Gaseous hydrogen land vehicle refuelling connection devices (ISO 17268:2020)

EN-ISO 17268 defines the design, safety and operation characteristics of gaseous hydrogen land vehicle (GHLV) refuelling connectors.GHLV refuelling connectors consist of the following components, as applicable:- receptacle and protective cap (mounted on vehicle);- nozzle;- communication hardware.This document is applicable to refuelling connectors which have nominal working pressures or hydrogen service levels up to 70 MPa.This document is not applicable to refuelling connectors dispensing blends of hydrogen with natural gas.

Gasförmiger Wasserstoff - Anschlussvorrichtungen für die Betankung von Landfahrzeugen (ISO 17268:2020)

Dieses Dokument legt die Auslegung, die Sicherheit und die betrieblichen Eigenschaften von Anschlüssen zur Betankung von Landfahrzeugen, die mit gasförmigem Wasserstoff (GHLV; en: gaseous hydrogen land vehicle) betrieben werden, fest.
GHLV-Betankungsanschlüsse bestehen ggf. aus den folgenden Bauteilen:
- Empfängerstutzen und Schutzkappe (am Fahrzeug angebracht);
- Füllstutzen;
- Kommunikations-Hardware, falls zutreffend.
Dieses Dokument gilt für Betankungsanschlüsse mit Nennbetriebsdrücken oder Wasserstoffbetriebsstufen von bis zu 70 MPa
Betankungsanschlüsse zur Abgabe von Wasserstoff-Erdgas-Gemischen sind vom Anwendungsbereich dieses Dokuments ausgeschlossen.

Dispositifs de raccordement pour le ravitaillement des véhicules terrestres en hydrogène gazeux (ISO 17268:2020)

Le présent document définit les caractéristiques de conception, de sécurité et d'exploitation des connecteurs destinés au ravitaillement des véhicules terrestres à hydrogène gazeux (GHLV).
Les connecteurs de ravitaillement des GHLV sont constitués des éléments suivants, selon le cas:
— un réceptacle et un bouchon de protection (montés sur le véhicule);
— un pistolet;
— un module de communication.
Le présent document s'applique aux connecteurs de ravitaillement ayant une pression de service nominale ou un niveau de service d'hydrogène ne dépassant pas 70 MPa.
Le présent document ne s'applique pas aux connecteurs de ravitaillement servant à distribuer des mélanges d'hydrogène et de gaz naturel.

Priključne naprave za oskrbo kopenskih vozil s plinastim vodikom (ISO 17268:2020)

General Information

Status
Published
Public Enquiry End Date
09-Aug-2017
Publication Date
16-Apr-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-2020
Due Date
06-Jun-2020
Completion Date
17-Apr-2020

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SLOVENSKI STANDARD
SIST EN ISO 17268:2020
01-maj-2020
Nadomešča:
SIST EN ISO 17268:2017
Priključne naprave za oskrbo kopenskih vozil s plinastim vodikom (ISO
17268:2020)
Gaseous hydrogen land vehicle refuelling connection devices (ISO 17268:2020)
Gasförmiger Wasserstoff - Anschlussvorrichtungen für die Betankung von
Landfahrzeugen (ISO 17268:2020)

Dispositifs de raccordement pour le ravitaillement des véhicules terrestres en hydrogène

gazeux (ISO 17268:2020)
Ta slovenski standard je istoveten z: EN ISO 17268:2020
ICS:
43.180 Diagnostična, vdrževalna in Diagnostic, maintenance and
preskusna oprema test equipment
71.100.20 Industrijski plini Gases for industrial
application
SIST EN ISO 17268:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17268:2020
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SIST EN ISO 17268:2020
EN ISO 17268
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 43.180; 71.100.20 Supersedes EN ISO 17268:2016
English Version
Gaseous hydrogen land vehicle refuelling connection
devices (ISO 17268:2020)
Dispositifs de raccordement pour le ravitaillement des
véhicules terrestres en hydrogène gazeux (ISO
17268:2020)
This European Standard was approved by CEN on 24 January 2020.

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, Turkey 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17268:2020 E

worldwide for CEN national Members.
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SIST EN ISO 17268:2020
EN ISO 17268:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 17268:2020
EN ISO 17268:2020 (E)
European foreword

This document (EN ISO 17268:2020) has been prepared by Technical Committee ISO/TC 197

"Hydrogen technologies" in collaboration with 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 2020, and conflicting national standards shall

be withdrawn at the latest by August 2020.

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 ISO 17268:2016.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 17268:2020 has been approved by CEN as EN ISO 17268:2020 without any modification.

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SIST EN ISO 17268:2020
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SIST EN ISO 17268:2020
INTERNATIONAL ISO
STANDARD 17268
Third edition
2020-02
Gaseous hydrogen land vehicle
refuelling connection devices
Dispositifs de raccordement pour le ravitaillement des véhicules
terrestres en hydrogène gazeux
Reference number
ISO 17268:2020(E)
ISO 2020
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SIST EN ISO 17268:2020
ISO 17268:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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SIST EN ISO 17268:2020
ISO 17268:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General construction requirements ................................................................................................................................................. 3

5 Nozzles ............................................................................................................................................................................................................................ 5

6 Receptacles ................................................................................................................................................................................................................. 7

7 Design verification test procedures.................................................................................................................................................. 8

7.1 General requirements ....................................................................................................................................................................... 8

7.2 Test conditions ........................................................................................................................................................................................ 8

7.3 Nozzle tests ................................................................................................................................................................................................ 8

7.4 Receptacle tests ...................................................................................................................................................................................... 8

7.5 User — Machine interface ............................................................................................................................................................. 8

7.6 Dropping ....................................................................................................................................................................................................... 9

7.7 Leakage at room temperature ................................................................................................................................................... 9

7.8 Valve operating handle ..................................................................................................................................................................10

7.9 Receptacle vibration resistance ............................................................................................................................................10

7.10 Abnormal loads ...................................................................................................................................................................................10

7.11 Low and high temperatures ......................................................................................................................................................11

7.11.1 Purpose .................................................................................................................................................................................11

7.11.2 General...................................................................................................................................................................................11

7.11.3 Leakage tests ....................................................................................................................................................................11

7.11.4 Operation tests ...............................................................................................................................................................11

7.12 Durability and maintainability ...............................................................................................................................................12

7.12.1 Purpose .................................................................................................................................................................................12

7.12.2 Nozzle durability test ................................................................................................................................................12

7.12.3 Receptacle check valve durability test .......................................................................................................13

7.12.4 Receptacle durability test ......................................................................................................................................13

7.12.5 Connected nozzle and receptacle durability test ..............................................................................13

7.13 Sealing material aging test .........................................................................................................................................................13

7.13.1 Purpose .................................................................................................................................................................................13

7.13.2 Oxygen aging test procedure ..............................................................................................................................14

7.13.3 Ozone aging test procedure .................................................................................................................................14

7.14 Non-metallic material hydrogen resistance test .....................................................................................................14

7.15 Electrical resistance .........................................................................................................................................................................14

7.16 Hydrostatic strength .......................................................................................................................................................................14

7.17 Corrosion resistance .......................................................................................................................................................................15

7.17.1 Purpose .................................................................................................................................................................................15

7.17.2 General...................................................................................................................................................................................15

7.17.3 Nozzle test ..........................................................................................................................................................................15

7.17.4 Receptacle test ................................................................................................................................................................15

7.18 Deformation ...........................................................................................................................................................................................15

7.19 Contamination test ...........................................................................................................................................................................15

7.20 Thermal cycle test .............................................................................................................................................................................16

7.21 Pre-cooled hydrogen exposure test ...................................................................................................................................16

7.22 Misconnected nozzle test ............................................................................................................................................................16

7.23 Upward/downward nozzle compatibility test .........................................................................................................17

7.23.1 General...................................................................................................................................................................................17

7.23.2 Upwards nozzle compatibility test ................................................................................................................17

7.23.3 Downwards nozzle compatibility test ........................................................................................................17

7.24 Washout test ..........................................................................................................................................................................................18

7.25 User abuse test .....................................................................................................................................................................................18

© ISO 2020 – All rights reserved iii
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SIST EN ISO 17268:2020
ISO 17268:2020(E)

7.26 Freezing test ...........................................................................................................................................................................................18

7.27 Rocking test ............................................................................................................................................................................................19

7.28 Communication test.........................................................................................................................................................................20

8 Instructions .............................................................................................................................................................................................................20

9 Marking .......................................................................................................................................................................................................................21

Annex A (normative) Receptacle/nozzle interface envelope ...................................................................................................22

Annex B (normative) Hydrogen receptacles .............................................................................................................................................23

Annex C (normative) Loose fit test fixtures ................................................................................................................................................29

Annex D (normative) Tight fit test fixtures .................................................................................................................................................34

Annex E (normative) Wear pattern test fixtures ...................................................................................................................................39

Annex F (informative) Example hex design ................................................................................................................................................44

Bibliography .............................................................................................................................................................................................................................45

iv © ISO 2020 – All rights reserved
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SIST EN ISO 17268:2020
ISO 17268:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 197, Hydrogen technologies, in

collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC

268, Cryogenic vessels and specific hydrogen technologies applications, in accordance with the Agreement

on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 17268:2012), which has been technically

revised.
The main changes compared to the previous edition are as follows:

— Clause 1, Clause 2, 3.1, 4.9. 5.8, 5.9, 5.17, 6.1, 6.9, 7.2, 7.5, 7.7, 7.8, 7.12.2, 7.12.3, 7.12.4, 7.16, 7.22, 7.25,

7.26, 7.27, 7.28, Clause 9, Table 1, Figure 3, Figure 4, Annex A, Annex B, Annex C, Annex D, Annex E and

Annex F have been modified.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2020 – All rights reserved v
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SIST EN ISO 17268:2020
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SIST EN ISO 17268:2020
INTERNATIONAL STANDARD ISO 17268:2020(E)
Gaseous hydrogen land vehicle refuelling connection
devices
1 Scope

This document defines the design, safety and operation characteristics of gaseous hydrogen land

vehicle (GHLV) refuelling connectors.
GHLV refuelling connectors consist of the following components, as applicable:
— receptacle and protective cap (mounted on vehicle);
— nozzle;
— communication hardware.

This document is applicable to refuelling connectors which have nominal working pressures or

hydrogen service levels up to 70 MPa.

This document is not applicable to refuelling connectors dispensing blends of hydrogen with natural gas.

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.

ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and

dynamic strain testing
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests

ISO 12103-1, Road vehicles — Test contaminants for filter evaluation — Part 1: Arizona test dust

ISO 15501-1, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 1: Safety requirements

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
communication hardware

infrared data association (IrDA) components which are used to transmit signals from the vehicle

(receptacle) (3.15) to the dispenser (nozzle) (3.11) and designed to meet SAE J2799 or equivalent

© ISO 2020 – All rights reserved 1
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SIST EN ISO 17268:2020
ISO 17268:2020(E)
3.2
component pressure rating

maximum pressure at which it is permissible to operate a component as specified by the manufacturer

at a specified temperature

Note 1 to entry: Components designed to the maximum allowable pressure per the European Pressure Equipment

Directive (PED) represent the component ratings by the manufacturer that is indicated by the value of “PS.”

Note 2 to entry: See Table 1 for required component pressure ratings for various pressure classes (3.13) of fuelling

connectors (3.3).

Note 3 to entry: Further guidance on dispenser pressure terminology is included in ISO 19880-1.

Table 1 — Dispensing system pressure levels and refuelling connector ratings
NWP (3.10) of vehicle Pressure class (3.13) Maximum operating Minimum dispenser
(receptacle) (3.15) pressure component pressure
or (MOP) (3.9) rating
HSL (3.7) of dispenser (PS)
(nozzle) (3.11)
Equal to NWP of the 1,25 × HSL/1,25 × NWP 1,375 × HSL
vehicle storage system per
Highest fill pressure during Highest permissible set-
vehicle label
normal fuelling point for dispenser pressure
protection in ISO 19880-
1:—, 8.2.2.3
11 MPa H11 13,75 MPa 15,125 MPa
25 MPa H25 31,25 MPa 34,375 MPa
35 MPa H35 or H35HF 43,75 MPa 48,125 MPa
70 MPa H70 87,5 MPa 96,25MPa
High-flow connectors for heavy-duty commercial vehicles.
3.3
connector

joined assembly of nozzle (3.11) and receptacle (3.15) which permits the transfer of hydrogen

3.4
cycle

process of making a positive connection between the nozzle (3.11) and the receptacle (3.15), pressurizing

to the maximum operating pressure (3.9), depressurizing and disconnecting
3.5
dry helium

helium with a dew point adequate to prevent condensation during testing and at least 99 % pure

3.6
dry hydrogen
hydrogen which meets or exceeds the quality level in ISO 14687-2
3.7
hydrogen service level
HSL

pressure level used to characterize the hydrogen service of the dispenser based on the NWP (3.10)

rating of the vehicle

Note 1 to entry: The numerical value of HSL also matches the number after the “H” in the pressure class (3.13).

Note 2 to entry: HSL is expressed in MPa.
2 © ISO 2020 – All rights reserved
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SIST EN ISO 17268:2020
ISO 17268:2020(E)
3.8
leak test gas

gas for testing leaks that consists of dry hydrogen (3.6), or dry helium (3.5), or blends of a minimum

10 % of hydrogen or helium with nitrogen
3.9
maximum operating pressure
MOP

highest pressure that is expected for a component or system during normal operation

Note 1 to entry: Further guidance on dispenser pressure terminology is included in ISO 19880-1.

Note 2 to entry: The maximum operating pressure is 125 % of the nominal working pressure (3.10) or hydrogen

service level (3.7), as applicable, for the purpose of testing of nozzles (3.11) and receptacles (3.15) in this document.

3.10
nominal working pressure
NWP

pressure of a full vehicle compressed hydrogen storage system at a gas temperature of 15 °C

Note 1 to entry: See ECE/TRANS/180/Add. 13 Global Technical Regulation No. 13 clause II-3.37.

Note 2 to entry: See Table 1 for NWPs covered in this document.

Note 3 to entry: Further guidance on pressure terminology is included in ISO 19880-1.

Note 4 to entry: NWP is also known as “settled pressure” in ISO 10286.
3.11
nozzle

device connected to a fuel dispensing system, which permits the quick connect and disconnect of fuel

supply to the vehicle or storage system
3.12
positive locking device

device with the feature which requires actuation of an interlocking mechanism to achieve proper

connection of the nozzle (3.11) to the receptacle (3.15) before pressure is applied

3.13
pressure class

non-dimensional rating of components that indicates the components are designed to dispense

hydrogen to road vehicles at the required pressure and temperature
Note 1 to entry: See Table 1 for pressure classes of fuelling connectors (3.3).

Note 2 to entry: Further guidance on dispenser pressure terminology is included in ISO 19880-1.

3.14
protective cap

means to prevent dirt and other contaminants from getting into the inlet of the vehicle receptacle (3.15)

3.15
receptacle
device connected to a vehicle or storage system which receives the nozzle (3.11)

Note 1 to entry: This can also be referred to as a fuelling inlet of gas filling port in other documents.

4 General construction requirements

4.1 Nozzles and receptacles shall be designed in accordance with reasonable concepts of safety,

durability and maintainability.
© ISO 2020 – All rights reserved 3
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SIST EN ISO 17268:2020
ISO 17268:2020(E)

4.2 Nozzles and receptacles designed and tested in accordance with this document shall

a) prevent hydrogen fuelled vehicles from being filled by fuelling stations with working pressures

and/or flow rates higher than the design values specified for the vehicle;

b) prevent hydrogen fuelled vehicles from being filled by other compressed gas fuelling stations, for

example, natural gas and hydrogen-natural gas blends; and

c) prevent other gaseous fuelled vehicles from being filled by hydrogen fuelling stations.

4.3 Nozzles and receptacles shall be well fitted and manufactured in accordance with good engineering

practice.
4.4 Nozzles and receptacles shall be
a) designed to minimise the possibility of incorrect assembly;

b) designed to be secure against displacement, distortion, warping or other damage;

c) constructed to maintain operational integrity under normal and reasonable conditions of handling

and usage; and
d) designed with no self-evident means of defeating the safety features.

4.5 Nozzles and receptacles shall be manufactured of materials suitable and compatible for use with

compressed hydrogen at the pressure and the temperature ranges to which they will be subjected as

specified in 3.2, 5.8 and 6.9. Materials used in the construction of nozzles, receptacles and protective

caps shall be non-sparking or spark-reducing. All pressure bearing and wetted
...

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