SIST EN 50200:2016

SLOVENSKI STANDARD
SIST EN 50200:2016
01-marec-2016
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SIST EN 50200:2006
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Method of test for resistance to fire of unprotected small cables for use in emergency
circuits
Prüfung des Isolationserhaltes im Brandfall von Kabeln mit kleinen Durchmessern für die
Verwendung in Notstromkreisen bei ungeschützter Verlegung
Méthode d'essai de résistance au feu des câbles de petites dimensions sans protection
pour utilisation dans les circuits de secours
Ta slovenski standard je istoveten z: EN 50200:2015
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
SIST EN 50200:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50200:2016

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SIST EN 50200:2016


EUROPEAN STANDARD EN 50200

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2015
ICS 13.220.40; 29.035.20 Supersedes EN 50200:2006
English Version
Method of test for resistance to fire of unprotected small cables
for use in emergency circuits
Méthode d'essai de la résistance au feu des câbles de Prüfung des Isolationserhaltes im Brandfall von Kabeln mit
petites dimensions sans protection pour utilisation dans les kleinen Durchmessern für die Verwendung in
circuits de secours Notstromkreisen bei ungeschützter Verlegung
This European Standard was approved by CENELEC on 2015-09-14. 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 50200:2015 E

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SIST EN 50200:2016
EN 50200:2015
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Test environment . 6
5 Test apparatus . 6
5.1 Test equipment . 6
5.2 Test wall and mounting . 7
5.3 Continuity checking arrangement for electric power and control cables with rated
voltage up to and including 600 V/1 000 V . 7
5.4 Source of heat . 8
5.5 Shock producing device . 8
5.6 Positioning of source of heat . 8
5.7 Fuses. 9
6 Verification procedure for source of heat . 9
6.1 Measuring equipment . 9
6.2 Procedure . 9
6.3 Evaluation . 9
6.4 Further verification . 10
6.5 Verification report . 10
7 Test sample (Electric power and control cables with rated voltage up to and including
600 V/1 000 V) . 10
7.1 Sample preparation . 10
7.2 Sample mounting . 10
8 Cable test procedure (Electric power and control cables with rated voltage up to and
including 600 V/1 000 V) . 10
8.1 General . 10
8.2 Electrical connections . 10
8.3 Flame and shock application . 11
8.4 Electrification . 11
8.5 Duration of survival . 12
8.6 Point of failure . 12
9 Test report (Electric power and control cables with rated voltage up to and including
600 V/1 000 V) . 12
Annex A (informative) Guidance on the choice of recommended test equipment . 22
A.1 Burner and Venturi . 22
A.2 Test wall material . 22
A.3 Rubber bushing . 22
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Annex B (normative) Field of direct application and extended application of test results
(Electric power and control cables with rated voltage up to and including 600 V/1 000 V) . 23
B.1 Definitions. 23
B.2 Field of direct application . 23
B.3 Extended Application of test results (EXAP) . 24
Annex C (normative) Fuse characteristic curve . 26
Annex D (informative) Information regarding classification . 27
D.1 General . 27
D.2 Functional requirement (PH) and Interpretation . 27
D.3 Classification . 27
Annex E (informative) Guidance for using optional water spray protocol . 28
E.1 General . 28
E.2 Modifications for optional water spray protocol . 28
Bibliography . 31

Figures
Figure 1 — Schematic of test configuration . 13
Figure 2 — Plan view of test equipment . 14
Figure 3 — End elevation of test equipment (not to scale) . 15
Figure 4 — Typical rubber bush (hardness: 50-60 shore A) for fastening the wall to the rigid
supports . 16
Figure 5 — Burner face . 17
Figure 6 — Schematic diagram of an example of a burner control system . 18
Figure 7 — Temperature measuring arrangement . 19
Figure 8 — Example of method of mounting a sample for test . 20
Figure 9 — Basic circuit diagram — Electric power and control cables with rated voltage up
to and including 600 V/1 000 V . 21
Figure C.1 — Fuse characteristic curve . 26
Figure E.1 — Water spray tube . 29
Figure E.2 — Water spray application . 29

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SIST EN 50200:2016
EN 50200:2015
European foreword
This document (EN 50200:2015) has been prepared by Working Group 10 of CLC/TC 20 “Electric cables”.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2016-09-14
national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2018-09-14
document have to be withdrawn
This document supersedes EN 50200:2006.
The main changes compared to EN 50200:2006 are as follows (minor changes are not listed):
– detailed procedures for metallic data cables and for optical fibre cables have been removed as they are
now given in the relevant standards of CLC/TC 46X and CLC/TC 86A. These standards refer to
EN 50200 for the basic test method;
– recasting and extension of the existing Annex D into two new Annexes, Annex B “Field of direct
application and extended application of test results (Electric power and control cables with rated voltage
up to and including 600 V/1 000 V) and Annex D “Information regarding classification”.
The cable is tested in a representative installed condition, under conditions of minimum bending radius, and
the test is based upon a constant temperature attack at a minimum test temperature of 830 °C. This is typical
of the gas temperature reached after 30 min exposure to the time/temperature conditions prescribed in
EN 1363-1.
The test method in this document includes exposure to fire with mechanical shock under specified conditions
and satisfies the requirements of Mandate M/117 for the PH classification. This European Standard also
includes (Annex E) a means of applying a water spray to the cable during the test, which is not required
under Mandate M/117.
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.
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1 Scope
This European Standard specifies the test method for cables designed to have intrinsic resistance to fire and
intended for use as emergency circuits for alarm, lighting and communication purposes.
This European Standard is applicable to cables for emergency circuits of rated voltage not exceeding
600 V/1 000 V, including those of rated voltage below 80 V and optical fibre cables.
This European Standard includes details for the specific point of failure, continuity checking arrangement,
test sample, test procedure and test report relevant to electric power and control cables with rated voltage up
to and including 600 V/1 000 V. Details for the specific point of failure, continuity checking arrangement, test
sample, test procedure and test report relevant to copper data and telecom cables and optical cables are
given in the relevant standards of CLC/TC 46X and CLC/TC 86A.
The test method is limited to cables with an overall diameter not exceeding 20 mm.
The test method is based on the direct impingement of flame from a propane burner giving a constant
temperature attack of a notional 842 °C. It is intended to be used for cables for emergency circuits suitable
for alarm, emergency lighting and communication.
NOTE When the test method is used in support of EN 13501–3, it only applies to cables of less than 20 mm
2
diameter, and, for metallic conductor cables, to those with conductor sizes up to and including 2,5 mm . For optical
cables, only the less than 20 mm diameter limit applies.
This European Standard includes (Annex B) the field of direct application and rules for extended application
1)
of test results (EXAP). Details regarding classification using data from this test are given in EN 13501-3 .
Information regarding classification is given in Annex D.
This European Standard also includes informative guidance (Annex E) on a means of applying a water spray
to the cable during the test. Such a requirement may be a feature of particular product standards.
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 13501-3, Fire classification of construction products and building elements - Part 3: Classification using
data from fire resistance tests on products and elements used in building service installations: fire resisting
ducts and fire dampers
EN 60584-1, Thermocouples - Part 1: EMF specifications and tolerances (IEC 60584-1)
EN 60695-4, Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products
(IEC 60695-4)
EN ISO 13943, Fire safety - Vocabulary (ISO 13943)

1) At the time of finalizing EN 50200, an amendment to EN 13501-3:2005+A1:2009 concerning cables is under consideration in
CEN/TC 127.
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IEC 60269-3:2010 and IEC 60269–3:2010/A1:2013, Low-voltage fuses – Part 3: Supplementary
requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) -
Examples of standardized systems of fuses A to F
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 13943 and EN 60695-4 and
the following apply.
3.1
draught-free environment
space in which the results of tests are not significantly affected by the local air speed
4 Test environment
The test shall be carried out in a draught-free environment within a suitable chamber, of minimum volume
3
20 m , with facilities for disposing of any noxious gases resulting from the burning. Sufficient ventilation shall
be available to sustain the flame for the duration of the test. Air inlets and the exhaust chimney should be
located in such a way that the burner flame remains stable during the verification procedure and test.
If necessary, the burner shall be shielded from any draughts by the use of draught shields. Windows may be
installed in the walls of the chamber in order to observe the behaviour of the cable during the test. Fume
exhaust should be achieved by means of natural draught through a chimney located at least 1 m from the
burner. A damper may be used for adjustment of ventilation conditions.
The same ventilation and shielding conditions shall be used in the chamber during both the verification and
cable test procedures.
The chamber and test apparatus shall be at (25 ± 15) °C at the start of each test.
NOTE The test given in this European Standard may involve the use of dangerous voltages and temperatures.
Suitable precautions should be taken against shock, burning, fire and explosion risks that may be involved and against
any noxious fumes that may be produced.
5 Test apparatus
5.1 Test equipment
The test equipment shall consist of the following:
a) a test wall, on to which the cable is mounted, comprising a board manufactured from heat resisting non-
combustible material suitable for the temperatures involved fastened to steel supports and mounted on
a rigid support as described in 5.2;
b) a continuity checking arrangement as described in 5.3;
c) a source of heat comprising a horizontally mounted ribbon burner as described in 5.4;
d) a shock producing device as described in 5.5;
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e) a test wall equipped with thermocouples for verification of the source of heat as described in 6.1;
f) fuses as described in 5.7.
A general arrangement of the test equipment is shown in Figure 1, Figure 2 and Figure 3.
5.2 Test wall and mounting
The test wall shall consist of a board of heat resisting, non-combustible and non-metallic material fastened
rigidly to two horizontal steel supports, one at the top of the board and the other at the bottom. Vertical
supports may also be used. The board shall be (900 ± 100) mm long, (300 ± 50) mm high and (10 ± 2) mm
thick, and the total mass of the wall (i.e. board and steel supports) shall be (10 ± 0,5) kg. Ballast, if required,
shall be placed inside the steel supports.
Guidance on the choice of suitable material for the wall is given in Annex A.
Boards should not be re-used if they show significant damage. In case of dispute, a new board shall be used
for each test.
NOTE 1 Supports made from square section steel tube approximately 25 mm x 25 mm and approximately 1 m long
have been found to be suitable.
NOTE 2 The top support should be fastened to the board so that its upper face is slightly above the upper edge of the
board, so that the shock producing device impacts on the support and not the board.
Each horizontal support shall have a mounting hole at each end, not more than 100 mm from the edge of the
board, the exact position and diameter being determined by the particular supporting bush and supporting
framework used. The test wall shall be fastened to a rigid support by four bonded rubber bushes of hardness
50-60 Shore A fitted between the horizontal steel supports of the wall and the support framework, as shown
in Figure 1 and Figure 2, so as to allow movement under impact.
NOTE 3 A typical rubber bush which has been found to be suitable is shown in Figure 4.
In order to check the mounting of the wall, the static deflection following application of a load to the centre of
the upper support of the wall shall periodically be measured.
The values of load and deflection shall comply with the following:
– load: (25 ± 0,2) kg;
– deflection: (1,5 ± 0,3) mm.
5.3 Continuity checking arrangement for electric power and control cables with rated
voltage up to and including 600 V/1 000 V
During the test a current for continuity checking shall be passed through all conductors of the test sample.
This shall be provided by a three phase star connected or single phase transformer(s) of sufficient capacity
to maintain the test voltage up to the maximum leakage current allowable.
NOTE 1 Due note should be taken of the fuse characteristics when determining the power rating of the transformer.
This current is achieved by connecting, at the other end of the sample, a suitable load and indicating device
(e.g. lamp) to each conductor, or group of conductors.
NOTE 2 A current of 0,25 A at the test voltage, through each conductor or group of conductors, has been found to be
suitable.
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5.4 Source of heat
5.4.1 Burner
The source of heat shall be a ribbon type propane gas burner with a nominal burner face length of 500 mm
with a Venturi mixer. The nominal burner face width shall be 10 mm. The face of the burner shall have three
staggered rows of drilled holes, nominally 1,32 mm in diameter and drilled at centres 3,2 mm from one
another, as shown in Figure 5.
Guidance on the choice of recommended burner systems is given in Annex A.
NOTE 1 A centre-feed burner is recommended.
NOTE 2 A row of small holes milled on each side of the burner plate, to serve as pilot holes for keeping the flame
burning, is permitted.
5.4.2 Flow meters and flow rates
Mass flow meters / controllers shall be used as the means of controlling accurately the input flow rates of fuel
and air to the burner.
For the purposes of this test, the air shall have a dew point not higher than 0 °C.
The mass flow rates used for the test shall be as follows:
– propane: (160 ± 6) mg/s;
NOTE 1 This is approximately equivalent to a volume flow rate of (5,0 ± 0,2) l/min at reference conditions (1 bar and 20 °C).
– air: (1 600 ± 80) mg/s.
NOTE 2 This is approximately equivalent to a volume flow rate of (80 ± 4) l/min at reference conditions (1 bar and 20 °C).
5.4.3 Verification
The burner and control system shall be subject to verification following the procedure given in Clause 6.
5.5 Shock producing device
The shock producing device shall be a mild steel round bar (25 ± 0,1) mm in diameter and (600 ± 5) mm
long. The bar shall be freely pivoted about an axis parallel to the test wall, which shall be in the same
horizontal plane as, and (200 ± 5) mm away from, the upper edge of the wall. The axis shall divide the bar
into two unequal lengths, the longer length being (400 ± 5) mm which shall impact the wall. The bar shall
+5
drop under its own weight from an angle of ( 60 )° to the horizontal to strike the upper steel support of the
0
wall at its midpoint as shown in Figure 1 and Figure 3.
5.6 Positioning of source of heat
The burner face shall be positioned in the test chamber such that it is at least 200 mm above the floor of the
chamber or any solid mounting block, and at least 500 mm from any chamber wall.
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By reference to the wall the burner shall be positioned centrally at a horizontal distance of (40 ± 2) mm from
the burner face to the test wall as shown in Figure 2 and Figure 3.
NOTE The burner should be rigidly fixed to the framework during testing so as to prevent movement relative to the
test sample.
5.7 Fuses
Fuses used in the test procedures in Clause 8 shall comply with IEC 60269-3 Fuse System A-D Type DII, 2A.
Alternatively, a circuit breaker with equivalent characteristics may be used.
Where a circuit breaker is used, its equivalent characteristics shall be demonstrated by reference to the
characteristic curve shown in Annex C.
The fuse shall be the reference method in the case of dispute.
6 Verification procedure for source of heat
6.1 Measuring equipment
The flame temperature shall be measured using two 1,5 mm mineral insulated, stainless steel sheathed
thermocouples Type K to EN 60584-1, mounted on the test wall as shown in Figure 7. The thermocouple tips
shall be (10 ± 0,5) mm in front of the test wall. The horizontal line of the thermocouples shall be
(100 ± 10) mm above the bottom of the wall. The wall shall consist of a board of heat-resistant, non-
combustible and non-metallic material (900 ± 100) mm long, (300 ± 50) mm high and (10 ± 2) mm thick.
6.2 Procedure
Position the burner (40 ± 2) mm horizontally from the wall and (65 ± 10) mm vertically below the centre line
of the thermocouple as shown in Figure 3.
Ignite the burner and adjust the gas and air supplies to those given in 5.4.2.
Monitor the temperature as recorded by the thermocouples over a period of 10 min to ensure conditions are
stable.
6.3 Evaluation
The verification procedure shall be considered satisfied if
a) the arithmetic mean of the averaged readings for each of the two thermocouples over the 10 min period
+40
falls within the requirement of ( 830 ) °C and
0
b) the difference of the averaged readings for each of the two thermocouples over the 10 min period does
not exceed 40 °C.
At least one measurement shall be made on each thermocouple every 30 s in order to obtain the average.
NOTE The actual method of obtaining the average thermocouple reading over the period is not specified but it is
recommended that a recorder with averaging facilities be used in order to damp the variability caused by point
measurement.
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6.4 Further verification
If the verification is not successful, the flow rates shall be altered within the tolerances given in 5.4.2 and/or
distances altered within the tolerances given in 6.2 and a further verification carried out.
If no successful verification can be achieved within the tolerances given, then the burner system shall be
considered as incapable of providing the source of heat required by this European Standard.
6.5 Verification report
The position established for successful verification and flow rates used shall be recorded (see 8.1).
7 Test sample (Electric power and control cables with rated voltage up to and
including 600 V/1 000 V)
7.1 Sample preparation
The sample to be tested shall be a piece of cable not less than 1 200 mm long with approximately 100 mm of
sheath and outer coverings removed at each end. At each end of the test sample, each conductor shall be
suitably prepared for electrical connections, and, if there is more than one conductor, the exposed
conductors shall be spread apart to avoid contact with each other.
7.2 Sample mounting
The test sample shall be bent to form an approximate 'U' shape. The internal radius of each bend shall be
the manufacturer's declared minimum bending radius in normal use and the overall distance between the
vertical portions of the cable shall be (475 ± 10) mm as shown in Figure 8.
The test sample shall be mounted centrally on the wall using copper P clips. The clips, which shall be
earthed, shall support the cable at either end of the radiused section and in the centre as shown in Figure 8.
The type of clips used shall be detailed in the Test Report.
By agreement between the user and manufacturer of the cable alternative clips may be used for the testing
of multicore cable, but in this case the test shall only be considered valid for cable installed with such clips.
8 Cable test procedure (Electric power and control cables with rated voltage up to
and including 600 V/1 000 V)
8.1 General
The test procedure shall be carried out using the apparatus detailed in Clause 5.
Position the burner (40 ± 2) mm horizontally from the wall, and at the same vertical distance below the
bottom line of the cable as determined in the verification procedure for the distance between burner and
thermocouple centre lines.
8.2
...