SIST EN 54-18:2006
(Main)Fire detection and fire alarm systems - Part 18: Input/output devices
Fire detection and fire alarm systems - Part 18: Input/output devices
This European Standard specifies requirements, test methods and performance criteria for input/output devices connected to a transmission path of a fire detection and fire alarm system, used to receive and/or transmit electrical signals to or from the transmission path, necessary for the operation of the fire detection and fire alarm system and/or fire protection system.
An input/output device may be a physically separate device or its function may be integrated into another device in which case this European Standard may be used to assess this function.
Control and indicating equipment, and ancillary control and indicating equipment (e.g. repeater panels and fire brigade panels) are not covered by this European Standard.
Brandmeldeanlagen - Teil 18: Eingangs-/Ausgangsgeräte
Diese Europäische Norm legt Anforderungen, Prüfverfahren und Leistungsmerkmale für Eingangs-/Ausgangs-geräte
fest, die mit einem Übertragungsweg einer Brandmeldeanlage verbunden sind und die für den Emp-fang
und/oder das Senden eines elektrischen Signals zu oder von einem Übertragungsweg verwendet werden,
die für den Betrieb einer Brandmeldeanlage und/oder eines Brandschutzsystems erforderlich sind.
Ein Eingangs-/Ausgangsgerät kann ein getrenntes Gerät sein oder seine Funktion kann in andere Geräte in-tegriert
werden, wofür dann diese Norm dazu verwendet werden kann, diese Funktion zu beurteilen.
Brandmelderzentralen und deren Zubehör (z. B. Verstärker- und Feuerwehr-Bedienfelder) sind nicht Bestand-teil
dieser Europäischen Norm.
Systemes de détection et d'alarme incendie - Partie 18: Dispositifs d'entrée/sortie
La présente Norme européenne définit les exigences, les méthodes d'essai et les criteres de performance des dispositifs d'entrée/sortie raccordés a une voie de transmission d’un systeme de détection et d'alarme incendie et utilisés pour recevoir des signaux électriques d’une voie de transmission et/ou lui en transmettre, ces signaux étant nécessaires au fonctionnement du systeme de détection et d’alarme incendie et/ou du systeme de protection contre l’incendie.
Un dispositif d'entrée/sortie peut etre un dispositif séparé physiquement ou sa fonction peut etre intégrée dans un autre dispositif, auquel cas la présente Norme européenne peut etre utilisée pour évaluer cette fonction.
Les équipements de contrôle et de signalisation ainsi que les équipements auxiliaires de contrôle et de signalisation (par exemple, les tableaux répétiteurs et les tableaux pompiers) ne sont pas couverts par cette Norme européenne.
Sistemi za odkrivanje in javljanje požara ter alarmiranje – 18. del: Vhodno/izhodne naprave
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 54-18:2006
01-april-2006
Sistemi za odkrivanje in javljanje požara ter alarmiranje – 18. del: Vhodno/izhodne
naprave
Fire detection and fire alarm systems - Part 18: Input/output devices
Brandmeldeanlagen - Teil 18: Eingangs-/Ausgangsgeräte
Systemes de détection et d'alarme incendie - Partie 18: Dispositifs d'entrée/sortie
Ta slovenski standard je istoveten z: EN 54-18:2005
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
SIST EN 54-18:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 54-18:2006
---------------------- Page: 2 ----------------------
SIST EN 54-18:2006
EUROPEAN STANDARD
EN 54-18
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 13.220.20
English Version
Fire detection and fire alarm systems - Part 18: Input/output
devices
Systèmes de détection et d'alarme incendie - Partie 18: Brandmeldeanlagen - Teil 18: Eingangs-/Ausgangsgeräte
Dispositifs d'entrée/sortie
This European Standard was approved by CEN on 26 October 2005.
CEN 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 CEN 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 CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 54-18:2005: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
Contents Page
Foreword.3
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms, definitions and abbreviations.7
3.1 Terms and definitions .7
3.2 Abbreviations.7
4 Requirements.7
4.1 Compliance.7
4.2 Monitoring of detachable devices.7
4.3 Marking and data .8
4.4 Documentation.8
4.5 Requirements for software controlled devices .8
5 Tests.10
5.1 General.10
5.2 Performance and variation in supply parameters .12
5.3 Dry heat (operational).12
5.4 Cold (operational) .13
5.5 Damp heat, cyclic (operational).14
5.6 Damp heat, steady state (endurance).15
5.7 Sulphur dioxide (SO ) corrosion (endurance) .16
2
5.8 Shock (operational) .17
5.9 Impact (operational).18
5.10 Vibration, sinusoidal (operational).19
5.11 Vibration, sinusoidal (endurance).20
5.12 Electromagnetic Compatibility (EMC) Immunity tests.21
Annex ZA (informative) Relationship of this European Standard with the Construction Products
Directive 89/106/EEC .22
ZA.1 Scope and relevant clauses.22
ZA.2 Procedures for the attestation of conformity of input/output devices covered by this
standard.23
ZA.3 CE Marking and labelling and accompanying documentation .28
ZA.4 EC certificate and declaration of conformity .29
Bibliography .31
2
---------------------- Page: 4 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
Foreword
This European Standard (EN 54-18:2005) has been prepared by Technical Committee CEN/TC 72 “Fire
detection and fire alarm systems”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2006, and conflicting national standards shall be withdrawn at
the latest by December 2008.
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this European
Standard.
EN 54 “Fire detection and fire alarm systems” consists of the following parts:
Part 1: Introduction
Part 2: Control and indicating equipment
Part 3: Fire alarm devices – Sounders
Part 4: Power supply equipment
Part 5: Heat detectors - Point detectors
Part 7: Smoke detectors - Point detectors using scattered light, transmitted light or ionization
Part 10: Flame detectors - Point detectors
Part 11: Manual call points
Part 12: Smoke detectors - Line detectors using an optical light beam
Part 13: Compatibility assessment of system components
Part 14: Guidelines for planning, design, installation, commissioning, use and maintenance
Part 15: Point type multi-sensor fire detectors
Part 16: Voice alarm control and indicating equipment
Part 17: Short-circuit isolators
Part 18: Input/output devices
Part 20: Aspirating smoke detectors
Part 21: Alarm transmission and fault warning routing equipment
Part 22: Line-type heat detectors
Part 23: Fire alarm devices - Visual alarms
3
---------------------- Page: 5 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
Part 24: Components of voice alarm systems – Loudspeakers
Part 25: Components using radio links and system requirements
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
4
---------------------- Page: 6 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
Introduction
The term input/output devices, used in this European Standard, covers a wide range of different types of
devices, which are intended for different applications, and may therefore have different functions. This
European Standard does not therefore include detailed functional requirements for the input/output devices
but requires that their function is sufficiently specified by the manufacturer and that they function correctly in
accordance with the manufacturer’s specification.
5
---------------------- Page: 7 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
1 Scope
This European Standard specifies requirements, test methods and performance criteria for input/output
devices connected to a transmission path of a fire detection and fire alarm system, used to receive and/or
transmit electrical signals to or from the transmission path, necessary for the operation of the fire detection
and fire alarm system and/or fire protection system.
An input/output device may be a physically separate device or its function may be integrated into another
device in which case this European Standard may be used to assess this function.
Control and indicating equipment, and ancillary control and indicating equipment (e.g. repeater panels and fire
brigade panels) are not covered by this European Standard.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 54-1:1996, Fire detection and fire alarm systems — Part 1: Introduction
EN 50130-4:1995, Alarm systems — Part 4: Electromagnetic compatibility - Product family standard: Immunity
requirements for components of fire, intruder and social alarm systems
EN 60068-1, Environmental testing — Part 1: General and guidance (IEC 60068-1:1988 + Corrigendum 1988
+ A1:1992)
EN 60068-2-1, Environmental testing — Part 2: Tests — Tests A: Cold (IEC 60068-2-1:1990)
EN 60068-2-2, Basic environmental testing procedures — Part 2: Tests — Tests B: Dry heat (IEC 60068-2-
2:1974 + IEC 60068-2-2A:1976)
EN 60068-2-6, Environmental testing — Part 2: Tests — Test Fc: Vibration, (sinusoidal) (IEC 60068-2-6:1995
+ Corrigendum 1995)
EN 60068-2-27, Basic environmental testing procedures — Part 2: Tests — Test Ea and guidance: Shock
(IEC 60068-2-27:1987)
EN 60068-2-30, Environmental testing — Part 2: Tests — Test Db and guidance: Damp heat, cyclic (12 + 12
hour cycle) (IEC 60068-2-30:1980 + A1:1985)
EN 60068-2-42, Environmental testing — Part 2-42: Tests — Test Kc: Sulphur dioxide test for contacts and
connections (IEC 60068-2-42:2003)
EN 60068-2-75, Environmental testing — Part 2: Tests — Test Eh: Hammer tests (IEC 60068-2-75:1997)
EN 60068-2-78, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state (IEC 60068-
2-78:2001)
6
---------------------- Page: 8 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 54-1:1996 and the following
apply.
3.1.1
input/output device
device connected to a transmission path of a fire detection and fire alarm system, used to receive and/or
transmit electrical signals necessary for the operation of the fire detection and fire alarm system
3.1.2
conditioning
exposure of a specimen to environmental conditions in order to determine the effect of such conditions on the
specimen
3.1.3
recovery
treatment of a specimen, after conditioning, so that the properties of the specimen may be stabilised before
measurement
3.2 Abbreviations
For the purposes of this European Standard, the following abbreviations apply:
CIE: Control and indicating equipment.
EMC: Electromagnetic compatibility.
4 Requirements
4.1 Compliance
In order to comply with this European Standard, the input/output devices shall meet the requirements of this
clause, which shall be verified by inspection and engineering assessment, shall be tested as described in
Clause 5 and shall meet the requirements of the tests. For input/output devices integrated into another device,
which is already covered by an existing European Standard, the environmental conditioning shall be
performed in accordance with that European Standard, with the addition of the functional tests before, during
and/or after conditioning, as required in this European Standard.
In some detector standards/specifications, the dry heat (operational) test is conducted in special test
equipment (e.g. in the heat tunnel for heat detectors). The required functional testing of the integrated
input/output device before, during and after the dry heat conditioning may be done in this equipment, if this is
possible without disrupting the detector measurements. Otherwise, a separate dry heat test, with the same
conditioning, shall be conducted. For heat detectors, the test temperature is the maximum application
temperature.
4.2 Monitoring of detachable devices
If an input/output device is detachable (i.e. it is attached to a detachable mounting base), then a means shall
be provided for a remote monitoring system (e.g. the control and indicating equipment) to detect the removal
of the device from the base, in order to give a fault signal.
7
---------------------- Page: 9 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
4.3 Marking and data
4.3.1 Marking
Each input/output device shall be clearly marked with the following information:
a) number and date of this European Standard (i.e. EN 54-18:2005);
b) name or trademark of the manufacturer or supplier;
c) model designation (type or number);
d) wiring terminal designations;
e) some mark(s) or code(s) (e.g. a serial number or batch code), by which the manufacturer can identify, at
least, the date or batch and place of manufacture, and the version number(s) of any software, contained
within the device.
For detachable devices, the head shall be marked with a), b) and d), and the base shall be marked with at least
b) (i.e. its own model designation) and c).
Where any marking on the device uses symbols or abbreviations not in common use then these shall be
explained in the data supplied with the device.
The marking shall be visible during installation and shall be accessible during maintenance.
The markings shall not be placed on screws or other easily removable parts.
NOTE Where ZA.3 covers the same information as required by this subclause, the requirements of this subclause
are met.
4.3.2 Data
Input/output devices shall be supplied with sufficient technical, installation and maintenance data to ensure
their correct installation and operation. These data shall include the parameters necessary to define the input
and/or output functions (e.g. output voltage and current ratings, alarm and fault trip levels, logic levels). If all of
these data are not supplied with each device, then reference to the appropriate data sheet(s) shall be given on,
or with, each device. To enable correct operation of the input/output device, these data shall describe the
requirements for the correct processing of the signals from the device. This can be in the form of a full
technical specification of these signals, a reference to the appropriate signalling protocol or a reference to
suitable types of control and indicating equipment etc.
4.4 Documentation
The manufacturer shall prepare and provide design documentation (e.g. drawings, parts lists, block diagrams,
circuit diagrams). Where appropriate, this shall include documentation of the signal processing principle.
4.5 Requirements for software controlled devices
4.5.1 General
For input/output devices which rely on software control in order to fulfil the requirements of this European
Standard, the requirements of 4.5.2, 4.5.3 and 4.5.4 shall be met.
8
---------------------- Page: 10 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
4.5.2 Software documentation
4.5.2.1 The manufacturer shall prepare documentation which gives an overview of the software design.
This shall be submitted to the testing authority together with the input/output devices. This documentation
shall be in sufficient detail for the design to be inspected for compliance with this European Standard and shall
include at least the following:
a) a functional description of the main program flow (e.g. as a flow diagram or structogram) including:
1) a brief description of the modules and the functions that they perform;
2) the way in which the modules interact;
3) the overall hierarchy of the program;
4) the way in which the software interacts with the hardware of the device;
5) the way in which the modules are called, including any interrupt processing;
b) a description of which areas of memory are used for the various purposes (e.g. the program, site specific
data and running data);
c) a designation, by which the software and its version can be uniquely identified.
4.5.2.2 The manufacturer shall also prepare detailed design documentation, which only needs to be
provided if required by the testing authority. It shall comprise at least the following:
a) an overview of the whole system configuration, including all software and hardware components;
b) a description of each module of the program, containing at least:
1) the name of the module;
2) a description of the tasks performed;
3) a description of the interfaces, including the type of data transfer, the valid data range and the
checking for valid data;
c) full source code listings, as hard copy or in machine-readable form (e.g. ASCII-code), including all global
and local variables, constants and labels used, and sufficient comment for the program flow to be
recognized;
d) details of any software tools used in the design and implementation phase (e.g. CASE-tools, compilers
etc.).
4.5.3 Software design
In order to ensure the reliability of the device, the following requirements for software design shall apply:
a) the software shall have a modular structure;
b) the design of the interfaces for manually and automatically generated data shall not permit invalid data to
cause error in the program operation;
c) the software shall be designed to avoid the occurrence of deadlock of the program flow.
9
---------------------- Page: 11 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
4.5.4 The storage of programs and data
The program necessary to comply with this European Standard, and any preset data such as manufacturer's
settings, shall be held in non-volatile memory. Writing to areas of memory containing this program and data
shall only be possible by the use of some special tool or code and shall not be possible during normal
operation of the device.
Site-specific data shall be held in memory which will retain data for at least 2 weeks without external power to
the device, unless provision is made for the automatic renewal of such data, following loss of power, within 1 h
of power being restored.
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
Unless otherwise stated in a test procedure, the testing shall be carried out after the test specimen has been
allowed to stabilize in the standard atmospheric conditions for testing as described in EN 60068-1 as follows:
a) temperature : (15 to 35) °C;
b) relative humidity : (25 to 75) %;
c) air pressure : (86 to 106) kPa.
If variations in these parameters have a significant effect on a measurement, then such variations shall be
kept to a minimum during a series of measurements carried out as part of one test on one specimen.
5.1.2 Operating conditions for tests
If a test method requires a specimen to be operational, then the specimen shall be connected to suitable
supply and monitoring equipment with characteristics as required by the manufacturer's data. Unless
otherwise specified in the test method, the supply parameters applied to the specimen shall be set within the
manufacturer's specified range(s) and shall remain substantially constant throughout the tests. The value
chosen for each parameter shall normally be the nominal value, or the mean of the specified range.
The details of the supply and monitoring equipment used shall be given in the test report.
5.1.3 Mounting arrangements
When necessary, the specimen shall be mounted by its normal means of attachment in accordance with the
manufacturer's instructions. If these instructions describe more than one method of mounting then the method
considered to be most unfavourable shall be chosen for each test.
5.1.4 Functional test
Each function of the input/output device shall be activated, by a suitable means in accordance with the
manufacturer's specification, and appropriate observations or measurements shall be made to confirm the
correct operation of the device.
NOTE The variety and the diversity of the equipment within the scope of this European Standard make it difficult to
define the precise details of this functional test. This functional test is intended to exercise each function of the device in a
simple way. A more complete assessment of the performance of these functions, in accordance with the manufacturer's
specification, is made in the performance and variation in supply voltage test (see 5.2).
10
---------------------- Page: 12 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
5.1.5 Tolerances
Unless otherwise stated, the tolerances for the environmental test parameters shall be as given in the basic
reference standards for the test (e.g. the relevant parts of EN 60068-2).
If a requirement or test procedure does not specify a tolerance or deviation limits, then deviation limits of ± 5 %
shall be applied.
5.1.6 Provision for tests
Twelve specimens are required to conduct the tests as indicated in the test schedule (see 5.1.7). These
specimens shall be numbered 1 to 12 arbitrarily.
NOTE The number of specimens may be reduced to a minimum of 9 if the same specimen is used for more than one
EMC test (see Table 1, note).
The specimens submitted shall be representative of the manufacturer’s normal production with regard to their
construction.
5.1.7 Test schedule
The specimens shall be tested according to the test schedule in Table 1.
Table 1 — Test schedule for input/output devices
Test Clause Specimen number
Performance and variation of supply parameters 5.2 1
Dry heat (operational) 5.3 2
Cold (operational) 5.4 2
Damp heat, cyclic (operational) 5.5 3
Damp heat, steady state (endurance) 5.6 4
SO corrosion (endurance) 5.7 5
2
Shock (operational) 5.8 6
Impact (operational) 5.9 7
Vibration (operational) 5.10 8
Vibration (endurance) 5.11 8
Electromagnetic Compatibility (EMC), immunity tests 5.12 9 to 12*
NOTE In the interests of test economy, it is permitted to use the same specimen for more than
one EMC test. In this case, intermediate functional test(s) on the specimen(s) used for more than
one test may be deleted, and a functional test conducted at the end of the sequence of tests.
However it should be noted that in the event of a failure, it may not be possible to identify which test
exposure caused the failure (see EN 50130-4:1995, Clause 4).
11
---------------------- Page: 13 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
5.2 Performance and variation in supply parameters
5.2.1 Object
To demonstrate the ability of the input/output device to function correctly in accordance with the
manufacturer's specifications, at the upper and lower limits of the supply parameters specified by the
manufacturer.
5.2.2 Test procedure
The input and output device shall be connected to suitable supply and monitoring equipment, as specified by
the manufacturer. The performance of each function of the input/output device shall be tested, according to
the manufacturer's specification, at the upper and at the lower limits of the supply parameter (e.g. voltage)
range(s). The testing of the device’s performance shall include tests and measurements in all operating
modes with the maximum and minimum parameters and parameter settings specified by the manufacturer for
the input and/or output lines (see 4.3.2).
If it is not possible to adjust the input/output device's supply voltage to the upper and lower limits, then the
performance shall be tested at the worst case conditions of the supply voltage to the supply and monitoring
equipment, and the line impedance, allowed by the manufacturer's specifications.
5.2.3 Requirements
The input/output device shall function correctly within the manufacturer's specifications.
5.3 Dry heat (operational)
5.3.1 Object
To demonstrate the ability of the input/output device to function correctly at high ambient temperatures, which
may occur for short periods in the service environment.
5.3.2 Test procedure
5.3.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-2, Test Bb and as described in 5.3.2.2
to 5.3.2.6.
5.3.2.2 Initial measurements
Before conditioning, the functional test shall be conducted as described in 5.1.4.
5.3.2.3 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to its supply and monitoring
equipment as described in 5.1.2.
5.3.2.4 Conditioning
The following conditioning shall be applied:
Temperature: (+ 55 ± 2) °C
Duration: 16 h
12
---------------------- Page: 14 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
5.3.2.5 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any unwanted or unspecified
functioning.
During the last hour of the conditioning period, a functional test shall be conducted as described in 5.1.4.
5.3.2.6 Final measurements
After a recovery period of at least 1 h at laboratory conditions, the functional test shall be conducted as
described in 5.1.4.
5.3.3 Requirements
No unwanted or unspecified function shall occur during conditioning.
In the functional tests, the specimen shall function correctly as specified by the manufacturer.
5.4 Cold (operational)
5.4.1 Object
To demonstrate the ability of the input/output device to function correctly at low ambient temperatures
appropriate to the anticipated service environment.
5.4.2 Test procedure
5.4.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-1, Test Ab and as described in 5.4.2.2
to 5.4.2.6.
5.4.2.2 Initial measurements
Before conditioning, the functional test shall be conducted as described in 5.1.4.
5.4.2.3 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to its supply and monitoring
equipment as described in 5.1.2.
5.4.2.4 Conditioning
The following conditioning shall be applied:
Temperature: (−10 ± 3) °C
Duration: 16 h
5.4.2.5 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any unwanted or unspecified
functioning.
During the last hour of the conditioning period, a functional test shall be conducted as described in 5.1.4.
13
---------------------- Page: 15 ----------------------
SIST EN 54-18:2006
EN 54-18:2005 (E)
5.4.2.6 Final measurements
After a recovery period of at least 1 h at laboratory conditions, the functional test shall be conducted as
described in 5.1.4.
5.4.3 Requirements
No unwanted or unspecified function shall occur during conditioning.
In the functional tests, the specimen shall function corre
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.