S1. Scope. This standard specifies requirements for limitation of electrolyte spillage and retention of electric energy storage/conversion devices during and after. NHTSA is issuing this final rule to amend Federal Motor Vehicle Safety Standard (FMVSS) No. , “Electric-powered vehicles: Electrolyte. FMVSS No. was originally drafted based on a voluntary consensus standard, the Society of Automotive Engineers (SAE) Recommended.
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FMVSS 305: Electrolyte spillage and electrical shock protection for electric-powered vehicles
If the on-board electric energy storage device can be externally charged, vehicle movement of more than mm by its own propulsion system shall not be possible as long as the charge connector of the external electric power supply is physically connected to the vehicle charge inlet in a manner that would permit charging of the electric energy storage device.
In addition, the resistance between an exposed conductive part of the electrical protection barrier of the high voltage source and any other simultaneously reachable exposed conductive parts of electrical protection barriers within 2. Direct contact protection for a vehicle charge inlet shall be provided by meeting the requirements specified in S5.
For a service disconnect which can be opened, disassembled, or removed without fmmvss, protection degree IPXXB shall be provided when tested under procedures specified in S9. This device shall enable connection to the earth ground before exterior voltage is applied to the fmvws and retain the connection until after the exterior voltage is removed from the vehicle.
S9 Test methods for physical barrier protection from electric shock 3055 to direct and indirect contact with high voltage sources. External electric power supply is a power supply external to the vehicle that provides electric power to charge the electric energy storage device in the vehicle through the charge connector.
For a high voltage source that has an automatic disconnect that is not physically contained within itself, the voltage measurement after the test is made from both fkvss high voltage source side of the automatic disconnect and from the side of the automatic disconnect connected to the electric power train or to the fmvxs of the electric power train if the high voltage source is a component contained in the power train.
The methods specified in S9. The system must monitor its own readiness and the warning display must be visible to the driver seated in the driver ‘s designated seating position. Luggage compartment fmbss the space in the vehicle for luggage accommodation, separated from the passenger compartment by the front or rear bulkhead and bounded by a roof, hood or trunk lidfloor, and side walls, as well as by electrical protection barriers provided for protecting the occupants from direct contact with high voltage live parts.
Passenger compartment is the space for occupant accommodation that is bounded by the roof, floor, side walls, doors, outside glazing, front bulkhead and rear bulkhead or rear gate, as well as electrical protection barriers provided for protecting the occupants from direct contact fmvs high voltage live parts. Prior to any impact test, the requirements of S5.
The vehicle fmsvs meet the fmcss of S5.
The resistance between two exposed conductive parts of electrical protection barriers that are less than 2. Electrical isolation of a high voltage source in the vehicle means the electrical resistance between the high voltage source and any of the vehicle’s electrical chassis divided by the working voltage of the high voltage source.
FMVSS Electrolyte spillage and electrical shock protection for electric-powered vehicles
The electrical isolation of mfvss high voltage sourcedetermined fmvsd accordance with the procedure specified in S7. A high voltage source that is conductively connected to an electric component which is conductively connected to the electrical chassis and has a working voltage less than or equal to 60 VDCis not required to meet the electrical isolation requirements in S5. DC high voltage sources of vehicles with a fuel cell system shall be monitored by an electrical isolation monitoring system that displays a warning for loss of isolation when tested according to S8.
This requirement does not apply under conditions where an internal combustion engine provides directly or indirectly the vehicle’s propulsion power when the vehicle is first placed in a possible active driving mode after manual activation of the propulsion system.
Charge connector is a fmvws device that, by insertion into a vehicle charge inlet, establishes an electrical connection of the vehicle to the external electric power supply for the purpose of transferring energy and exchanging information. All measurements for calculating voltage s and electrical isolation are made after a minimum of 5 seconds after the vehicle comes to rest in tests specified in S6.
In a test vmvss under S6. Electric energy storage device means a high voltage source that stores energy for vehicle propulsion. Live part is a conductive part of the vehicle that is electrically energized under normal vehicle operation.
Electrical fmvs means conductive parts of the vehicle whose electrical potential is taken as reference and which are: Bypass any devices or systems that do not allow the propulsion system fnvss be energized at fjvss time of impact when the vehicle ignition is on and the vehicle is in neutral. Working Voltage means the highest root mean square voltage of the voltage source, which may occur across its terminals or between its terminals and any conductive parts in open circuit conditions or under normal operating conditions.
This includes, but is not limited to, a high voltage battery or battery pack, fuel cell stack, rechargeable energy storage device, and capacitor module.
Exposed conductive part is the conductive part that can be touched under the provisions of the IPXXB protection degree and that is not normally energized, but that can become electrically energized under isolation fault conditions. Possible active driving mode is the vehicle mode when application of pressure to the accelerator pedal or fmvas of an equivalent control or release of the brake system causes the electric power train vmvss move the vehicle.
Voltage Vb is measured across the two terminals of the voltage source.
During the measurement, the rechargeable electric energy storage system may be disconnected. If the probe partly rmvss fully penetrates into the electrical protection barrier, it is placed in every possible position to evaluate contact with high voltage live parts. Test procedure for on-board electrical isolation monitoring system.
Voltages V1 and V2 are measured between the source and the electrical chassis. This includes parts under a cover, if the cover can be removed without using tools. For a high voltage source that has an automatic disconnect that is not physically contained within itself, the electrical isolation measurement after the test is made from both the high voltage source side fmvws the automatic disconnect and from the side of the automatic disconnect connected to the electric power train or to the rest of the electric power train if the high voltage source is a component contained in the power train.
More limitations on accuracy are described at the GPO site. High voltage source means any electric component which is contained in the electric power train or conductively connected to the electric fmvsss train and has a working voltage greater than 30 VAC or 60 VDC. At least a momentary indication shall be given to the driver each time the vehicle is first placed in possible active driving mode after manual activation of the propulsion system.
In addition to the conditions of S7. Cornell Law School Search Cornell.
Before any vehicle impact test, Vb is equal to or greater than the nominal operating voltage as specified by the vehicle manufacturer. Spillage is measured from the time the vehicle ceases motion after a barrier impact test until 30 minutes thereafter, and throughout any static rollover after a barrier impact test.
The symbol shall be yellow and the bordering and the arrow shall be black. The resistance tester is connected to the measuring points the electrical chassis and any exposed conductive part of electrical protection barriers or any two simultaneously reachable exposed conductive parts of electrical protection barriers that are less than 2.
Fuel cell system is a system containing the fuel cell stack sair processing system, fuel flow control system, exhaust system, thermal management system, and water management system. Where a range is specified, the vehicle must be capable of meeting the requirements at all points within the range. Vehicle charge inlet is the device on the electric vehicle into which the charge connector is inserted for the purpose of transferring energy and exchanging information from an external electric power supply.
United States Code U. For a high voltage source that has an automatic disconnect that is physically contained within itself, the voltage measurement after the test is made from the side of the automatic disconnect connected to the electric power train or to the rest of the electric power train if the high voltage source is a component contained in the power train. This includes, but is not limited to, a high voltage battery or battery pack, rechargeable energy storage device, and capacitor module.
This standard applies to passenger cars, and to multipurpose passenger vehiclestrucks and buses with a GVWR of 4, kg or less, that use electrical propulsion components with working voltages more than 60 volts direct current VDC or 30 volts alternating current VACand whose speed attainable over a distance of 1.
This includes, but is not limited to, high voltage batteries or battery packs, fuel cell stacks, rechargeable energy storage systems, fvss modules, inverters, interconnects, and venting systems.