prEN 54-25

SLOVENSKI STANDARD
01-oktober-2015
Sistemi za odkrivanje in javljanje požara ter alarmiranje - 25. del: Sestavni deli za
radijske povezave
Fire detection and fire alarm systems - Part 25: Components using radio links
Brandmeldeanlagen - Teil 25: Bestandteile, die Hochfrequenz-Verbindungen nutzen
Ta slovenski standard je istoveten z: prEN 54-25
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2015
ICS 13.220.20 Will supersede EN 54-25:2008
English Version
Fire detection and fire alarm systems - Part 25: Components
using radio links
Brandmeldeanlagen - Teil 25: Bestandteile, die
Hochfrequenz-Verbindungen nutzen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 72.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 54-25:2015 E
worldwide for CEN national Members.

Contents Page
Foreword .5
Introduction .7
1 Scope .8
2 Normative references .8
3 Terms, definitions and abbreviations .9
3.1 Terms and definition .9
3.2 Abbreviations . 11
4 Product characteristics . 11
4.1 General . 11
4.1.1 General . 11
4.1.2 Documentation . 12
4.2 Response delay (response time). 12
4.2.1 Delay of alarm message . 12
4.2.2 Activation of outputs . 13
4.3 Operational reliability . 13
4.3.1 Detection of removal . 13
4.3.2 Immunity to site attenuation . 13
4.3.3 Identification of RF linked component . 14
4.3.4 Availability of RF link in two or more technically similar systems coming from the same
manufacturer . 14
4.3.5 Availability of the RF link in the presence of other band users . 14
4.3.6 Loss of communication . 14
4.3.7 Antenna . 14
4.3.8 Power supply equipment . 15
4.4 Performance parameters under fire conditions . 15
4.5 Tolerance to supply voltage — Variation in supply parameters . 15
4.6 Durability of performance parameters under fire conditions . 16
4.6.1 Temperature resistance . 16
4.6.2 Humidity resistance . 16
4.6.3 Shock and vibration resistance . 16
4.6.4 Corrosion resistance — Sulfur Dioxide SO2 (endurance) . 17
4.6.5 Electrical stability . 17
5 Testing, assessment and sampling methods . 17
5.1 General . 17
5.1.1 Atmospheric conditions for tests . 17
5.1.2 Operating conditions for tests . 18
5.1.3 Mounting arrangements . 18
5.1.4 Tolerances . 18
5.1.5 Provision for tests . 18
5.1.6 Test schedule . 19
5.1.7 Repeatability test . 22
5.1.8 Reproducibility . 22
5.2 Response delay (response time to fire) . 23
5.2.1 Delay of alarm message . 23
5.2.2 Activation of outputs . 23
5.3 Operational reliability . 23
5.3.1 Detection of removal . 23
5.3.2 Immunity to site attenuation . 24
5.3.3 Identification of RF linked components . 24
5.3.4 Availability of RF link in two or more technically similar systems coming from the same

manufacturer . 25
5.3.5 Availability of the RF link in the presence of other band users . 25
5.3.6 Loss of communication . 26
5.3.7 Antenna . 27
5.3.8 Power supply equipment . 27
5.4 Performance parameters under fire conditions . 30
5.5 Tolerance to supply voltage — Variation in supply parameters . 30
5.5.1 Test procedure . 30
5.5.2 Test requirements . 30
5.6 Durability of performance parameters under fire conditions . 30
5.6.1 Temperature resistance . 30
5.6.2 Humidity resistance . 34
5.6.3 Shock and vibration resistance . 38
5.6.4 Corrosion resistance . 43
5.6.5 Electrical stability . 44
6 Assessment and verification of constancy of performance (AVCP) . 50
6.1 General . 50
6.2 Type testing . 51
6.2.1 General . 51
6.2.2 Test samples, testing and compliance criteria . 51
6.2.3 Test reports . 52
6.3 Factory production control FPC) . 52
6.3.1 General . 52
6.3.2 Requirements . 53
6.3.3 Product specific requirements . 55
6.3.4 Initial inspection of factory and FPC . 56
6.3.5 Continuous surveillance of FPC . 56
6.3.6 Procedure for modifications. 56
6.3.7 One-off products, pre-production products, (e.g. prototypes) and products produced in

very low quantities . 57
7 Classification and designation . 57
8 Marking, labelling and packaging . 57
Annex A (normative) Test configuration by using radio frequency shielded test equipment . 59
A.1 Radio frequency shielded test equipment for the components transmitting and receiving

the useful signal . 59
A.2 Determination of the transmission threshold A . 62
A.2.1 General . 62
A.2.2 Modified test specimens and support equipment . 62
A.2.3 Measurement procedure . 63
A.3 Shielded box performance verification procedure . 63
Annex B (normative) Functionality Matrix Guidance . 71
Annex C (informative) Data and calculation of the service life of the autonomous power source(s). 73
C.1 General . 73
C.2 Example Star Network . 73
C.2.1 System Description . 73
C.2.2 Worst-case setup . 73
C.2.3 Calculation of the current consumption . 73
C.2.4 Calculation of service life time . 74
C.2.5 Conclusion . 74
C.2.6 Example Mesh Network . 74
Annex D (informative) Tests for radio systems . 76
D.1 Introduction . 76
D.2 System setup . 76
D.3 Requirements and Tests . 76
D.3.1 Response Delay . 76
D.3.2 Availability of RF link in two or more technically similar systems coming from the same

manufacturer . 77
D.3.3 Loss of communication . 77
D.3.4 Fault signal after component failure . 77
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU

Construction Products Regulation . 78
ZA.1 Scope and relevant characteristics . 78
ZA.2 Procedure for assessment and verification of constancy of performance (AVCP) of

components using radio links . 80
ZA.2.1 System of AVCP . 80
ZA.2.2 Declaration of performance (DoP) . 81
ZA.3 CE marking and labelling . 85
Bibliography . 88

Foreword
This document (prEN 54-25:2015) has been prepared by Technical Committee CEN/TC 72 “Fire detection
and fire alarm systems”, the secretariat of which is held by BSI.
This document is currently submitted to the Enquiry.
This document will supersede EN 54-25:2008.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports the basic requirements of Regulation (EU) 305/2011.
For relationship with EU Regulation (EU) 305/2011, see informative Annex ZA which is an integral part of this
document.
EN 54-25 has been revised to align with the Construction Products Regulation (CPR). It includes new and
revised clauses and annexes as follows:
— Clause 4, Requirements;
— Clause 5, Testing, assessment and sampling methods;
— Clause 6, Assessment and verification of consistency of performance (AVCP);
— Clause 7, Classification and designation;
— Clause 8, Marking labelling and packaging;
— Annex A, Test configuration by using radio frequency shielded test equipment updated new technical
aspects updated;
— Annex B, Functionality Matrix Guidance added;
— Annex C, Tests for radio systems;
— Annex D, Data and calculation of the service life of the autonomous power source(s);
— Annex ZA has been revised to align with the Construction Products Regulation (CPR).
The main technical changes are as follow:
— RF-receiver parameters referenced to ETSI standards;
— Single channel systems not allowed;
— Addition of output devices.
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
[CEN Technical Specification];
— 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: Resettable line-type heat detectors [currently at acceptance stage];
— Part 23: Fire alarm devices — Visual alarms devices;
— Part 24: Components of voice alarm systems — Loudspeakers;
— Part 25: Components using radio links [the present document; currently at Enquiry stage];
— Part 26: Carbon monoxide detectors — Point detectors
— Part 27: Duct smoke detectors;
— Part 28: Non-resettable line type heat detectors [currently at voting stage];
— Part 29: Multi-sensor fire detectors — Point detectors using a combination of smoke and heat sensors;
— Part 30: Multi-sensor fire detectors — Point detectors using a combination of carbon monoxide and heat
sensors;
— Part 31: Multi-sensor fire detectors — Point detectors using a combination of smoke, carbon monoxide
and optionally heat sensors;
— Part 32: Planning, design, installation, commissioning, use and maintenance of voice alarm systems
[CEN Technical Specification].
NOTE This list includes standards that are in preparation and other standards may be added. For current status of
published standards refer to www.cen.eu.
Introduction
The aim of this draft European Standard is to define additional requirements to other parts of EN 54 and tests
that allow radio fire detection systems and components complying with them to be at least as efficient and
stable as wired fire detection systems and components complying with the current requirements of cable
based systems in the EN 54 standards.
System and component aspects are dealt with in this draft European Standard because it is difficult to
describe the components of a radio-linked system separately.
Capacity limitations with respect to the use of radio components may be specified in national technical rules or
guidelines.
Technical aspects of the assessment of frequencies, bands and channels should be considered.
1 Scope
This draft European Standard specifies requirements, test methods and performance criteria for components
used in fire alarms systems, installed in and around buildings (either permanently or temporarily), which use
radio frequency links (RF links) to communicate. It also provides requirements for the evaluation of conformity
of the components to the requirements of this draft European Standard.
Where components work together and this requires knowledge of the system design, this document also
specifies requirements on the system.
This draft European Standard provides for the assessment and verification of constancy of performance
(AVCP) of components using radio links to this EN.
When the fire detection and fire alarm systems (FDAS) use wired and RF links, the relevant parts of EN 54
apply together with this document. Requirements relevant to wire links are superseded or modified by those
included in this draft European Standard.
This draft European Standard does not restrict:
— the intended use of radio spectrum, e.g. frequency, power output of devices;
— the allowed maximum number of the components using RF links within the FDAS or one transmission
path;
— the allowed maximum number of the components affected by loss of one transmission path.
These requirements relate to national regulations and can vary from member state to member state.
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 54 (all parts), Fire detection and fire alarm systems
EN 50130-4:2011, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard:
Immunity requirements for components of fire, intruder, hold up, CCTV, access control and social alarm
systems
EN 50130-5:2011, Alarm systems — Part 5: Environmental test methods
EN 60068-1:1994, Environmental testing — Part 1: General and guidance (IEC 60068-1:1988)
EN 60068-2-1:2007, Environmental testing — Part 2-1: Tests — Test A: Cold (IEC 60068-2-1:2007)
EN 60068-2-2:2007, Environmental testing — Part 2-2: Tests — Test B: Dry heat (IEC 60068-2-2:2007)
EN 60068-2-6:2008, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal) (IEC 60068-2-
6:2007)
EN 60068-2-27:2009, Environmental testing — Part 2-27: Tests — Test Ea and guidance: Shock (IEC 60068-
2-27:2008)
EN 60068-2-30:2005, Environmental testing — Part 2-30: Tests — Test Db: Damp heat, cyclic (12 h + 12 h
cycle) (IEC 60068-2-30:2005)
EN 60068-2-42:2003, Environmental testing — Part 2-42: Tests — Test Kc: Sulphur dioxide test for contacts
and connections (IEC 60068-2-42:2003)
EN 60068-2-78:2013, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state
(IEC 60068-2-78:2012)
EN 300 220 (all parts), Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range
Devices (SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz frequency range with power levels
ranging up to 500 mW
3 Terms, definitions and abbreviations
3.1 Terms and definition
For the purposes of this document, the terms, definitions and abbreviations given in the relevant part of
EN 54, and the following apply.
3.1.1
antenna
element of a radio component of the fire detection and fire alarm system (FDAS) that allows coupling between
the component and the media where radio frequency (RF) waves are propagated
3.1.2
assigned band
frequency band within which the equipment is authorized to operate
3.1.3
autonomous power source
independent power supply equipment (i.e. without any link with the public power supply or an equivalent
system) not rechargeable during operation and able by itself to allow the supplied component to run
Note 1 to entry: An autonomous power source is e.g. a primary battery.
3.1.4
base station
transceiver in the system which communicates with a certain number of components
3.1.5
collision
simultaneous transmissions, from two or more transmitters belonging to the same system, of sufficient signal
strength to cause, by mutual interaction, corruption or obliteration of the information carried by the RF signals
3.1.6
commissioning attenuation
maximum attenuation between the components (not taking into account the attenuation reserve) at which
commissioning is still possible and permitted
3.1.7
compatibility
capacity of a component of the system to operate with another component of this system, in the limits
specified by the manufacturer and by the applicable product standard if this standard exists and in specified
configurations of the system
3.1.8
identification code
part of a message used to identify a transmitting RF communication device belonging to the system
3.1.9
intermediate element
device connected to a transmission path of a fire detection and fire alarm system, used to receive and/or
transmit signals necessary for the operation of the fire detection and fire alarm system
Note 1 to entry: An intermediate element meets the requirements of an input/output device in accordance with EN 54–
18 but it is not restricted to electrical signals.
3.1.10
manufacturer
natural or legal person, who places the product on the market under his own name
Note 1 to entry: Normally, the manufacturer designs and manufactures the product himself. A manufacturer can also
design, manufacture, assemble, pack, process or label the product as subcontractor or he assembles, packs, processes,
or labels products as ready-made products.
3.1.11
quiescent state
normal operation condition other than fire alarm condition, fault condition, disabled condition, and test
condition
3.1.12
radio cell
set of components using radio links that share a common base station
3.1.13
radio part
component or part of the component incorporating the receiver and/or transmitter
Note 1 to entry: The radio part can include a power supply, e.g. an autonomous power source.
3.1.14
receiver
device which receives the RF energy corresponding to a RF link
Note 1 to entry: The receiver can be incorporated in a component of the FDAS.
3.1.15
reference level
signal level at which messages are received reliably
Note 1 to entry: The reference level is used as a basic level for other radio tests.
3.1.16
RF interference
RF transmission from any other source other than any component of the FDAS that may cause corruption or
obliteration of wanted signals and not conforming to the definition of collision or message substitution
3.1.17
RF transmission path
RF Link
direct radio interconnection between two wireless components regardless the number of operational
frequencies within one assigned band
3.1.18
service life
period of useful life of an autonomous power source under specified conditions
3.1.19
site attenuation
degradation of the RF signal due to either path loss or a change in the environment of the FDAS after its
installation
Note 1 to entry: Site attenuation can be changed by e.g. installation or relocation of reflection or absorption materials.
3.1.20
special tool
device not normally carried by the public (e.g. a key), normally provided by the manufacturer and which is
used for opening the enclosure of the component to detach the antenna
Note 1 to entry: It is intended to deter unauthorized access to the antenna, while being available on site either at a
defined location or from a “responsible person” familiar with and having knowledge of the system.
3.1.21
transmitter
device which generates the RF energy necessary for a RF link
Note 1 to entry: The transmitter can be incorporated in a component of the FDAS.
3.1.22
threshold
attenuation value (dB) at which 80 % of transmission messages are received reliably
3.1.23
useful signal
data element that is communicated point to point between wireless components or parts of wireless systems
representing the normal operational characteristics of the tested device
EXAMPLE Examples for useful signals are alarm, fault, supervisory or command messages.
3.2 Abbreviations
CIE Control and indicating equipment
EMC Electromagnetic compatibility
FDAS Fire detection and fire alarm systems
PSE Power supply equipment
RF Radio frequency
RL Reference level
4 Product characteristics
4.1 General
4.1.1 General
In order to comply with this standard, components using radio links shall meet the requirements of this clause,
which shall be verified by visual inspection or engineering assessment and shall be tested as described in
Clause 5 and shall meet the test requirements of the tests.
The requirements of this draft European Standard shall be applied, together with requirements of the relevant
part of EN 54, where the radio-linked component has the same function as the component covered by that
part and when not otherwise specified in this draft European Standard.
For example, an RF linked component having the function of a heat detector shall comply with EN 54–5 and a
component having the function of a manual call point shall comply with EN 54–11.
For systems using frequencies in the range from 25 MHz to 1 GHz the requirements of EN 300 220 (all parts)
shall be fulfilled.
4.1.2 Documentation
The manufacturer shall prepare relevant detailed documentation to provide a specification of the system in
order to evaluate FDAS wireless components with this standard.
This documentation shall include the following:
— a detailed description of the system architecture (text and graphical);
— a list of the relevant components of the fire detection and fire alarm system with description of the
maximum numbers of supported components on each base station (e.g. CIE or gateway);
— description of power sources (autonomous or external) or in the case of autonomous power source this
shall include the type and numbers of batteries, and associated electronic circuit operational
characteristics;
— hardware and software details of each component;
— alternative modes of configuration or operation;
— operational frequency list and frequency bands ;
— topology of the system (e.g. Mesh-system, Star-system);
— auto gain control or transmitter power level adjustment;
— details of commissioning/installation procedures;
— description of any communication protocols and latency times;
— carrier wave modulation techniques;
— details about frequency hopping;
— RF transmitter and receiver circuitry and Antenna characteristics;
— test reports to demonstrate the conformity of the components with the Construction Products Regulations
(CPR), to the relevant part(s) of the EN 54 series;
— test reports to demonstrate conformity with other directives (e.g. Radio equipment directive (RED), Low
voltage directive (LVD), Electromagnetic compatibility directive (EMC, directive)).
NOTE Additional information may be required by the certification body to access the FDAS component with this draft
European Standard.
4.2 Response delay (response time)
4.2.1 Delay of alarm message
The components of the system shall use a transmission protocol to ensure that no alarm message is lost.
An alarm message shall be delivered to the base station within 10 s.
If multiple alarm messages are generated simultaneously, the first shall be delivered to the base station within
10 s, the last withing 100 s.
4.2.2 Activation of outputs
The components of the system shall use the transmission protocol to ensure that every activation message is
reliably delivered to the intended component. An output activation command shall be delivered to the intended
components within at most 10 s after the output activation command is received by the base station. If an
output activation command shall be delivered to multiple components, the last component shall receive it
within at most 100 s after the activation command is received by the base station. If the respective product
regulation requires the synchronization of outputs, synchronization shall be established before the activation
of the outputs.
4.3 Operational reliability
4.3.1 Detection of removal
This clause is only applicable to devices where the position is essential for the intended function of the device
e.g. point detectors, manual call points, sounders, beacons.
Non-destructive removal of the device from its position (e.g. wall, ceiling) shall be detected and indicated as a
fault.
If the device consists of separable parts for the communication and/or for the function, the removal of any of
these parts from the device shall be detected and indicated fault.
4.3.2 Immunity to site attenuation
The manufacturer shall provide means either in the component itself or by the system configuration to ensure
that a site attenuation, which may be caused by influences for different reasons on site, may not affect the RF
link adversely in a way that communication between components is not possible. This reserve of site
attenuation shall be 30 dB.
This reserve of site attenuation can be reduced by 15 dB with the use of at least one of the following methods
to increase the reliability of the RF link:
— automatic alteration of the directional radiation characteristics of the transmitter or receiver antenna;
— frequency diversity, ability to change carrier frequency by at least 1 MHz (frequency hop to next carrier
frequency);
— space diversity, the distance separation between one or more antennae (normally with similar
characteristics) of at least one wavelength;
— pattern diversity with two or more co-located antennas with different radiation patterns (no more than
6 dB difference), together able to cover a larger portion of angle space;
— polarization diversity, pairs of antennas with orthogonal polarizations;
— multipath transmission, the target point of the useful signal (e.g. CIE, base station, other radio
component) can be reached automatically via several independent radio paths (radio component with at
least two independent transmission paths).
The manufacturer shall provide the necessary documentation and equipment for the assessment which
permits the full functionality of the component to be assessed.
The requirements are verified by a documentation assessment and test accordance with 5.3.2.
4.3.3 Identification of RF linked component
Each RF linked component shall be identified by an individual identification code as belonging to one specific
FDAS.
The manufacturer shall provide means to ensure that a RF linked component shall not be accepted by other
FDAS.
The test shall be carried out in accordance with 5.3.3.
The manufacturer shall provide the necessary documentation and/or means for the assessment of this
requirement.
4.3.4 Availability of RF link in two or more technically similar systems coming from the same
manufacturer
In the case of two or more technically similar systems coming from the same manufacturer operating within
the radio range it shall be ensured that the RF links do not mutually impede one another.
The manufacturer shall specify the means. The means shall be suitable to ensure the availability of all parts of
the system in all expected system configurations.
The test shall be carried out in accordance with 5.3.4.
4.3.5 Availability of the RF link in the presence of other band users
It shall be ensured that if another legal band user will continually transmit e.g. in case of a defect, that own
signal transmission and communication is possible.
These measures shall ensure that an external user who uses the maximum permitted limits in the assigned
band or sub-band, e.g. bandwidth, does not cause interference.
The manufacturer shall take measures to ensure that signal transmission is possible even if other users are
working in the same band.
The manufacturer shall provide a documentation which shows in which band his system is appending
including his used frequencies.
The test shall be carried out in accordance with 5.3.5.
4.3.6 Loss of communication
The loss of the ability of the system to transmit a message of any RF linked component to the CIE shall be
recognized within 300 s and after this it shall be indicated within 100 s.
The test shall be carried out in accordance with 5.3.6.
4.3.7 Antenna
The antenna or its cable shall only be detachable by opening the enclosure of the component or by using
special tools provided by the manufacturer.
The test shall be carried out in accordance with 5.3.7.
4.3.8 Power supply equipment
4.3.8.1 General
The component shall be powered by:
a) an autonomous power source, e.g. a primary battery; or
b) a power supply equipment in accordance with EN 54-4.
NOTE In accordance with EN 54–2 a CIE is powered with power supply equipment complying with EN 54–4, i.e. a
component powered from the CIE (e.g. over a field bus) falls under point b).
Components that rely on an autonomous power source (a) for correct operation are subject to the
requirements defined in Subclauses 4.3.8.2 to 4.3.8.6.
Components that are powered by a supply equipment in accordance with EN 54-4 (b) are subject to the
requirement defined in 4.3.8.5.
4.3.8.2 Enclosure
The autonomous power source shall be within the enclosure of the component.
4.3.8.3 Minimal service life
The autonomous power source(s) shall allow normal operation of the component for a minimum period of
36 months in quiescent condition.
4.3.8.4 Low power condition fault signal
The component powered by an autonomous power source(s) shall transmit a fault signal (low power) before
the component fails to operate correctly. This signal shall be accessible to service personnel.
After generation of this signal the component shall be capable to operate correctly in the quiescent state for at
least 30 d. After these 30 d, input components shall be able to detect and keep an alarm condition for at least
30 min. Output components shall be able to activate and keep activations for at least 30 min.
4.3.8.5 Fault signal after component failure
The loss of the power source shall be indicated as a fault signal.
4.3.8.6 Polarity reversal
The components using radio links shall either be designed to make polarity reversal impossible or, if not, the
polarity of the connections of the power source shall be identifiable and the polarity reversal shall not damage
the component.
4.4 Performance parameters under fire conditions
All components using radio links shall meet the requirements of the relevant part of EN 54, and the relevant
additional requirements from this present document.
4.5 Tolerance to supply voltage — Variation in supply parameters
To demonstrate that within the specified range(s) of the supply parameters (e.g. voltage), the transmission
behaviour is not unduly dependent on these parameters.
4.6 Durability of performance p
...