EN 50577:2015
(Main)Electric cables - Fire resistance test for unprotected electric cables (P classification)
Electric cables - Fire resistance test for unprotected electric cables (P classification)
This European Standard specifies a test method to evaluate the maintenance of circuit integrity of electric cables which have intrinsic resistance to fire under fire conditions, in order to classify the electric cable according to EN 13501-3 [2]. The test determines the survival time for circuit integrity of the electric cable when exposed to fire under the conditions of the EN 1363-1 standard time/temperature curve. This European Standard is used in conjunction with EN 1363-1. This European Standard applies to electric power and control cables with rated voltage up to and including 600/1 000 V. The cable is tested in a standardized representative installation condition. The test does not assess the performance of the cable management system. NOTE Optical and data cables could be tested using this method but do not form part of this European Standard as the verification procedures for such cables are still under development. This European Standard includes (Annex A) field of direct application and rules for extended application of test results (EXAP).
Kabel und Leitungen - Feuerwiderstandsprüfung an ungeschützten Kabeln und Leitungen (P-Klassifikation)
Diese Europäische Norm legt ein Prüfverfahren zur Bewertung des Funktionserhalts von elektrischen Kabeln und Leitungen fest, welche unter Brandbeanspruchung Feuerwiderstandsfähigkeit aufweisen, mit dem Ziel, die elektrischen Kabel und Leitungen nach EN 13501-3 zu klassifizieren. Die Prüfung ermittelt die Dauer des Funktionserhalts eines Kabels oder einer Leitung, wenn diese einem Brand unter den Bedingungen der in EN 1363-1 genormten Temperaturzeitkurve ausgesetzt ist. Diese Europäische Norm wird zusammen mit EN 1363-1 angewendet. Diese Europäische Norm gilt für Starkstromkabel und -leitungen und für Steuerleitungen mit Nennspannungen bis einschließlich 600/1 000 V. Das Kabel oder die Leitung wird in einem genormten Standardtragesystem installiert geprüft. Die Prüfung beurteilt nicht das Verhalten des Kabelführungssystems. ANMERKUNG Lichtwellenleiter- und Datenkabel könnten nach diesem Verfahren geprüft werden, jedoch waren die Prüfverfahren für derartige Kabel zum Zeitpunkt der Veröffentlichung zur formellen Abstimmung dieser Norm noch in der Entwicklungsphase (2015-07-24). Diese Europäische Norm beinhaltet den Bereich der direkten Anwendung (Anhang A) und erweiterte Anwendungsregeln (Anhang B) von Prüfergebnissen (en: EXtended APplication, EXAP). Die Auswahl der zu prüfenden Kabel und Leitungen zur Klassifizierung einer Familie wird in Anhang B beschrieben. Erfüllt die Auswahl der Kabel und Leitungen nicht die Anforderungen in Anhang B, gelten die Prüfergebnisse nur für die geprüften Kabel und Leitungen.
Câbles électriques - Essai de résistance au feu des câbles électriques non protégés (Classification P)
Cette Norme européenne spécifie une méthode d’essai permettant d’évaluer le maintien de l’intégrité au feu de circuits de câbles électriques ayant une résistance au feu intrinsèque en cas d’incendie, et finalement classer le câble électrique conformément à l'EN 13501-3. L'essai permet de déterminer le temps de survie de circuits de câbles électriques en cas d'une exposition au feu décrite par la courbe de temps-température de l'EN 1363-1. La présente Norme européenne doit être utilisée conjointement avec l'EN 1363-1. La présente Norme européenne s’applique aux câbles de puissance et de commande électriques de tensions assignées inférieures ou égales à 600 V/1 000 V. Le câble est soumis à essai dans les conditions d'installation représentative normalisée. L’essai n’a pas pour objet d’évaluer les performances des systèmes de câblage. NOTE Il est possible de soumettre à essai les câbles à fibres optiques et de communication en cuivre au moyen de la présente méthode d’essai. Cependant, les procédures de vérification de ces types de câbles étaient encore en cours d’élaboration au moment de la diffusion du présent document pour vote (2015-07-24). La présente Norme européenne inclut le domaine d’application directe (en Annexe A) et les règles d’application étendue des résultats d’essai (EXAP) (en Annexe B). L’Annexe B traite de la sélection des câbles à soumettre à essai pour la classification d’une famille. Lorsque la sélection des câbles ne satisfait pas aux dispositions de l’Annexe B, les résultats d’essai ne s’appliquent qu’aux câbles soumis à essai.
Električni kabli - Preskus požarne odpornosti za nezaščitene električne kable (klasifikacija P)
Ta evropski standard določa preskusno metodo za ocenjevanje vzdrževanja neprekinjenosti tokokroga električnih kablov, ki so sami po sebi odporni proti požarom v požarnih razmerah z namenom razvrščanja električnih kablov v razrede v skladu s standardom EN 13501-3.
Preskus določi čas neprekinjenosti tokokroga električnega kabla, ko je ta izpostavljen požaru pod pogoji standardne krivulje čas/temperatura.
Ta evropski standard se uporablja v povezavi s standardom EN 1363-1.
Ta evropski standard se uporablja za kable z nazivnimi napetostmi do in vključno s 600/1000 V in krmilnimi kabli z nazivno napetostjo.
Med preskusom je kabel izpostavljen standardnim razmeram električnih inštalacij.
Preskus ne ocenjuje delovanja sistema upravljanja kablov.
OPOMBA: Ta metoda se lahko uporabi za preskušanje optičnih in podatkovnih kablov, vendar ti niso zajeti v tem delu evropskega standarda, ker so postopki za preverjanje teh kablov še v izdelavi.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2016
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Electric cables - Fire resistance test for unprotected electric cables (P classification)
Kabel und Leitungen - Feuerwiderstandsprüfung an ungeschützten Kabeln und
Leitungen (P-Klassifikation)
Câbles électriques - Essai de résistance au feu des câbles électriques non protégés
(Classification P)
Ta slovenski standard je istoveten z: EN 50577:2015
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50577
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2015
ICS 13.220.50; 29.060.20
English Version
Electric cables - Fire resistance test for unprotected electric
cables (P classification)
Câbles électriques - Essai de résistance au feu des câbles Kabel und Leitungen - Feuerwiderstandsprüfung an
électriques non protégés (Classification P) ungeschützten Kabeln und Leitungen (P-Klassifikation)
This European Standard was approved by CENELEC on 2015-11-02. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50577:2015 E
Contents
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Test equipment . 7
4.1 Test furnace . 7
4.2 Continuity and voltage withstand checking arrangement . 7
4.3 Fuse . 8
4.4 Standardized representative installation . 8
4.5 Installation of standardized representative installation . 11
5 Test conditions . 16
5.1 Environmental conditions . 16
5.2 Furnace control . 16
6 Test specimen. 16
6.1 Length of test specimen. 16
6.2 Number of test specimens . 17
6.3 Conditioning . 17
6.4 Specimen preparation . 17
6.5 Mounting of test specimens . 17
7 Test procedure . 18
7.1 General . 18
7.2 Measuring temperature . 18
7.3 Applying the voltage . 20
7.4 Starting the test . 21
8 Duration of survival . 21
8.1 Point of failure . 21
9 Test report . 22
Annex A (normative) Field of direct application . 23
A.1 Definitions . 23
A.2 Cable Management System . 23
A.3 Orientation . 23
A.4 Bending radius . 23
Annex B (normative) Extended application of test results . 24
B.1 Definitions . 24
B.2 Product families for EXAP . 24
B.3 EXAP procedure . 25
Bibliography . 27
Figures
Figure 1 — Plan view of “U” bend arrangement incorporating straight or curved
corners in both horizontal and vertical furnaces . 10
Figure 2 — End elevation of “U” bend arrangement in both horizontal and vertical
furnaces . 10
Figure 3 — Plan view of “S” bend arrangement in horizontal furnace only . 11
Figure 4 — End elevation of “S” bend arrangement in horizontal furnace only . 11
Figure 5 — Plan view of “U” bend standardized installation with curved or
straight corners . 12
Figure 6 — End elevation of “U” bend standardized installation . 12
Figure 7 — Plan view of “S” bend standardized representative installation with
curved and straight corners . 13
Figure 8 — End elevation of “S” bend standardized representative installation . 14
Figure 9 — Exit in the furnace wall of the “U” bend installation . 15
Figure 10 — Exit in the furnace wall of the “S” bend installation. 16
Figure 11 — Arrangement of test specimens in “U” bend installation . 17
Figure 12 — Arrangement of a test specimen in “S” bend installation . 18
Figure 13 — Locations of plate thermometers in “U” bend installation . 19
Figure 14 — Locations of plate thermometers in “S” bend installation . 19
Figure 15 — Basic circuit diagram — Electric power and control cables with rated
voltage up to and including 600/1 000V . 21
European foreword
This document (EN 50577:2015) has been prepared by CLC/TC 20 "Electric cables".
The following dates are fixed:
(dop) 2016-11-02
• latest date by which this document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2018-11-02
• latest date by which the national
standards conflicting with this
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the
subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying
any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association.
The cables are tested in a standardized representative installation, under conditions of
minimum bending radius and subject to exposure to fire under conditions of the EN 1363-1
standard time/temperature curve which satisfies the requirements of Mandate M/117 for the P
classification.
NOTE The test method in EN 50200 includes exposure to fire under specified conditions of constant
temperature attack and satisfies the requirements of Mandate M/117 for the PH classification.
Introduction
The purpose of this test is to evaluate the ability of an electric cable to maintain electrical
circuit integrity during a defined time whilst exposed to fire under conditions of the EN 1363-1
standard time/temperature curve and when installed in a standardized representative
condition.
The fire exposure conditions and general arrangement in this European Standard are similar
to those given in prEN 1366-11 [1], developed by CEN/TC 127, and a future document on
Cable management systems (CMS) for fire resistant installations, to be developed by
CLC/TC 213 [2]. Each of these standards has been developed under a Mode 4 co-operation
between CEN/TC 127, CLC/TC 213 and CLC/TC 20.
The test installation has been designed such that vertical and horizontal furnaces can be used
to carry out the test.
The standardized representative condition can be arranged in the following configurations:
a) a “U” or “S” in the horizontal furnace;
b) a “U” and “S” in the horizontal furnace and
c) a “U” in the vertical furnace.
Caution — The attention of all persons concerned with managing and carrying out this
fire resistance test is drawn to the fact that fire testing may be hazardous and that there
is a possibility that toxic and/or harmful smoke and gases may be evolved during the
test. Mechanical, electrical and operational hazards may also arise during the
construction of the test elements or structures, their testing and the disposal of test
residues.
An assessment of all potential hazards and risks to health should be made and safety
precautions should be identified and provided. Written safety instructions should be
issued. Appropriate training should be given to relevant personnel. Laboratory
personnel should ensure that they follow written safety instructions at all times.
1 Scope
This European Standard specifies a test method to evaluate the maintenance of circuit
integrity of electric cables which have intrinsic resistance to fire under fire conditions, in order
to classify the electric cable according to EN 13501-3.
The test determines the survival time for circuit integrity of the electric cable when exposed to
fire under the conditions of the EN 1363-1 standard time/temperature curve.
This European Standard is used in conjunction with EN 1363-1.
This European Standard applies to electric power and control cables with rated voltage up to
and including 600/1 000 V.
The cable is tested in a standardized representative installation condition.
The test does not assess the performance of the cable management system.
NOTE Optical fibre cables and copper communication cables could be tested using this test method,
however verification procedures for such cables were still under development when this document has
been circulated for vote (2015-07-24).
This European Standard includes field of direct application (Annex A) and rules for extended
application of test results (EXAP) (Annex B).
The selection of cables to be tested for classification of a family is given in Annex B. In case
the selection of the cables does not comply with Annex B, the test results are only applicable
to the tested cables.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
EN 1363-1, Fire re
...
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