DS/ISO 17268:2020

Gaseous hydrogen land vehicle refuelling connection devices

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This International Standard 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, if applicable.
This International Standard applies to refuelling connectors which have working pressures of 11 MPa, 25 MPa,
35 MPa and 70 MPa, hereinafter referred to in this International Standard as the following:
– H11 – 11 MPa at 15 °C;
– H25 – 25 MPa at 15 °C;
– H35 – 35 MPa at 15 °C;
– H35HF – 35 MPa at 15 °C (high flow for commercial vehicle applications);
– H70 – 70 MPa at 15 °C.
Nozzles and receptacles that meet the requirements of this International Standard will only allow GHLVs to be
filled by fuelling stations dispensing hydrogen with nominal working pressures equal to or lower than the
vehicle fuel system working pressure. They will not allow GHLV to be filled by fuelling stations dispensing
blends of hydrogen with natural gas.
Nozzles and receptacles defined in this International Standard can be used to fuel different types of GHLVs.
The refuelling stations for these vehicles may have significantly different process limits and refuelling protocols.
The nozzle and receptacle alone may not ensure that a GHLV cannot refuel at an incompatible station. If this
occurs, the GHLV may be exposed to conditions outside of its intended limits, such as fuel container
overheating. If this is a potential problem, the user and station manufacturer should develop additional
controls to mitigate this risk.
As stated in ECE/TRANS/180/Add. 13 Global Technical Regulation No. 13 (Global technical regulation on
hydrogen and fuel cell vehicles – 19 July 2013), “Assurance of capability to sustain multiple occurrences of
over-pressurization due to fuelling station failure is provided by the requirement to demonstrate absence of
leak in 10 exposures to 150 per cent NWP fuelling.” Nozzles and receptacles defined in this International
Standard shall be tested in this way to accommodate similar fuelling station over-pressurization occurrences.
Nozzles that have been subjected to 10 over-pressurization occurrences shall be removed from service.

Number of pages: 54

Published: 2020-03-04

Date of approval: 2020-03-03

International relationships : ISO 17268:2020 IDT

ICS: 71.100.20 - Gases for industrial application 43.180 - Diagnostic, maintenance and test equipment

Item number: M338349



  • ISO/TC 197
  • ISO/TC 197/WG 5

Danish committee