN4-F. 16
6.5 Heavy duty multicore cables – H07BN4-F . 18
7 Heat resistant cables – TPU sheathed (90 °C) . 19
7.1 Ordinary duty cables – H05BQ-F . 19
7.2 Heavy duty cables – H07BQ-F . 20
8 Heat resistant EVA cables (110 °C) - Ordinary duty cables – H05GG-F and
H05GGH2-F . 21
8.1 Construction . 21
8.2 Requirements . 22
Annex A (normative) Tests for cables to EN 50525-2-21 . 23
Annex B (normative) General data . 27
Annex C (normative) Requirements for compatibility test . 33
C.1 Cables with a 60 °C temperature rating . 33
C.2 Cables with a 90 °C temperature rating . 33
C.3 Cables with a 110 °C temperature rating . 34
Annex D (normative) Water resistance test for H07RN8-F flexible cables – Electrical
test . 35
D.1 Voltage pre-test on completed cables . 35
D.2 Voltage test on completed cable at 50 °C . 35
D.3 Insulation resistance test after pre-voltage test . 35
Annex E (normative) Water resistance test for H07RN8-F flexible cables – Mechanical
properties of sheath after water immersion . 37
E.1 G e ner a l . 37
E.2 Procedure . 37
E.3 Requirements . 37
Annex F (normative) Special national conditions . 39
Bibliography . 40

Tables
Table A.1 − 60 °C cables . 23
Table A.1 − 60 °C cables (concluded) . 24
Table A.2 − 90 °C and 110 °C cables . 25
Table B.1 . 27
Table B.2 . 28
Table B.3 . 31
Table B.4 . 32
Table C.1 . 33
Table C.2 . 33
Table C.3 . 34
Table E.1 − Requirements for tensile strength and elongation at break . 38

- 5 - EN 50525-2-21:2011
1 Scope
EN 50525-2-21 applies to flexible cables, insulated with crosslinked elastomeric compound,
and sheathed with either crosslinked elastomeric compound or thermoplastic polyurethane
(TPU).
The cables are of rated voltages U /U up to and including 450/750 V.
The cables are intended for a variety of applications where appliances or equipment,
including heavy industrial equipment, require a flexible connection to the power supply.
The maximum conductor operating temperatures for the cables in this standard are 60 °C (R
types), 90 °C (B types) and 110 °C (G types).
The following particular cable types are included:
- General purpose cables (RR and RN types);
- Water-resistant cables (RN8 types);
- General purpose cables (BB and BN4 types);
- TPU sheathed cables (BQ types);
- Heat resistant cables (GG types)
NOTE HD 516 contains extensive guidance on the safe use of cables in this standard.
This EN 50525-2-21 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 50363-1 Insulating, sheathing and covering materials for low voltage
energy cables - Part 1: Cross-linked elastomeric insulating
compounds
EN 50363-2-1 Insulating, sheathing and covering materials for low voltage
energy cables - Part 2-1: Cross-linked elastomeric sheathing
compounds
EN 50363-10-2 Insulating, sheathing and covering materials for low voltage
energy cables - Part 10-2: Miscellaneous sheathing compounds -
Thermoplastic polyurethane
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)

Tests on electric and optical fibre cables under fire conditions -
EN 60332-1-2
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)
Insulating and sheathing materials of electric and optical cables -
EN 60811-1-1
Common test methods - Part 1-1: General application -
Measurement of thickness and overall dimensions - Tests for
determining the mechanical properties (IEC 60811-1-1)
Insulating and sheathing materials of electric and optical cables -
EN 60811-1-2
Common test methods - Part 1-2: General application - Thermal
ageing methods (IEC 60811-1-2)
Insulating and sheathing materials of electric and optical cables -
EN 60811-1-4
Common test methods - Part 1-4: General application - Tests at
low temperature (IEC 60811-1-4)
3 Terms and definitions
For the purposes of this document, th
...