Regulation No. 100-00

Name:Regulation No. 100-00
Description:Electric Vehicles - Battery Driven - Construction and Safety.
Official Title:Uniform Provisions Concerning the Approval of: Battery Electric Vehicles with Regard to Specific Requirements for the Construction, Functional Safety and Hydrogen Emission.
Country:ECE - United Nations
Date of Issue:1997-04-11
Amendment Level:00 Series, Supplement 1
Number of Pages:41
Vehicle Types:Bus, Car, Heavy Truck, Light Truck
Subject Categories:Prior Versions
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Keywords:

vehicle, hydrogen, battery, enclosure, test, approval, type, parts, regulation, paragraph, charge, traction, temperature, means, annex, volume, electric, chamber, power, hazardous, protection, voltage, calibration, pressure, emission, emissions, charging, system, normal, charger, access, procedure, on-board, failure, analyser, equipment, period, requirements, live, part, initial, nominal, manufacturer, production, maximum, number, measured, tests, mass, granted

Text Extract:

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E/ECE/324 )
E/ECE/TRANS/505 ) Rev.2/Add.99/Amend.1
May 7, 2002
STATUS OF UNITED NATIONS REGULATION
ECE 100
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
BATTERY ELECTRIC VEHICLES WITH REGARD TO SPECIFIC
REQUIREMENTS FOR THE CONSTRUCTION, FUNCTIONAL
SAFETY AND HYDROGEN EMISSION
Incorporating:
00 series of amendments
Date of Entry into Force: 23.08.96
Corr. 1 to the 00 series of amendments
Dated: 28.06.96
Supplement 1 to the 00 series of amendments
Date of Entry into Force: 21.02.02

REGULATION
1. Scope
2. Definitions
REGULATION No. 100
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF BATTERY
ELECTRIC VEHICLES WITH REGARD TO SPECIFIC REQUIREMENTS FOR
THE CONSTRUCTION, FUNCTIONAL SAFETY AND HYDROGEN EMISSION
3. Application for approval
4. Approval
5. Specifications and tests
CONTENTS
6. Modifications and extension of the type approval for vehicle type
7. Conformity of production
8. Penalties for non-conformity of production
9. Production definitely discontinued
10. Names and addresses of technical services responsible for conducting approval tests and of
administrative departments
ANNEXES
Annex 1 − Communication
Annex 2 − Arrangements of approval marks
Annex 3 − Protection against direct contacts of parts under voltage
Annex 4 − Measurement of the insulation resistance using the traction battery
Annex 5 − Symbol for the indication of a voltage
Annex 6 − Essential characteristics of the vehicle
Annex 7

Determination of hydrogen emissions during the charge procedures of the traction
battery

2.11. "Power train" means the electrical circuit including:
(i)
(ii)
(iii)
(iv)
(v)
The traction battery;
The electronic converters (on-board charger, electronic control of the traction motor,
DC/DC converter, etc.);
The traction motors, the associated wiring harness and connectors, etc.
The charging circuit;
The power auxiliary equipment (e.g. heating, defrosting, power steering, …).
2.12. "Driver train" means specific components of power train: traction motors, electronic control
of the traction motors, the associated wiring harness and connectors.
2.13. "Electronic converter" means an apparatus allowing the control and/or transfer of electric
energy.
2.14. "Passenger and load compartment" means the space in the vehicle for occupant
accommodation and bounded by the roof, floor, side walls, outside glazing, front bulkhead
and the plane of the rear-seat back support and eventually the partition between it and the
compartment(s) containing the battery modules.
2.15. "Drive direction control unit" means a specific device physically actuated by the driver in
order to select the drive direction (forwards or backwards), in which the vehicle will travel if
the accelerator is actuated.
2.16. "Direct contact" means the contact of persons or livestock with live parts.
2.17. "Live parts" means any conductor or conductive part(s) intended to be electrically
energised in normal use.
2.18. "Indirect contact" means contact or persons or livestock with exposed conductive parts.
2.19. "Exposed conductive part" means any conductive part which can readily be touched and
which is not normally alive, but which may become electrically energised under fault
conditions.
2.20. "Electrical circuit" means an assembly of connected live parts through which an electrical
current is designed to pass in normal operation conditions.
2.21. "Active driving possible mode" means a vehicle mode when application of pressure to
the accelerator pedal (or activation of an equivalent control) will cause the drive train to
move the vehicle.
2.22. "Nominal voltage" means the root-mean-square (r.m.s.) value of the voltage specified by
the Manufacturer, for which the electrical circuit is designed and to which its characteristics
are referred.

4.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every vehicle conforming to a vehicle type approved under this Regulation
an international approval mark consisting of:
4.4.1. A circle surrounding the Letter "E" followed by the distinguishing number of the country
which has granted approval
4.4.2. The number of this Regulation, followed by the Letter "R", a dash and the approval number
to the right of the circle described in Paragraph 4.4.1.
4.5. If the vehicle conforms to a vehicle type approved under one or more other Regulations
annexed to the Agreement in the country which has granted approval under this Regulation,
the symbol prescribed in Paragraph 4.4.1. need not be repeated; in this case the Regulation
and approval numbers and the additional symbols of all the Regulations under which
approval has been granted in the country which has granted approval under this Regulation
shall be placed in vertical columns to the right of the symbol prescribed in Paragraph 4.4.1.
4.6. The approval mark shall be clearly legible and shall be indelible.
4.7. The approval mark shall be placed on or close to the vehicle data plate affixed by the
Manufacturer.
4.8. Annex 2 to this Regulation gives examples of the arrangements of the approval mark.
5. SPECIFICATIONS AND TESTS
5.1. Vehicle Construction Requirements
5.1.1. Traction Battery
5.1.1.1. Installation of the traction battery in the vehicle shall not allow any potential dangerous
accumulation of gas pockets.
5.1.1.2. Battery compartments containing battery modules which may produce hazardous gases
shall be safely ventilated.
5.1.1.3. The traction battery and the power train shall be protected by properly rated fuses or circuit
breakers. The Manufacturer shall supply data to the laboratory which allows verification that
their calibration ensures opening, if necessary.

5.1.2.3. Insulation Resistance
5.1.2.3.1. The insulation resistance measurement is performed after maintaining the vehicle for a
conditioning time of 8 hours with the following conditions:
Temperature:
23 ± 5°C,
Humidity:
90% +10/-5%.
5.1.2.3.2. Using a measuring DC voltage equal to the nominal voltage of the traction battery, insulation
resistances between any exposed conductive part and each polarity of the battery shall
have a minimum value of 500 Ω/V of the nominal voltage (Annex 4 contains an example of
how this test may be conducted).
5.1.2.3.3. Resistance of the Protective Conductor:
The potential equalisation resistance between any two exposed conductive parts shall be
lower than 0.1 Ω. This test shall be performed by a current of at least 0.2 A.
5.1.2.4. Connection of the vehicle to the mains network:
5.1.2.4.1. In no case the vehicle shall be capable to move by its own means when it is galvanically
connected to an energy supply network or to an off-board charger;
5.1.2.4.2. The components used when charging the battery from an external source shall allow the
charging current to be cut in case of disconnection without physical damage;
5.1.2.4.3. The coupling system parts likely to be live shall be protected against any direct contact in all
operating conditions;
5.1.2.4.4. All exposed conductive parts shall be electrically linked through a conducting wire plugged
to earth when charging.
5.2. Functional Safety Requirements
5.2.1. Power on Procedure:
5.2.1.1. The power on procedure shall be applied via a key switch.
5.2.1.2. It shall not be possible to remove this key in any position that energises the drive train or
makes active driving possible.
5.2.2. Running and Stopping Conditions:
5.2.2.1. At least a momentary indication must be given to the driver either:
(a)
(b)
When the vehicle is in "active driving possible mode" or,
When one further action is required to place the vehicle in "active driving possible
mode".

5.3.7. Normal operations of connection and disconnection to the mains or power cuts must not
affect the control system of the charging phases.
5.3.8. Important charging failures must be permanently signalled to the driver. An important failure
is a failure that can lead to a disfunctioning of the on-board charger during charging later on.
5.3.9. The manufacturer has to indicate in the owner's manual, the conformity of the vehicle to
these requirements.
5.3.10. The approval granted to a vehicle type relative to hydrogen emissions can be extended to
different vehicle types belonging to the same family, in accordance with the definition of the
family given in Annex 7, Appendix 2.
6. MODIFICATION AND EXTENSION OF THE TYPE APPROVAL FOR VEHICLE TYPE
6.1. Every modification of the vehicle type shall be notified to the administrative department
which approved the vehicle type. The department may then either:
6.1.1. Consider that the modifications made are unlikely to have an appreciable adverse effect and
that in any case the vehicle still complies with the requirements or
6.1.2. Require a further test report from the technical service responsible for conducting the tests.
6.2. Confirmation or refusal of approval, specifying the alteration, shall be communicated by the
procedure specified in Paragraph 4.3. above to the Parties to the Agreement applying this
Regulation.
6.3. The competent Authority issuing the extension of approval shall assign a series number for
such an extension and inform thereof the other Parties to the 1958 Agreement applying the
Regulation by means of a communication form conforming to the model in Annex 1 to this
Regulation.
7. CONFORMITY OF PRODUCTION
7.1. Every vehicle approved under this Regulation shall be so manufactured as to conform to the
type approved by meeting the requirements set out in Paragraph 5. above.
7.2. In order to verify that the requirements of Paragraph 7.1. are met, suitable controls of the
production shall be carried out.
7.3. The holder of the approval shall, in particular:
7.3.1. Ensure the existence of procedures for the effective quality control of vehicles;
7.3.2. Have access to the testing equipment necessary for checking the conformity of each
approved type;
7.3.3. Ensure that test result data are recorded and that the annexed documents remain available
for a period to be determined in agreement with the administrative department;
7.3.4. Analyse the results of each type of test, in order to verify and ensure the consistency of
characteristics of the vehicle, making allowance for permissible variations in industrial
production;

10. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS
The Contracting Parties to the 1958 Agreement applying this Regulation shall communicate
to the United Nations Secretariat the names and addresses of the technical services
responsible for conducting approval tests and the administrative departments which grant
approval and to which forms certifying approval or extension or refusal or withdrawal of
approval or production definitely discontinued, issued in other countries are to be sent.

13.
Place .........................................................................................................................................
14.
Date ...........................................................................................................................................
15.
Signature ...................................................................................................................................
16.
The documents filed with the request for approval or extension may be obtained on request.

ANNEX 3
PROTECTION AGAINST DIRECT CONTACTS OF PARTS UNDER VOLTAGE
Extract from the IEC 529 Standard (1989)
1. DEFINITIONS
1.1. Enclosure
For the purpose of this Standard, the following definitions apply:
A part providing protection of equipment against certain external influences and, in any
direction, protection against direct contact (IEV 826-03-12).
Note: This definition taken from the existing International Electrotechnical Vocabulary (IEV)
needs the following explanations under the scope of this Standard:
(a)
(b)
Enclosures provide protection of persons (or livestock) against access to hazardous
parts.
Barriers, shapes of openings or any other means - whether attached to the enclosure
or formed by the enclosed equipment - suitable to prevent or limit the penetration of
the specified test probes are considered as a part of the enclosure, except when they
can be removed without the use of a key or tool.
1.2. Direct contact
Contact of persons (or livestock) with live parts (IEV 826-03-05).
Note: This IEV definition is given for information. In this Standard "Direct contact" is
replaced by "Access to hazardous parts".
1.3. Degree of protection
1.4. IP code
The extent of protection provided by an enclosure against access to hazardous parts,
against ingress of solid foreign objects and/or against ingress of water and verified by
standardised test methods.
A coding system to indicate the degrees of protection provided by an enclosure against
access to hazardous parts, ingress of solid foreign objects, ingress of water to give
additional information in connection with such protection.
1.5. Hazardous part
A part that is hazardous to approach or touch.
1.5.1. Hazardous Live Part
A live part which, under certain conditions of external influences, can give an electric shock
(see IEC 536, at present Document 64 (CO) 196).

2. TEST FOR PROTECTION AGAINST ACCESS TO HAZARDOUS PARTS INDICATED BY
THE ADDITIONAL LETTER
2.1. Access Probes
Access probes to verify the protection of persons against access to hazardous parts are
given in Table 1.
2.2. Test Conditions
The access probe is pushed against any openings of the enclosure with the force specified
in Table 1. If it partly or fully penetrates, it is placed in every possible position, but in no
case shall the stop face fully penetrate through the opening.
Internal barriers are considered part of the enclosure as defined in Paragraph 1.1.
For tests on low-voltage equipment, a low-voltage supply (or not less than 40 V and not
more than 50 V) in series with a suitable lamp should be connected between the probe and
the hazardous parts inside the enclosure. Hazardous live parts covered only with varnish or
paint, or protected by oxidation or by a similar process, are covered by metal foil electrically
connected to those parts which are normally live in operation.
The signal-circuit method should also be applied to the hazardous moving parts of a
high-voltage equipment.
Internal moving parts may be operated slowly, where this is possible.
2.3. Acceptance Conditions
The protection is satisfactory is adequate clearance is kept between the access probe and
hazardous parts.
In the case of the test for the additional Letter B, the jointed test finger may penetrate to its
80 mm length, but the stop face (∅ 50 mm x 20 mm) shall not pass through the opening.
Starting from the straight position, both joints of the test finger shall be successively bent
through and angle of up to 90° with respect to the axis of the adjoining section of the finger
and shall be placed in every possible position.
In case of the tests for the additional Letter D, the access probe may penetrate to its full
length, but the stop face shall not fully penetrate through the opening. See Annex A for
further clarification.
Conditions for verification of adequate clearance are identical with those given in
Paragraph 2.3.1. below.
2.3.1. For low-voltage equipment (rated voltages not exceeding 1,000 V AC and 1,500 V DC):
The access probe shall not touch hazardous live parts.
If adequate clearance is verified by a signal circuit between the probe and hazardous parts,
the lamp shall not light.

Material: metal, except where otherwise specified
Linear dimensions in millimetres
Tolerances on dimensions without specific tolerance:
on angles: 0/ - 10°
on linear dimensions:
up to 25 mm: 0/ - 0.05
over 25 mm: ± 0.2
Both joints shall permit movement in the same plane and the same direction
through an angle of 90° with a 0 to +10° tolerance.
Figure 1
Jointed Test Finger

Step two:
Where R0 is a resistance of 500 Ω/V
The value of the insulation resistance Ri is given by one of the formula:
V1 − V2
Ri x Ro
V2
or
Ri =
V'1 − V2
x Ro
V2

ANNEX 6
ESSENTIAL CHARACTERISTICS OF THE VEHICLE
1. GENERAL DESCRIPTION OF VEHICLE
1.1. Trade name or mark of the vehicle: ...............................................................................................
1.2. Vehicle type: ...................................................................................................................................
1.3. Manufacturer's name and address: ................................................................................................
1.4. If applicable, name and address of manufacturer's representative: ..............................................
1.5. Brief description of the power circuit components installation or drawings/pictures showing the
location of the power circuit components installation .....................................................................
1.6. Schematic diagram of all electrical functions included in power circuit: .........................................
1.7. Working voltage: ..........................................................................................................................V
1.8. Drawing and/or photograph of the vehicle:
2. DESCRIPTION OF MOTOR(S)
2.1. Make: ..............................................................................................................................................
2.2. Type: ..............................................................................................................................................
2.3. Working principle: ...........................................................................................................................
2.3.1. Direct current/alternative current/number of phases
2.3.2. Excitation: separate/shunt/series/compound
2.3.3. Synchron/asynchron
2.3.4. Cooling system: air/liquid
3. DESCRIPTION OF TRANSMISSION
3.1. Type: manual/automatic/none/others (to specify): .....................................................................
3.2. Transmission ratios: .......................................................................................................................
3.3. Dimension of tyres: ........................................................................................................................

5.7.
Specification of mains:
5.7.1.
Type of mains: single phase/three phase
5.7.2.
Voltage: ........................................................................................................................................V
6.
FUSE AND/OR CIRCUIT BREAKER
6.1.
Type: ..............................................................................................................................................
6.2.
Diagram showing the functional range: ..........................................................................................
7.
POWER WIRING HARNESS
7.1.
Type: ...............................................................................................................................................

Figure 7.1
Determination of Hydrogen Emissions during
the Charge Procedures of the Traction Battery

4.3.2. Hydrogen Analyser Data Recording System
The hydrogen analyser must be fitted with a device to record electrical signal output, at a
frequency of at least once per minute. The recording system must have operating
characteristics at least equivalent to the signal being recorded and must provide a
permanent record of results. The recording must show a clear indication of the beginning
and end of the normal charge test and charging failure operation.
4.4. Temperature Recording
4.4.1. The temperature in the chamber is recorded at two points by temperature sensors, which
are connected so as to show a mean value. The measuring points are extended
approximately 0.1 m into the enclosure from the vertical centre line of each side-wall at a
height of 0.9 ± 0.2 m.
4.4.2. The temperatures of the battery modules are recorded by means of the sensors.
4.4.3. Temperatures must, throughout the hydrogen emission measurements, be recorded at a
frequency of at least once per minute.
4.4.4. The accuracy of the temperature recording system must be within ± 1.0 K and the
temperature must be capable of being resolved to ± 0.1 K.
4.4.5. The recording or data processing system must be capable of resolving time to
± 15 seconds.
4.5. Pressure Recording
4.5.1. The difference Δp between barometric pressure within the test area and the enclosure
internal pressure must, throughout the hydrogen emission measurements, be recorded at a
frequency of at least once per minute.
4.5.2. The accuracy of the pressure recording system must be within ± 2 hPa and the pressure
must be capable of being resolved to ± 0.2 hPa.
4.5.3. The recording or data processing system must be capable of resolving time to
± 15 seconds.
4.6. Voltage and Current Intensity Recording
4.6.1. The on-board charger voltage and current intensity (battery) must, throughout the hydrogen
emission measurements, be recorded at a frequency of at least once per minute.
4.6.2. The accuracy of the voltage recording system must be within ± 1 V and the voltage must be
capable of being resolved to ± 0.1 V.
4.6.3. The accuracy of the current intensity recording system must be within ± 0.5 A and the
current intensity must be capable of being resolved to ± 0.05 A.
4.6.4. The recording or data processing system must be capable of resolving time to
± 15 seconds.

5.1. Vehicle Preparation
The ageing of traction battery must be checked, proving that the vehicle has performed at
least 300 km during seven days before the test. During this period, the vehicle must be
equipped with the traction battery submitted to the hydrogen emission test. If this cannot be
demonstrated then the following procedure will be applied.
5.1.1. Discharges and Initial Charges of the Battery
The procedure starts with the discharge of the traction battery of the vehicle while driving on
the test track or on a chassis dynamometer at a steady speed of 70% ± 5% of the maximum
speed of the vehicle during 30 minutes.
5.1.1. Discharging is Stopped:
(a)
(b)
(c)
when the vehicle is not able to run at 65% of the maximum thirty minutes speed, or
when an indication to stop the vehicle is given to the driver by the standard on-board
instrumentation, or
after having covered the distance of 100 km.
5.1.2. Initial Charge of the Battery
The charge is carried out:
(a)
with the on-board charger,
(b) in an ambient temperature between 293 K and 303 K.
The procedure excludes all types of external chargers.
The end of traction battery charge criteria corresponds to an automatic stop given by the
on-board charger.
This procedure includes all types of special charges that could be automatically or manually
initiated like, for instance, the equalisation charges or the servicing charges.
5.1.3. Procedure from Paragraphs 5.1.1 to 5.1.2 must be repeated two times.
5.2. Discharge of the Battery
The traction battery is discharged while driving on the test track or on a chassis
dynamometer at a steady speed of 70% ± 5% from the maximum thirty minutes speed of the
vehicle.
Stopping the discharge occurs:
(a)
(b)
when an indication to stop the vehicle is given to the driver by the standard on-board
instrumentation, or
when the maximum speed of the vehicle is lower than 20 km/h.

5.4.9. The end of the emission sampling period occurs t + t or t + 5 h after the beginning of the
initial sampling, as specified in Paragraph 5.4.6. The different times elapsed are
recorded. The hydrogen concentration, temperature and barometric pressure are measured
to give the final readings C , T and P for the normal charge test, used for the calculation
in Paragraph 6.
5.5. Hydrogen Emission Test with the On-board Charger Failure
5.5.1. Within seven days maximum after having completed the prior test, the procedure starts with
the discharge of the traction battery of the vehicle according to Paragraph 5.2.
5.5.2. The steps of the procedure in Paragraph 5.3 must be repeated.
5.5.3. Before the completion of the soak period, the measuring chamber must be purged for
several minutes until a stable hydrogen background is obtained. The enclosure mixing
fan(s) must also be turned on at this time.
5.5.4. The hydrogen analyser must be zeroed and spanned immediately prior to the test.
5.5.5. At the end of the soak, the test vehicle, with the engine shut off and the test vehicle windows
and luggage compartment opened must be moved into the measuring chamber.
5.5.6. The vehicle shall be connected to the mains. The battery is charged according to failure
charge procedure as specified in Paragraph 5.5.9 below.
5.5.7. The enclosure doors are closed and sealed gas-tight within two minutes from electrical
interlock of the failure charge step.
5.5.8. The start of a failure charge for hydrogen emission test period begins when the chamber is
sealed. The hydrogen concentration, temperature and barometric pressure are measured
to give the initial readings C , T and P for the failure charge test. These figures are used
in the hydrogen emission calculation (Paragraph 6). The ambient enclosure temperature T
must not be less than 291 K and no more than 295 K during the charging failure period.
5.5.9. Procedure of Charging Failure
The charging failure is carried out with the on-board charger and consists of the following
steps:
(a) Charging at constant power during t' .
(b)
Charging at maximum current during 30 minutes. During this phase, the on-board
charger is blocked at maximum current.
5.5.10. The hydrogen analyser must be zeroed and spanned immediately before the end of the test.
5.5.11. The end of the test period occurs t' + 30 minutes after the beginning of the initial sampling,
as specified in Paragraph 5.8.8. The times elapsed are recorded. The hydrogen
concentration, temperature and barometric pressure are measured to give the final readings
C , T and P for the charging failure test, used for the calculation in Paragraph 6.

ANNEX 7 − APPENDIX 1
CALIBRATION OF EQUIPMENT
FOR HYDROGEN EMISSION TESTING
1. CALIBRATION FREQUENCY AND METHODS
All equipment must be calibrated before its initial use and then calibrated as often as
necessary and in any case in the month before type approval testing. The calibration
methods to be used are described in this Appendix.
2. CALIBRATION OF THE ENCLOSURE
2.1. Initial Determination of Enclosure Internal Volume
2.1.1. Before its initial use, the internal volume of the chamber must be determined as
follows. The internal dimensions of the chamber are carefully measured, taking into account
any irregularities such as bracing struts. The internal volume of the chamber is determined
from these measurements.
The enclosure must be latched to a fixed volume when the enclosure is held at an ambient
temperature of 293 K. This nominal volume must be repeatable within ± 0.5% of the
reported value.
2.1.2. The net internal volume is determined by subtracting 1.42 m from the internal volume of the
chamber. Alternatively the volume of the test vehicle with the luggage compartment and
windows open may be used instead of the 1.42 m .
2.1.3. The chamber must be checked as in Paragraph 2.3. If the hydrogen mass does not agree
with the injected mass to within ± 2% then corrective action is required.
2.2. Determination of Chamber Background Emissions
This operation determines that the chamber does not contain any materials that emit
significant amounts of hydrogen. The check must be carried out at the enclosure's
introduction to service, after any operations in the enclosure which may affect background
emissions and at a frequency of at least once per year.
2.2.1. Variable-volume enclosure may be operated in either latched or unlatched volume
configuration, as described in Paragraph 2.1.1. Ambient temperature must be maintained at
293 K ± 2 K, throughout the 4-hour period mentioned below.
2.2.2. The enclosure may be sealed and the mixing fan operated for a period of up to 12 hours
before the four-hour background-sampling period begins.
2.2.3. The analyser (if required) must be calibrated, then zeroed and spanned.
2.2.4. The enclosure must be purged until a stable hydrogen reading is obtained, and the mixing
fan turned on if not already on.

2.3.9. The contents of the chamber must be allowed to mix for a minimum of 10 hours. At the
completion of the period, the final hydrogen concentration, temperature and barometric
pressure are measured and recorded. These are the final readings C , T and P for the
hydrogen retention check.
2.3.10. Using the formula in Paragraph 2.4, the hydrogen mass is then calculated from the readings
taken in Paragraphs 2.3.7 and 2.3.9. This mass may not differ by more than 5% from the
hydrogen mass given by Paragraph 2.3.8.
2.4. Calculation
The calculation of net hydrogen mass change within the enclosure is used to determine the
chamber's hydrogen background and leak rate. Initial and final readings of hydrogen
concentration, temperature and barometric pressure are used in the following formula to
calculate the mass change.
M
= k × V × 10

⎜ ⎜
⎛ 1 +
⎜ ⎝
× ⎜


V
V

⎟ × C

T
× P
C



× P ⎟
T



where:
M
=
hydrogen mass, in grams
C
=
measured hydrogen concentration into the enclosure, in ppm volume
V
=
enclosure volume in cubic metres (m ) as measured in Paragraph 2.1.1.
V
=
Compensation volume in m , at the test temperature and pressure
T
=
ambient chamber temperature, in K
P
=
absolute enclosure pressure, in kPa
k
=
2.42
where:
i is the initial reading
f is the final reading

ANNEX 7 − APPENDIX 2
ESSENTIAL CHARACTERISTICS OF THE VEHICLE FAMILY
1. PARAMETERS DEFINING THE FAMILY RELATIVE TO HYDROGEN EMISSIONS
The family may be defined by basic design parameters which must be common to vehicles
within the family. In some cases there may be interaction of parameters. These effects
must also be taken into consideration to ensure that only vehicles with similar hydrogen
emission characteristics are included within the family.
2. To this end, those vehicle types whose parameters described below are identical are
considered to belong to the same hydrogen emissions.
Traction Battery:






Trade name or mark of the battery
Indication of all types of electro-chemical couples used
Number of battery cells
Number of battery modules
Nominal voltage of the battery (V)
Battery energy (kWh)
− Gas combination rate (in %)


Type(s) of ventilation for battery module(s) or pack
Type of cooling system (if any)
On-board Charger:







Make and type of different charger parts
Output nominal power (kW)
Maximum voltage of charge (V)
Maximum intensity of charge (A)
Make and type of control unit (if any)
Diagram of operating, controls and safety
Characteristics of charge periods
Electric Vehicles - Battery Driven - Construction and Safety.