OSIST prEN 54-21:2004
(Main)Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
This European Standard specifies requirements, test methods and performance criteria against which the effectiveness and reliability of routing equipment capable of transmitting fire alarm and/or fault warning signals for use with fire detection and fire alarm systems installed in buildings can be assessed (see EN 54-1:1996).
Brandmeldeanlagen - Teil 21: Übertragungseinrichtungen für Brand- und Störungsmeldungen
Diese Europäische Norm legt Anforderungen, Prüfverfahren und Leistungsmerkmale fest, hinsichtlich derer die Wirksamkeit und Zuverlässigkeit von Übertragungseinrichtungen für Brandmelde- und/oder Störungssignale zur Verwendung in Brandmeldeanlagen in Gebäuden bewertet werden können (siehe EN 54 1:1996).
Systemes de détection et d'alarme incendie - Parte 21: Equipement de transmission d'alarme et de dérangement
La présente Norme européenne spécifie les exigences, les méthodes d'essai et les criteres de performance par rapport auxquels peuvent etre évaluées l'efficacité et la fiabilité de l'équipement de transmission capable de transmettre les signaux d'alarme incendie et/ou de dérangement a utiliser dans les systemes de détection et d'alarme incendie installés dans des bâtiments (voir l'EN 54-1:1996).
Sistemi za odkrivanje in javljanje požara ter alarmiranje – 21. del: Oprema za usmerjanje alarma in opozoril o napakah
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
OSIST prEN 54-21:2004
01-december-2004
Sistemi za odkrivanje in javljanje požara ter alarmiranje – 21. del: Oprema za
usmerjanje alarma in opozoril o napakah
Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning
routing equipment
Brandmeldeanlagen - Teil 21: Übertragungseinrichtungen für Brand- und
Störungsmeldungen
Systemes de détection et d'alarme incendie - Parte 21: Equipement de transmission
d'alarme et de dérangement
Ta slovenski standard je istoveten z: prEN 54-21
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
OSIST prEN 54-21:2004 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
OSIST prEN 54-21:2004
---------------------- Page: 2 ----------------------
OSIST prEN 54-21:2004
EUROPEAN STANDARD
DRAFT
prEN 54-21
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2004
ICS
English version
Fire detection and fire alarm systems - Part 21: Alarm
transmission and fault warning routing equipment
Brandmeldeanlagen - Teil 21: Alarm- und
Störungsübertragungseinrichtungen
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 Management Centre 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.
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
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 54-21:2004: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
Contents Page
Foreword. 3
1 Scope. 4
2 Normative references . 4
3 Terms and definitions. 5
4 General requirements. 5
5 Functional requirements . 5
6 Alarm transmission and fault warning systems requirements . 6
7 Design requirements . 6
8 Marking . 8
9 Power supply. 9
10 Test requirements . 9
Annex A (normative) Performance requirements for alarm and fault warning
transmission systems . 19
Annex B (normative) Verification of performance requirements for alarm and fault
warning transmission systems . 20
B.1 General. 20
B.1.1 Transmission time . 20
B.1.2 Reporting time. 20
B.1.3 Availability . 20
Annex ZA (informative) Clauses addressing the provisions of the EU Construction
Products Directive 89/106/EEC. 22
ZA.1 Scope and relevant clauses. 22
ZA.2 Procedures for the attestation of conformity of alarm transmission and fault
warning routing routing equipment covered by this standard . 23
ZA.2.1 System of attestation of conformity. 23
ZA.2.2 Evaluation of conformity. 24
ZA.3 CE marking and labelling and accompanying documentation . 28
ZA.4 EC certificate and declaration of conformity . 29
Bibliography . 31
2
---------------------- Page: 4 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
Foreword
This document (prEN 54-21:2004) 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 CEN Enquiry.
For products which have complied with the relevant national standard before the date of withdrawal
(dow), as shown by the manufacturer or by a certification body, this previous standard may continue
to apply for production until [dow + 36 months].
This document 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
document.
3
---------------------- Page: 5 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
1 Scope
This European Standard specifies requirements, test methods and performance criteria against which
the effectiveness and reliability of routing equipment capable of transmitting fire alarm and/or fault
warning signals for use with fire detection and fire alarm systems installed in buildings can be
assessed (see EN 54-1:1996).
2 Normative references
The following referenced documents are indispensable for the application of this document. 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 54-2:1997, Fire detection and fire alarm systems — Part 2: Control and indicating equipment.
EN 54-4:1997 + Corr: 1999, Fire detection and fire alarm systems — Part 4: Power supply equipment.
EN 50130-4:1995 + A1: 1998, Alarm systems — Part 4: Electromagnetic compatibility — Product family
standard: Immunity requirements for components of fire, intruder and social alarm systems.
EN 50136-1-1:1998 + A1: 2001, Alarm systems — Alarm transmission systems and equipment —
Part 1-1: General requirements for alarm transmission systems.
EN 50136-1-2, Alarm systems — Alarm transmission systems and equipment — Part 1-2:
Requirements for systems using dedicated alarm paths.
EN 50136-1-3, Alarm systems — Alarm transmission systems and equipment — Part 1-3:
Requirements for systems with digital communicators using the public switched telephone network.
EN 50136-2-1:1998, Alarm systems — Alarm transmission systems and equipment — Part 2-1:
General requirements for alarm transmission equipment.
EN 60068-1:1994, Environmental testing — Part 1: General and guidance.
EN 60068-2-1:1993 +A1: 1993 + A2: 1994, Environmental testing — Part 2: Tests — Tests A: Cold.
EN 60068-2-6:1995, Environmental testing — Part 2: Tests — Test Fc: Vibration (sinusoidal).
EN 60068-2-47:1999, Environmental testing — Part 2-47: Test methods — Mounting of components,
equipment and other articles for vibration, impact and similar dynamic tests.
EN 60068-2-75:1997, Environmental testing — Part 2-75: Tests — Test Eh: Hammer tests.
EN 60068-2-78:2001, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady
state.
EN 60529:1991 + Corr: 1993, Degrees of protection provided by enclosures (IP code).
EN 60721-3-3:1995, Classification of environmental conditions — Part 3: Classification of groups of
environmental parameters and their severities — Section 3: Stationary use at weatherprotected
locations.
4
---------------------- Page: 6 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 54-1:1996, EN 54-
2, EN 54-4 and EN 50136-1-1:1998 + A1: 2001, 4.7 apply.
4 General requirements
4.1 General
If an optional function with requirements is included, all the corresponding requirements shall be met.
If functions other than those specified in this European Standard are provided, they shall not
jeopardize the compliance with any requirements of this European Standard.
4.2 Compliance
In order to comply with this standard the routing equipment shall meet the requirements of this clause,
which shall be verified by visual inspection or engineering assessment, shall be tested as described in
clause 5 and shall meet the requirements of the tests.
5 Functional requirements
The routing equipment shall be capable of transmitting and/or receiving and processing at least the
following signals, as specified in Table 1.
Table 1 — Mandatory signals for routing equipment
Alarm transmission routing Fault warning routing equipment
equipment (E) (J)
CIE to routing equipment Fire alarm Fault warning
Routing equipment to CIE Fault warning (power supply) Fault warning (network, power
supply)
Network to routing equipment Fault warning (network) Fault warning (network)
Routing equipment to network Fire alarm Fault warning (CIE power supply)
Network to routing equipment Acknowledgement
Routing equipment to CIE Acknowledgement
The following shall be indicated either at the CIE or the routing equipment by separate light-emitting
indicators for A and B:
• A) the received acknowledgement as defined in EN 50136 2-1:1998, 5.5.
• B) the following fault warnings common:
B.1) the missing of acknowledgement (which means missing for longer than 100 s after the
start of the alarm transmission according to EN 54-2: 1997, 7.9) from the alarm
transmission network as a fault warning;
5
---------------------- Page: 7 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
B.2) a fault warning indicating a failure within the routing equipment (e.g. power supply failure),
required to be indicated in accordance with this standard;
B.3) a fault warning indicating a failure within the used alarm transmission network.
6 Alarm transmission and fault warning systems requirements
The performance requirements of transmission system shall be as specified in Annex A.
The verification of this performance is detailed in Annex B.
7 Design requirements
7.1 General requirements and manufacturer's declarations
The routing equipment shall comply with the design requirements of 7.3 relevant to the technology
used. Some requirements can be verified by testing. Others (e.g. long-term reliability of the routing
equipment) can only be verified by inspection of the design and its accompanying documentation
(product or system specification, reports ec.)
In order to assist the process of design inspection, the manufacturer shall declare the following in
writing:
a) that the design has been carried out in accordance with a quality management system, which
incorporates a set of rules for the design of all elements of the routing equipment;
b) that all the components of the routing equipment have been selected for the intended purpose
and are expected to operate within their specification when the environmental conditions outside
the enclosure of the routing equipment comply with class 3K5 of EN 60721-3-3:1995.
7.2 Documentation
7.2.1 The manufacturer shall prepare installation and user documentation, which shall be submitted
to the testing authority together with the routing equipment. This shall comprise at least the following.
a) A general description of the equipment, including:
optional functions with requirements of this European Standard;
functions relating to other parts of EN 54;
ancillary functions not required by this European Standard.
b) Technical specifications of the inputs and the outputs of the routing equipment, sufficient to
permit an assessment of the mechanical, electrical and software compatibility with other
components of the system (as described in EN 54-1), including where relevant:
the power requirements for recommended operation;
the maximum and minimum electrical ratings for each input and output;
information on the communication parameters employed on each transmission path;
recommended cable parameters for each transmission path;
6
---------------------- Page: 8 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
fuse ratings.
c) Installation information, including:
the suitability for use in the various environments specified in accordance with Annex A
(e.g. the supplier specifies the performance parameters of the routing equipment in a
data sheet, and it is these parameters together with the different parameters of the
alarm transmission system have to fulfil the requirements of Annex A)
mounting instructions;
instructions for connecting the inputs and outputs.
d) Configuring and commissioning instructions.
e) Operating instructions.
f) Maintenance information.
7.2.2 The manufacturer shall also prepare design documentation, which shall be submitted to the
testing authority together with the routing equipment. This documentation shall include drawings, parts
lists, block diagrams, circuit diagrams and a functional description to such an extent that compliance
with EN 54-21 may be checked and that a general assessment of the mechanical and electrical
design is made possible.
7.3 Mechanical design requirements
7.3.1 The enclosure of the routing equipment shall be of robust construction, consistent with the
method of installation recommended in the documentation. It shall meet at least classification IP30 of
EN 60529:1991 + Corr. May 1993 at access level 2.
7.3.2 All light emitting indicators shall be clearly labelled to indicate their purpose. The information
shall be legible at 0,8 m distance in an ambient light intensity from 100 lux to 500 lux.
7.3.3 The terminals for transmission paths and the fuses shall be clearly labelled.
7.4 Electrical and other design requirements
7.4.1 The processing of signals shall give the highest priority to the transmission of fire alarms (E of
EN 54-1) or fault warning (J of EN 54-1).
7.4.2 The availability of the power supply for the routing equipment shall be as a minimum on the
same level as the availability of the power supply for the CIE required by EN 54-4.
7.4.3 The loss of power has to be indicated at least on the CIE.
7.4.4 Transitions between the main and the stand-by power sources shall not change any
indications and/or the state of any outputs, except those relating to the power supplies.
7.4.5 If the routing equipment has provision for disconnecting or adjusting the main or the stand-by
power source, this shall only be possible at access level 3 or 4.
7.5 Integrity of transmission paths
7.5.1 A fault in any transmission path between the routing equipment and the alarm transmission
system (as defined in EN 50136 1-1) shall not affect the correct functioning of the routing equipment
or any other transmission path.
7
---------------------- Page: 9 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
7.5.2 If the routing equipment is designed to be used with a power supply (L of EN 54-1) contained
in a seperate enclosure, then an interface shall be provided for at least two transmission paths to the
power supply, so that a short circuit or an interruption in one does not prevent the supply of power to
the routing equipment.
7.6 Accessibility of indications and controls (see EN 54-2:1997, Annex A)
Access levels shall be provided on the routing equipment, from access level 1 (most accessible) to
access level 4 (least accessible). Manual controls and other functions shall be grouped on the
appropriate access level, as specified in EN 54-2, 12.6.
7.7 Indications by means of light-emitting indicators
7.7.1 Mandatory indications from light-emitting indicators shall be visible in an ambient light
intensity up to 500 lx, at any angle up to 22,5 from a line through the indicator perpendicular to its
mounting surface:
at 3 m distance: the indication of the supply of power;
at 0,8 m distance: other indications.
7.7.2 If flashing indications are used, the on- and/or the off-periods shall be not less than 0,25 s,
and the frequencies of flash shall be not less than:
1 Hz for fire alarm indications;
0,2 Hz for fault indications.
7.7.3 If the same light-emitting indicators are used for the indication of faults and disablements,
fault indications shall be flashing and disablement indications shall be steady.
7.8 Colours of indications
The colours of the general and specific indications from light-emitting indicators shall be yellow for
indications of fault warnings and red for the indication of the acknowledgement.
7.9 Testing of indicators
All mandatory visible indicators at the routing equipment shall be testable by manual operation at
access level 1 or 2.
7.10 Additional design requirements for software-controlled routing equipment
If the routing equipment contains elements that are controlled by software in order to fulfil the
mandatory requirements of this European Standard, these elements of the routing equipment shall
comply with the requirements of the relevant clauses of EN 54-2, clause 13 and Annex J.
8 Marking
The routing equipment shall be marked with the following information, which shall be legible at access
level 1.
a) The number of this part of the standard (EN 54-21).
b) The name or trade mark of the manufacturer or supplier.
8
---------------------- Page: 10 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
c) The model designation (type or number).
It shall be possible to identify the code or number that identifies the production period of the routing
equipment at access level 2 or 3.
9 Power supply
The routing equipment shall be powered by the fire alarm system power supply (L of EN 54-1 as
specified by EN 54-4) or by a separate power supply (L of EN 54-1 as specified by EN 54-4).
10 Test requirements
10.1 General test requirements
10.1.1 Standard atmospheric conditions for testing
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 60068-1:1994 as follows:
o o
Temperature: 15 C– 35 C
Relative humidity: 25% – 75%
Air pressure: 86kPa –106kPa
The temperature and humidity shall be substantially constant for each environmental test where the
standard atmospheric conditions are applied.
10.1.2 Specimen configuration
The specimen configuration shall include the connection to the transmission path to the CIE and the
network as specified by the manufacturer.
10.1.3 Mounting and orientation
Unless otherwise stated in a test procedure, the specimen shall be mounted in its usual orientation by
the normal means of mounting indicated by the manufacturer, except where required for functional
testing the equipment shall be in the condition of access level 1.
10.1.4 Electrical connection
If the test procedure requires the specimen to be in the operating condition, it shall be connected to or
powered by a power supply according to EN 54-4.
Unless otherwise required, the power supply shall be in the nominal operating condition.
All transmission paths shall be connected to cables and equipment or to dummy loads. Equipment
other than the routing equipment may be kept in the standard atmospheric conditions during the tests.
9
---------------------- Page: 11 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
10.2 Functional test
10.2.1 The object of the test
The object of the functional test is to demonstrate the operation of the equipment before, during
and/or after the environmental conditioning.
10.2.2 Test schedule
A test schedule shall be drawn up which ensures that during the functional test each type of input
function and each type of output function is exercised.
If the routing equipment has the functionality of transmitting alarm signals then the following tests shall
be carried out:
Test 1
Initiate and reset a fire alarm signal via a control panel (CIE) or other means.
Check if the fire alarm signal is sent to the network.
Initiate an acknowledgement signal within 100 s.
Check, if the correct indication is given.
Test 2
Initiate and reset a fire alarm signal via a control panel (CIE) or other means.
Check if the fire alarm signal is sent to the network.
Initiate an acknowledgement signal after 100 s.
Check, if the correct indication is given.
Test 3
Short-circuit the network.
Check, if the correct indication is given.
Test 4
Disconnect the network.
Check, if the correct indication is given.
If the routing equipment has the functionality of transmitting fault-warning signals then the following
test shall be carried out:
Test 5
Initiate and reset a fault-warning signal to the fault warning routing equipment via a control panel
(CIE) or other means.
10
---------------------- Page: 12 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
Check, if the fault-warning signal is sent to the network and, if provided, its correct indication.
10.3 Environmental tests
10.3.1 General
More than one specimen may be supplied for environmental testing.
The tests to be applied are shown in Table 2.
Table 2 — Environmental tests
Test Operational or endurance Clause number
Cold Operational 10.4
Damp heat, steady state Operational 10.5
Impact Operational 10.6
Vibration, sinusoidal Operational 10.7
Electromagnetic compatibility (EMC) immunity tests Operational 10.8
Supply voltage variations Operational 10.9
Damp heat, steady state Endurance 10.10
Vibration, sinusoidal Endurance 10.11
10.3.2 Tests for one specimen
If a single specimen is supplied for environmental testing, the specimen shall be subjected to all of the
tests.
NOTE 1 These may be carried out in any order.
A functional test shall be carried out before and after each environmental test.
NOTE 2 The functional test after one environmental test may be taken as the functional test before the next
environmental test.
10.3.3 Tests for more than one specimen
A functional test shall be carried out before and after each environmental test.
If more than one specimen is supplied for environmental testing, the tests may be divided between the
specimens and carried out in any order.
For each specimen, the functional test after one environmental test may be taken as the functional test before the
next environmental test.
10.3.4 Requirements
During the tests of 10.4 to 10.11 the specimen shall not change status in each of the functional
conditions as specified in the corresponding clauses, except when such a change is required by the
test procedure or when the change is a result of a functional test.
Any mechanical damage to the specimen, observed following the tests of 10.4, 10.5, 10.6, 10.7, 10.10
and 10.11, shall not jeopardize any mandatory function of this European Standard.
When subjected to the functional test each specimen shall respond correctly (see 10.2).
11
---------------------- Page: 13 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
10.4 Cold (operational)
10.4.1 Object of the test
The object of the test is to demonstrate the ability of the specimen to function correctly at low ambient
temperatures appropriate to the anticipated service environment.
10.4.2 Test procedure
10.4.2.1 General
The test procedures with gradual changes in temperature described in EN 60068-2-1:1993 + A1:
1993 + A2: 1994 shall be used. Test Ad shall be used for heat-dissipating specimens (as defined in
EN 60068-2-1:1993 + A1: 1993 + A2: 1994) and test Ab shall be used for non heat-dissipating
specimens.
10.4.2.2 Initial examination
Before conditioning, subject the specimen to the functional test.
10.4.2.3 State of the specimen during conditioning
Mount the specimen as specified in 10.1.3 and connect it to suitable power supply, monitoring and
loading equipment (see 10.1.4).
The specimen shall be in the quiescent condition.
10.4.2.4 Conditioning
Apply the following severity of conditioning:
Temperature: (-5 ± 3) ºC;
Duration: 16 h.
10.4.2.5 Measurements during conditioning
Monitor the specimen during the conditioning period to detect any change in status. During the last
hour of the conditioning period, subject the specimen to the functional test.
10.4.2.6 Final measurements
After the recovery period, subject the specimen to the functional test and inspect it visually for
mechanical damage both externally and internally.
10.5 Damp heat, steady state (operational)
10.5.1 Object of the test
The object of the test is to demonstrate the ability of the specimen to function correctly at high relative
humidity (without condensation), which may occur for short periods in the service environment.
12
---------------------- Page: 14 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
10.5.2 Test procedure
10.5.2.1 General
Use the test procedure described in IEC 60068-2-56:1988
10.5.2.2 Initial examination
Before conditioning, subject the specimen to the functional test.
10.5.2.3 State of the specimen during conditioning
Mount the specimen as specified in 10.1.3 and connect it to suitable power supply, monitoring and
loading equipment (see 10.1.4).
The specimen shall be in the quiescent condition.
10.5.2.4 Conditioning
Apply the following severity of conditioning:
temperature: (40 ± 2) ºC;
+2
relative humidity: (93 ) %;
−3
duration: 4 days.
Pre-condition the specimen at the conditioning temperature (40 ±2) ºC until temperature stability has
been reached, to prevent the formation of water droplets on the specimen.
10.5.2.5 Measurements during conditioning
Monitor the specimen during the conditioning period to detect any change in status. During the last
hour of the conditioning period, subject the specimen to the functional test.
10.5.2.6 Final measurements
After the recovery period, subject the specimen to the functional test and inspect it visually for
mechanical damage both externally and internally.
10.6 Impact (operational)
10.6.1 Object of the test
The object of the test is to demonstrate the immunity of the equipment to mechanical impacts upon
the surface, which it may sustain in the normal service environment and which it can reasonably be
expected to withstand.
10.6.2 Test procedure
10.6.2.1 General
Apply the test apparatus and procedure described in EN 60068-2-75: 1997, test Ehb.
13
---------------------- Page: 15 ----------------------
OSIST prEN 54-21:2004
prEN 54-21:2004 (E)
10.6.2.2 Initial examination
Before conditioning, subject the specimen to the functional test.
10.6.2.3 State of the specimen during conditioning
Mount the specimen as specified in 10.1.3 and connect it to a suitable power supply, monitoring and
loading equipment (see 10.1.4).
The specimen shall be in the quiescent condition.
10.6.2.4 Conditioning
Apply impacts to all surfac
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.