Hydrogen Fuel Cell Vehicle Fuel System Integrity Research: Electrical Isolation Test Procedure Development and Verification

The Federal Motor Vehicle Safety Standards (FMVSS) establish minimum levels for vehicle safety, and manufacturers of motor vehicle and equipment items must comply with these standards. The National Highway Traffic Safety Administration (NHTSA) contracted Battelle to develop a procedure for testing electrical isolation on hydrogen fuel cell vehicles (HFCVs) when crash testing without hydrogen. FMVSS 305, Electric Powered Vehicles: Electrolyte Spillage and Electrical Shock Protection, requires electrical isolation as the basis for defining electrical safety and for establishing a criterion for the prevention of electrical shock. Enhancement is required to address electrical safety of hydrogen vehicles, particularly when testing without hydrogen onboard the vehicle. The successful completion of Task Order 4, Electrical Isolation Test Procedure Development and Verification under the NHTSA Hydrogen Vehicle Fuel System Safety Program, yielded a verified electrical isolation test procedure utilizing a megohmmeter for testing a HFCV with an inert gas and inactive fuel cell. In addition to this procedure, some additional research activities evaluated the effects of temperature and age on fuel cell coolant and the potential for environmental conditions to alter isolation measurements.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 117p

Subject/Index Terms

Filing Info

  • Accession Number: 01663184
  • Record Type: Publication
  • Report/Paper Numbers: DOT HS 811 553
  • Contract Numbers: DTNH22-08-D-00080; Task Order 4
  • Created Date: Feb 8 2018 12:08PM