EN IEC 62282-4-202:2023

SLOVENSKI STANDARD
01-februar-2024
Tehnologije gorivnih celic - 4-202. del: Elektroenergetski sistemi z gorivnimi
celicami za pogonske in pomožnne elektroenergetske enote - Letala brez posadke
- Metode za preskušanje zmogljivosti (IEC 62282-4-202:2023)
Fuel cell technologies - Part 4-202: Fuel cell power systems for propulsion and auxiliary
power units - Unmanned aircrafts - Performance test methods (IEC 62282-4-202:2023)
Brennstoffzellentechnologien - Teil 4-202: Brennstoffzellen-Energiesysteme für Antriebs-
und Hilfsaggregate - Unbemannte Luftfahrzeugsysteme - Leistungsprüfverfahren (IEC
62282-4-202:2023)
Technologies des piles à combustibles - Partie 4-202: Systèmes à piles à combustible
pour les groupes auxiliaires de puissance et de propulsion – Aéronefs sans pilote –
Méthodes d'essai des performances (IEC 62282-4-202:2023)
Ta slovenski standard je istoveten z: EN IEC 62282-4-202:2023
ICS:
27.070 Gorilne celice Fuel cells
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62282-4-202

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2023
ICS 27.070; 49.020
English Version
Fuel cell technologies - Part 4-202: Fuel cell power systems for
propulsion and auxiliary power units - Unmanned aircrafts -
Performance test methods
(IEC 62282-4-202:2023)
Technologies des piles à combustibles - Partie 4-202: Brennstoffzellentechnologien - Teil 4-202: Brennstoffzellen-
Systèmes à piles à combustible pour les groupes auxiliaires Energiesysteme für Antriebs- und Hilfsaggregate -
de puissance et de propulsion - Aéronefs sans pilote - Unbemannte Luftfahrzeugsysteme - Leistungsprüfverfahren
Méthodes d'essai des performances (IEC 62282-4-202:2023)
(IEC 62282-4-202:2023)
This European Standard was approved by CENELEC on 2023-11-21. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62282-4-202:2023 E

European foreword
The text of document 105/998/FDIS, future edition 1 of IEC 62282-4-202, prepared by IEC/TC 105
"Fuel cell technologies" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC
as EN IEC 62282-4-202:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-08-21
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-11-21
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62282-4-202:2023 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 62282-3-200:2015 NOTE Approved as EN 62282-3-200:2016 (not modified)
IEC 62282-3-201:2017 NOTE Approved as EN 62282-3-201:2017 (not modified)
IEC 62282-4-102:2022 NOTE Approved as EN IEC 62282-4-102:2023 (not modified)
IEC 62282-6-200:2016 NOTE Approved as EN 62282-6-200:2017 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-485 - International Electrotechnical Vocabulary - -
(IEV) - Part 485: Fuel cell technologies
IEC 60529 - Degrees of protection provided by EN 60529 -
enclosures (IP Code)
IEC 62282-4-202 ®
Edition 1.0 2023-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fuel cell technologies –
Part 4-202: Fuel cell power systems for propulsion and auxiliary power units –

Unmanned aircrafts – Performance test methods

Technologies des piles à combustibles –

Partie 4-202: Systèmes à piles à combustible pour les groupes auxiliaires de

puissance et de propulsion – Aéronefs sans pilote – Méthodes d'essai des

performances
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.070, 49.020 ISBN 978-2-8322-7587-0

– 2 – IEC 62282-4-202:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Fuel cell power system requirements for UAs . 9
4.1 System configuration . 9
4.2 Appearance and structure . 10
4.3 General technical requirements. 10
5 Test preparation . 11
5.1 General . 11
5.2 Test environment . 11
5.3 Test equipment and accuracy . 11
6 Test methods . 12
6.1 Start-up time . 12
6.2 Time to achieve rated power output . 12
6.3 Rated power output . 12
6.4 Continuous running duration . 12
6.5 Peak power output . 12
6.6 Output voltage range . 13
6.7 Electric efficiency . 13
6.8 Start-up and shutdown methods . 13
6.9 Shutdown time . 13
6.10 Acoustic noise level . 14
6.11 Data transmission . 14
6.12 Enclosure H concentration . 15
6.13 H concentration in fuel exhaust . 15
6.14 Enclosure IP code . 15
6.15 H leakage rate . 15
6.16 Warning and monitoring . 16
Annex A (informative) Suggested aging test procedure for a fuel cell power system
for a UA . 17
Annex B (informative) Guidelines for test reports . 18
B.1 General . 18
B.2 Title page . 18
B.3 Table of contents . 18
B.4 Summary report . 18
B.5 Detailed report . 19
B.6 Full report . 19
Bibliography . 20

Figure 1 – General configuration of a fuel cell power system for UAs . 10
Figure 2 – Acoustic noise measurement points for fuel cell power system . 14

IEC 62282-4-202:2023 © IEC 2023 – 3 –
Table 1 – Test equipment and accuracy . 11
Table 2 – Acoustic noise level correction . 14
Table A.1 – Suggested aging test procedure for a fuel cell power system for a UA . 17

– 4 – IEC 62282-4-202:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FUEL CELL TECHNOLOGIES –
Part 4-202: Fuel cell power systems for propulsion and auxiliary
power units – Unmanned aircrafts – Performance test methods

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 62282-4-202 has been prepared by IEC technical committee 105: Fuel cell technologies. It
is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
105/998/FDIS 105/1009/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

IEC 62282-4-202:2023 © IEC 2023 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62282 series, published under the general title Fuel cell technologies,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 62282-4-202:2023 © IEC 2023
INTRODUCTION
This part of IEC 62282-4 provides consistent and repeatable test methods for the electrical,
thermal and environmental performance of fuel cell power systems for unmanned aircrafts.
The IEC 62282-4 series deals with the safety, performance, and interchangeability of fuel cell
power systems for propulsion for categories of vehicles other than road vehicles and for
auxiliary power units (APUs). Among the categories covered by the IEC 62282-4 series, this
document focuses on fuel cell power systems for unmanned aircrafts because there is an urgent
demand for such an application in the world.
This part of IEC 62282-4 describes type tests and their test methods only. No routine tests are
required or identified, and no performance targets are set in this document.
The purpose of this document is to evaluate the fuel cell system in the various combinations of
fuel cell and unmanned aircrafts. This document provides a framework for designing and
evaluating a fuel cell system for use specifically in an unmanned aircraft.
This part of IEC 62282-4 can be used by manufacturers of fuel cell power systems used for
unmanned aircrafts or those who evaluate the performance of their systems for certification
purposes.
Users of this document selectively execute test items that are suitable for their purposes from
those described in this document. This document is not intended to exclude any other methods.

IEC 62282-4-202:2023 © IEC 2023 – 7 –
FUEL CELL TECHNOLOGIES –
Part 4-202: Fuel cell power systems for propulsion and auxiliary
power units – Unmanned aircrafts – Performance test methods

1 Scope
This part of IEC 62282 covers performance test methods of fuel cell power systems intended
to be used to power unmanned aircrafts, including general requirements, start-up, shutdown,
power output, continuous running time, electric efficiency, data transmission, warning and
monitoring, environmental compatibility, etc.
The scope of this document is limited to electrically powered unmanned aircrafts with a
maximum take-off mass not exceeding 150 kg (i.e. level 5 or lower unmanned aircrafts (UAs)).
This document applies to fuel cell power systems with a rated output voltage not exceeding
220 V DC for outdoor use.
This document applies only to compressed gaseous hydrogen-fuelled fuel cell power systems.
This document does not apply to reformer-equipped fuel cell power systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
IEC 60050-485, International Electrotechnical Vocabulary (IEV) – Part 485: Fuel cell
technologies, available at http://www.electropedia.org
IEC 60529, Degrees of protection provided by enclosures (IP Code)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-485 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp

– 8 – IEC 62282-4-202:2023 © IEC 2023
3.1
unmanned aircraft
unmanned aerial vehicle
remotely-piloted aircraft
UA
UAV
RPA
aircraft without a human pilot aboard with its flight being controlled either autonomously by
onboard control systems or by the remote control of a pilot on the ground
[SOURCE: ISO 21384-4:2020, 3.67 and 3.79, modified – The terms are listed under a single
entry as equivalent terms and the definition has been adapted for the purposes of this document
and to add clarity.]
3.2
fuel cell power system for UA
fuel cell power system onboard a UA that provides electric power for propulsion and non-
propulsion needs of the UA during its flight
3.3
start-up time
time duration from the moment a signal is sent out or an action is taken to start up the fuel cell
power system to the moment the fuel cell power system is able to provide net electric power
output
[SOURCE: IEC 60050-485:2020, 485-20-05, modified – The definition has been adapted for the
purposes of this document and to add clarity.]
3.4
shutdown time
time duration from the moment a signal is sent out or an action is taken to shut down the fuel
cell power system to the moment the fuel cell power system shuts down completely
[SOURCE: IEC 60050-485:2020, 485-20-04, modified – The definition has been adapted for the
purposes of this document and to add clarity.]
3.5
rated power output
maximum continuous DC power output of the fuel cell power system when operated under
normal conditions specified by the fuel cell power system manufacturer
Note 1 to entry: A continuous running duration of the fuel cell power system at rated power output can be agreed
upon by the related parties.
3.6
peak power output
maximum DC power output of the fuel cell power system that can last for a short time
Note 1 to entry: It is recommended that the time duration be more than 2 min.
Note 2 to entry: The time duration can also be agreed upon by the related parties based on actual situations.

IEC 62282-4-202:2023 © IEC 2023 – 9 –
3.7
output voltage range
under the normal operational conditions specified by the fuel cell power system manufacturer,
range from the lowest output voltage to the highest output voltage of the fuel cell power system
in the entire process from start-up, to operation, to shutdown
Note 1 to entry: It is important that the DC output voltage of the fuel cell power system is always within the input
voltage range of the DC/DC or DC/AC converter or the electronic speed controller (ESC) used on the UA by the UA
manufacturer.
3.8
continuous running duration
under the normal operational conditions specified by the fuel cell power system manufacturer,
time duration the fuel cell power system can last at the rated power output with its output voltage
within the output voltage range described in 3.7
Note 1 to entry: The DC/DC or DC/AC converter or the electronic speed controller used on the UA can either be
...