EN 17127:2024

SLOVENSKI STANDARD
01-maj-2024
Nadomešča:
SIST EN 17127:2021
Zunanje polnilne postaje za plinasti vodik in postopki polnjenja
Outdoor hydrogen refuelling points dispensing gaseous hydrogen and incorporating
filling protocols
Gasförmiger Wasserstoff - Betankungsanlagen - Teil 1: Allgemeine Anforderungen
Points de ravitaillement en hydrogène en extérieur distribuant de l'hydrogène gazeux et
intégrant des protocoles de remplissage
Ta slovenski standard je istoveten z: EN 17127:2024
ICS:
27.075 Tehnologija vodika Hydrogen technologies
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17127
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2024
EUROPÄISCHE NORM
ICS 27.075; 75.200 Supersedes EN 17127:2020
English Version
Outdoor hydrogen refuelling points dispensing gaseous
hydrogen and incorporating filling protocols
Points de ravitaillement en hydrogène en extérieur Gasförmiger Wasserstoff - Betankungsanlagen - Teil 1:
distribuant de l'hydrogène gazeux et intégrant des Allgemeine Anforderungen
protocoles de remplissage
This European Standard was approved by CEN on 17 December 2023.

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 CEN-CENELEC Management Centre 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17127:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Abbreviated terms . 9
5 Characteristics and properties of hydrogen refuelling points . 9
5.1 General requirements . 9
5.2 Fuel Quality .10
5.3 Dispenser process control .10
5.3.1 General requirements for the fuelling protocol.10
5.3.2 Fuelling protocol process limits for vehicle dispensing systems .11
5.3.3 Vehicle to station communications .12
5.3.4 Dispenser Pressure Control Faults and over-pressure protection .13
5.3.5 Dispenser temperature control faults .13
6 Inspection and validation of hydrogen refuelling points .14
6.1 Inspection prior putting into service and periodical inspection .14
6.2 Minimum Site Acceptance Testing to ensure interoperability .14
Annex A (informative) Anticipated minimum vehicle characteristics .16
Annex B (informative) Countermeasures for unsuitable hydrogen fuelling protocols .18
B.1 General .18
B.2 Countermeasure examples .18
Bibliography .19

European foreword
This document (EN 17127:2024) has been prepared by Technical Committee CEN/TC 268 “Cryogenic
vessels and specific hydrogen technologies applications”, the secretariat of which is held by AFNOR.
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 August 2024, and conflicting national standards shall be
withdrawn at the latest by August 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 17127:2020.
The main changes compared to the previous edition are listed below:
— Improvement of the definitions;
— The general requirements of the characteristics and properties of hydrogen refuelling points have
been extended for higher flow rates needed for the refuelling of Heavy Duty Road vehicles;
— Communication is considered to improve the level of safety.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
The European Commission in its standardization requests M/533 of March 12th, 2015 and M/581 of
th
March 24 , 2022, aims to ensure that technical specifications for interoperability of refuelling points are
specified in European Standards compatible with the relevant International Standards. These
specifications aim to meet the European needs, be compatible and aligned as much as possible with
relevant International Standards and as far as possible with existing refuelling infrastructure already in
place and leave room to accommodate the adopted standard to local technical, analytical and regulatory
needs. The requested European Standards aim to be technologically and commercially neutral and based
on the know-how currently in the possession of the EU industry and of the public sector on a fair,
reasonable and non-discriminatory basis.
According to the legal requirements given in the Directive 2014/94/EU and the future EU Regulation
repealing the Directive 2014/94/EU (AFIR) and M/533 and M/581, European Standards specifying only
the required specifications for ensuring the interoperability of refuelling points should be provided.
European standards and common requirements with respect to “interoperability” mean the capability of
an infrastructure to supply energy (in this document, hydrogen) that is compatible with all vehicle
technologies and allows seamless EU-wide mobility and a clear definition of fuel pressure and
temperature levels and connector designs.
The European Standardization Organizations (ESOs) should adopt European Standards in accordance
with Article 10 of Regulation (EU) No 1025/2012 of the European Parliament and of the Council, and
those standards should be based on current International Standards or ongoing international
standardization work, where applicable.
Direction from the standardization request M/533 for European Standards for hydrogen supply are to
develop European Standards containing technical solutions for interoperability with technical
specifications in regard to Article 5 and point 2 of Annex II, in particular for:
a) outdoor hydrogen refuelling points dispensing gaseous hydrogen;
b) hydrogen purity dispensed by hydrogen refuelling points;
c) fuelling algorithms and equipment of hydrogen refuelling points;
d) connectors for vehicles for the refuelling of gaseous hydrogen.
This document specifies Items a) and c).
Item b) is covered by EN 17124 and Item d) by EN ISO 17268.
This document also addresses the standardization request M/581 for a European standard supporting
an interoperable infrastructure for hydrogen supply for road transport and containing technical
specifications with a unified solution for hydrogen refuelling points dispensing compressed (gaseous)
hydrogen for heavy duty vehicles.
1 Scope
This document defines the minimum requirements to ensure the interoperability of hydrogen refuelling
points, including refuelling protocols that dispense gaseous hydrogen to road vehicles (e.g. Fuel Cell
Electric Vehicles) that comply with legislation applicable to such vehicles.
The safety and performance requirements for the entire hydrogen fuelling station, addressed in
accordance with existing relevant European and national legislation, are not included in this document.
This document applies to hydrogen refuelling points dispensing gaseous hydrogen to vehicles compliant
with UN R134 (Regulation No. 134), Regulation (EC) No 79/2009.
NOTE Guidance on considerations for hydrogen fuelling stations is provided in ISO 19880-1:2020.
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.
EN 17124, Hydrogen fuel - Product specification and quality assurance for hydrogen refuelling points
dispensing gaseous hydrogen - Proton exchange membrane (PEM) fuel cell applications for vehicles
EN ISO 17268, Gaseous hydrogen land vehicle refuelling connection devices (ISO 17268)
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.1
compressed hydrogen storage system
CHSS
hydrogen storage on-board vehicle
Note 1 to entry As defined in the UN R134 (Regulation No. 134)
3.2
dispenser
equipment in the dispensing system, including the dispenser cabinet(s) and support structure, that is
physically located in the fuelling area
Note 1 to entry: The hydrogen dispenser typically includes, as a minimum, one or more fuelling assemblies
consisting of a nozzle, hose and break-away coupling, required temperature and pressure instrumentation, filters,
and the user interface to conduct vehicle fuelling.
Note 2 to entry: The manufacturer of the hydrogen dispenser can elect to include additional equipment in the
dispenser, including the possibility of all equipment in the dispensing system, such as compressor, pressure storage.
3.3
dispenser cabinet
protective housing that encloses process piping and can also enclose measurement, control and ancillary
dispenser equipment
3.4
dispenser fuel pressure
pressure of the hydrogen gas supplied to the vehicle by the refuelling point
Note 1 to entry: See Annex A for discussion of pressure terminology and its application to dispensing systems.
3.5
dispenser fuel temperature
temperature of the hydrogen gas supplied to the vehicle by the refuelling point
3.6
dispensing system
hydrogen refuelling point
system downstream of the hydrogen supply system comprising all equipment necessary to carry out the
vehicle refuelling operation, through which the compressed hydrogen is supplied to the vehicle
[SOURCE: ISO 19880-1:2020]
3.7
hydrogen fuelling station
facility for the dispensing of compressed hydrogen vehicle fuel, often referred to as a hydrogen refuelling
station (HRS) or hydrogen filling station, including the supply of hydrogen compression, storage and
dispensing systems
3.8
hydrogen service level
HSL
pressure level in MPa used
...