EN 50399:2022
(Main)Common test methods for cables under fire conditions - Heat release and smoke production measurement on cables during flame spread test - Test apparatus, procedures, results
Common test methods for cables under fire conditions - Heat release and smoke production measurement on cables during flame spread test - Test apparatus, procedures, results
This document specifies the apparatus and methods of test for the assessment of vertical flame spread, heat release, smoke production and occurrence of flaming droplets/particles of vertically mounted electric cables under defined conditions. NOTE For the purpose of this document, the term “electric cable” covers all power, control and communication cables, including optical fibre cables and hybrid cables used for the conveyance of energy and/or signals. This document details the apparatus for the fire propagation testing and the arrangement and calibration of the instrumentation to be installed to measure the heat release and the smoke production during the test. The combustion gases are collected in a hood above the test chamber and conveyed through an exhaust system, which allows the measurement of heat release rate and smoke production. Test procedures to be used for type approval testing for classification of cables in classes [2, 7] B1ca, B2ca, Cca and Dca are given. Cable installation on the test ladder and the volume of air passing through the chamber are in accordance with the Commission Decision 2006/751/EC [6], which is reflected in the requirements of this document.
Allgemeine Prüfverfahren für das Verhalten von Kabeln und isolierten Leitungen im Brandfall - Messung der Wärmefreisetzung und Raucherzeugung während der Prüfung der Flammenausbreitung - Prüfeinrichtung, Prüfverfahren und Prüfergebnis
Méthodes d'essai communes aux câbles soumis au feu - Mesure de la chaleur et de la fumée dégagées par les câbles au cours de l'essai de propagation de la flamme - Appareillage d'essai, procédure et résultats
Le présent document spécifie l’appareillage et les méthodes d’essai pour l’évaluation de la propagation de flamme verticale, du dégagement de chaleur, de l’émission de fumée et de la production de gouttelettes/particules enflammées, avec des câbles électriques montés en position verticale et dans des conditions définies. NOTE Pour les besoins du présent document, le terme "câble électrique" couvre tous les câbles de puissance, de commande et de communication, y compris les câbles à fibres optiques et les câbles hybrides utilisés pour le transport d’énergie et/ou de signaux. Le présent document précise l’appareillage pour les essais de propagation du feu, ainsi que la disposition et l’étalonnage des instruments à installer pour mesurer le dégagement de chaleur et l’émission de fumée au cours de l’essai. Les gaz de combustion sont collectés dans une hotte au-dessus de la chambre d’essai et sont dirigés vers un système d’extraction, ce qui permet de mesurer le débit calorifique et l’émission de fumée. Les procédures d’essai à utiliser pour les essais d’homologation de type pour la classification des câbles dans les Classes [2, 7] B1ca, B2ca, Cca et Dca sont indiquées. L’installation des câbles sur l’échelle d’essai et le volume d’air circulant à travers la chambre sont conformes à la Décision 2006/751/CE de la Commission [6], dont les exigences du présent document sont le reflet.
Skupne preskusne metode za ognjevzdržnost kablov - Meritve oddajanja toplote in nastajanja dima na kablih med preskusom z razpršenim plamenom - Preskusna naprava, postopki, rezultati
Standard EN 50399 določa naprave in preskusne metode za ocenjevanje navpičnega širjenja plamena, oddajanja toplote, nastajanja dima in pojava gorečih kapljic/delcev na navpično napeljanih električnih kablih v določenih razmerah.
OPOMBA: V tem evropskem standardu izraz »električni kabel« zajema vse napajalne, krmilne in komunikacijske kable, vključno z optičnimi kabli in hibridnimi kabli, ki se uporabljajo za prenos energije in/ali signalov.
EN 50399 podrobno opisuje naprave za preskušanje širjenja ognja ter razporeditev in umerjanje instrumentov, ki se namestijo za namene merjenja oddajanja toplote in nastajanja dima med preskusom. Zgorevalni plini se zbirajo v pokrovu nad preskusno komoro in prehajajo skozi izpušni sistem, ki omogoča merjenje stopnje oddajanja toplote in nastajanja dima. Podani so preskusni postopki za homologacijsko preskušanje pri razvrščanju kablov v razrede [2, 6] B1ca, B2ca, Cca in Dca. Namestitev kablov na preskusno lestev in prostornina zraka, ki prehaja skozi komoro, sta v skladu z odločbo Komisije 2006/751/ES [5], kar se odraža v zahtevah tega standarda.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 50399:2011
SIST EN 50399:2011/A1:2016
Skupne preskusne metode za ognjevzdržnost kablov - Meritve oddajanja toplote in
nastajanja dima na kablih med preskusom z razpršenim plamenom - Preskusna
naprava, postopki, rezultati
Common test methods for cables under fire conditions - Heat release and smoke
production measurement on cables during flame spread test - Test apparatus,
procedures, results
Allgemeine Prüfverfahren für das Verhalten von Kabeln und isolierten Leitungen im
Brandfall - Messung der Wärmefreisetzung und Raucherzeugung während der Prüfung
der Flammenausbreitung - Prüfeinrichtung, Prüfverfahren und Prüfergebnis
Méthodes d'essai communes aux câbles soumis au feu - Mesure de la chaleur et de la
fumée dégagées par les câbles au cours de l'essai de propagation de la flamme -
Appareillage d'essai, procédure et résultats
Ta slovenski standard je istoveten z: EN 50399:2022
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 50399
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2022
ICS 13.220.40; 29.060.20 Supersedes EN 50399:2011; EN 50399:2011/A1:2016
English Version
Common test methods for cables under fire conditions - Heat
release and smoke production measurement on cables during
flame spread test - Test apparatus, procedures, results
Méthodes d'essai communes aux câbles soumis au feu - Allgemeine Prüfverfahren für das Verhalten von Kabeln und
Mesure de la chaleur et de la fumée dégagées par les isolierten Leitungen im Brandfall - Messung der
câbles au cours de l'essai de propagation de la flamme - Wärmefreisetzung und Raucherzeugung während der
Appareillage d'essai, procédure et résultats Prüfung der Flammenausbreitung - Prüfeinrichtung,
Prüfverfahren und Prüfergebnis
This European Standard was approved by CENELEC on 2022-08-08. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50399:2022 E
Contents Page
European foreword . 6
Introduction . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
4 Test apparatus . 11
4.1 General. 11
4.2 Test chamber . 11
4.3 Ignition source . 12
4.4 Ladder . 13
4.5 Inlet air supply . 13
4.6 Hood . 14
4.7 Exhaust duct . 14
4.8 Extracting ventilator; effluent cleaning . 15
4.9 Smoke production measuring equipment . 16
4.10 Combustion gas analysis equipment . 16
5 Qualification of test apparatus . 17
5.1 General. 17
5.2 Flow distribution measurements . 17
5.3 Sampling delay time measurement . 17
5.4 Commissioning calibrations . 18
5.5 Routine calibration . 18
5.6 Check of the flame shape . 19
5.7 Performance checks of the test equipment. 19
6 Test procedure . 19
6.1 Initial test conditions . 19
6.2 Test sample . 19
6.3 Sample conditioning . 19
6.4 Determination of the number of test pieces . 20
6.5 Mounting of the test sample . 21
6.6 Exhaust volume flow . 23
6.7 Propane and air flow rates to burner . 23
6.8 Flame application time . 23
6.9 Testing operations . 23
6.10 Observations and measurements during the test . 24
7 Determination of parameters derived from the test . 25
7.1 Calculation of HRR and SPR parameters . 25
7.2 Determination of extent of flame spread (FS). 26
8 Test report . 26
8.1 General. 26
8.2 Contents . 26
Annex A (normative) Calculation of heat release . 46
A.1 Volume flow . 46
A.2 Generated heat effect . 46
A.2.1 Heat release from the ignition source . 46
A.2.2 Heat release from a tested product . 47
A.3 Calculation of the mole fraction of water vapour in the air . 48
Annex B (normative) Smoke production . 49
Annex C (informative) Additional information on Reynolds number in Figure 13 . 50
Annex D (normative) Flow distribution inside the duct . 51
D.1 General . 51
D.2 Velocity profile factor kc . 51
D.2.1 General . 51
D.2.2 Measurement specifications . 51
D.2.3 Actions . 52
D.2.4 Calculation of kc . 52
D.2.5 Measurement report . 53
Annex E (normative) Commissioning calibrations . 54
E.1 General procedures for separate pieces of equipment . 54
E.2 Gas analyser calibrations . 54
E.2.1 General . 54
E.2.2 Oxygen analyser adjustment . 54
E.2.3 Oxygen analyser output noise and drift . 54
E.2.4 Carbon dioxide analyser adjustment . 55
E.3 HRR calibrations . 55
E.3.1 General . 55
E.3.2 HRR calibration by means of the burner . 55
E.3.3 HRR calibration by means of burning a flammable liquid . 57
E.3.4 Commissioning factor k used for HRR calculations . 58
t
E.4 Smoke measurement system calibration . 59
E.4.1 General . 59
E.4.2 Stability check . 59
E.4.3 Optical filter check for white light systems . 59
E.4.4 Smoke calibration by means of burning a flammable liquid . 59
Annex F (informative) Guidance on calibration procedures for specific measuring equipment
..................................................................................................................................................... 62
F.1 General procedures for separate pieces of equipment . 62
F.2 Gas analyser calibrations . 62
F.2.1 Oxygen analyser adjustment . 62
F.2.2 Carbon dioxide analyser adjustment . 62
F.3 Check of propane mass flow controller . 62
F.3.1 General . 62
F.3.2 Actions . 63
F.3.3
...
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