ISO/DIS 17409.2
(Main)Electrically propelled road vehicles -- Connection to an external electric power supply -- Safety requirements
Electrically propelled road vehicles -- Connection to an external electric power supply -- Safety requirements
Véhicules routiers à propulsion électrique -- Connexion à une borne d'alimentation électrique externe -- Exigences de sécurité
General Information
Standards Content (sample)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 17409.2
ISO/TC 22/SC 21 Secretariat: DIN
Voting begins on: Voting terminates on:
2014-03-14 2014-05-14
Electrically propelled road vehicles — Connection to an
external electric power supply — Safety requirements
Véhicules routiers à propulsion électrique — Connexion à une borne d’alimentation électrique externe —
Exigences de sécuritéICS: 43.120
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
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STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 17409.2:2014(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2014
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ISO/DIS 17409.2:2014(E)
Copyright notice
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ii © ISO 2014 – All rights reserved
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ISO/DIS 17409.2
Contents Page
1 Scope ...................................................................................................................................................... 1
2 Normative references ............................................................................................................................ 1
3 Terms and definitions ........................................................................................................................... 2
4 Environmental conditions .................................................................................................................... 6
5 Requirements for protection of persons against electric shock ...................................................... 6
5.1 Basic protection .................................................................................................................................... 6
5.2 Protection under single failure conditions ......................................................................................... 7
5.3 Isolation resistance ............................................................................................................................... 8
5.3.1 A.c. connection (Mode 1, 2 and 3) ....................................................................................................... 8
5.3.2 D.c. connection (Mode 4) ...................................................................................................................... 8
5.4 Protection from unintended voltage .................................................................................................... 8
5.4.1 Mode 1 .................................................................................................................................................... 8
5.4.2 Mode 2 and mode 3 ............................................................................................................................... 8
5.4.3 Mode 4 .................................................................................................................................................... 9
5.5 Insulation coordination ......................................................................................................................... 9
5.5.1 General ................................................................................................................................................... 9
5.5.2 A.c. connection (Mode 1, 2 and 3) ..................................................................................................... 10
5.5.3 D.c. connection (Mode 4) .................................................................................................................... 10
6 Protection against thermal incident .................................................................................................. 10
6.1 Overcurrent protection ....................................................................................................................... 10
6.1.1 Overload protection ............................................................................................................................ 10
6.1.2 Short-circuit protection for a.c. connection ..................................................................................... 10
6.1.3 Short-circuit protection for d.c. connection ..................................................................................... 11
6.2 Arc protection for d.c. connections ................................................................................................... 11
6.3 Residual energy after disconnection ................................................................................................ 11
7 Specific requirements for the vehicle inlet, plug and cable ............................................................ 11
7.1 Requirements for the plug and cable ................................................................................................ 11
7.2 Requirements for the vehicle inlet ..................................................................................................... 11
8 Additional requirements for a.c. electric power supply .................................................................. 12
8.1 Standard a.c. external electric power supply conditions for operation in service ....................... 12
8.2 Current characteristics ....................................................................................................................... 12
8.3 D.c. fault currents ................................................................................................................................ 12
8.4 Touch current ...................................................................................................................................... 13
8.5 Unintended reverse power flow ......................................................................................................... 13
8.6 Power factor ......................................................................................................................................... 13
9 Additional requirements for d.c. electric power supply .................................................................. 13
9.1 Disconnection device .......................................................................................................................... 13
9.2 Control pilot functions ........................................................................................................................ 13
9.3 Vehicle isolation resistance monitoring system .............................................................................. 13
9.4 Locking of the vehicle connector ...................................................................................................... 14
9.5 A.c. or d.c. electric power at the same contacts .............................................................................. 14
9.6 Contact temperature at vehicle inlet ................................................................................................. 15
9.7 Overvoltage in case of a load dump .................................................................................................. 15
9.8 Unintended reverse power flow ......................................................................................................... 15
9.9 Y capacitances ..................................................................................................................................... 15
10 Operational requirements ................................................................................................................... 15
11 User manual and marking................................................................................................................... 15
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ISO/DIS 17409.2
11.1 Owner's guide or manual ....................................................................................................................15
11.2 Marking .................................................................................................................................................16
12 Test procedure .....................................................................................................................................16
12.1 General note on tests ..........................................................................................................................16
12.2 Resistance of protective conductor ...................................................................................................16
12.3 Isolation resistance test ......................................................................................................................16
12.3.1 Preconditioning and conditioning .....................................................................................................16
12.3.2 Isolation resistance measurements at the vehicle inlet or plug .....................................................16
12.4 Withstand voltage test ........................................................................................................................17
12.4.1 General ..................................................................................................................................................17
12.4.2 Preconditioning and conditioning .....................................................................................................17
12.4.3 Test procedure .....................................................................................................................................17
12.4.4 Test voltage ..........................................................................................................................................18
12.5 Touch current .......................................................................................................................................18
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ISO/DIS 17409.2
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 17409 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 21,
Electrically propelled road vehicles.This second/third/... edition cancels and replaces the first/second/... edition (), [clause(s) / subclause(s) /
table(s) / figure(s) / annex(es)] of which [has / have] been technically revised.
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DRAFT INTERNATIONAL STANDARD ISO/DIS 17409.2
1 Electrically propelled road vehicles — Connection to an
2 external electric power supply — Safety requirements
3 1 Scope
4 This standard specifies electric safety requirements for conductive connection of electrically propelled road
5 vehicles to an external electric power supply using a plug or vehicle inlet.6 It applies to electrically propelled road vehicles with voltage class B electric circuits. In general it may apply to
7 motorcycles and mopeds if no dedicated standards for these vehicles exist.8 It applies only to vehicle power supply circuits. It applies also to dedicated power supply control functions used
9 for the connection of the vehicle to an external electric power supply.10 It does not provide requirements regarding the connection to a non-isolated d.c. charging station.
11 It does not provide comprehensive safety information for manufacturing, maintenance and repair personnel.
12 The requirements when not connected to off-board equipment of the external electric power supply are
13 specified in ISO 6469-3.14 NOTE 1 This standard does not contain requirements for class II vehicle power supply circuits using protection by class II
15 or double/reinforced insulation but it is not the intention to exclude such vehicle applications.
16 NOTE 2 Requirements for EV supply equipment are specified in IEC 61851.17 2 Normative references
18 The following referenced documents are indispensable for the application of this document. For dated
19 references, only the edition cited applies. For undated references, the latest edition of the referenced
20 document (including any amendments) applies.21 ISO 6469-1, Electrically propelled road vehicles - Safety specifications – Part 1: On-board rechargeable
22 energy storage system (RESS)23 ISO 6469-3:2011, Electrically propelled road vehicles - Safety specifications – Part 3: Protection of persons
24 against electric shock25 ISO 13849 (all parts), Safety of machinery – Safety-related parts of control systems
26 ISO 20653, Road vehicles – Degrees of protection (IP-Code) – Protection of electrical equipment against
27 foreign objects, water and access28 ISO 26262 (all parts), Road vehicles - Functional safety
29 IEC 60309-1, Plugs, socket-outlets and couplers for industrial purposes – Part 1: General requirements
30 IEC 60309-2, Plugs, socket-outlets and couplers for industrial purposes – Part 2: Dimensional
31 interchangeability requirements for pin and contact-tube accessories© ISO 2014 – All rights reserved
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ISO/DIS 17409.2
32 IEC 60364-5-54, Electrical installations of buildings - Part 5-54: Selection and erection of electrical equipment
33 - Earthing arrangements, protective conductors and equipotential bonding34 IEC 60664 (all parts), Insulation coordination for equipment within low-voltage systems – Part 1: Principles,
35 requirements and tests36 IEC 60884-1, Plugs, socket-outlets and couplers for household and similar purposes – Part 1: General
37 requirements38 IEC 60950-1:2005, Information technology equipment – Safety – Part 1: General requirements
39 IEC 60990:1999, Methods of measurements of touch current and protective conductor current
40 IEC 61851-1, Electric vehicle conductive charging system – Part 1: General requirements
41 IEC 61851-23, Electric vehicle conductive charging system – Part 23: D.C. electric vehicle charging station
42 (Under development)43 IEC 62196-1, Plugs, socket-outlets, vehicle connectors and vehicle inlets – conductive charging of electric
44 vehicles – Part 1: General requirements45 IEC 62196-2, Plugs, socket-outlets, vehicle connectors and vehicle inlets – conductive charging of electric
46 vehicles – Part 2: Dimensional compatibility and interchangeability requirements for a.c. pin and contact-tube
47 accessories48 IEC 62196-3, Plugs, socket-outlets, vehicle connectors and vehicle inlets – conductive charging of electric
49 vehicles – Part 3: Dimensional compatibility and interchangeability requirements for dedicated d.c. and
50 combined a.c./d.c. pin and contact-tube vehicle couplers (Under development)51 ISO/IEC 15118 (all parts), Road vehicles -- Vehicle to grid communication interface
52 3 Terms and definitions53 For the purposes of this document, the following terms and definitions apply.
54 3.1
55 balance of electric power system
56 remaining portion of a voltage class B electric circuit when all RESS and fuel cell stacks are disconnected
57 3.258 barrier
59 part providing protection against direct contact from any usual direction of access
60 3.361 basic insulation
62 insulation of hazardous-live-parts which provides basic protection
63 3.4
64 case A
65 connection of an EV to the a.c. supply network (mains) utilizing a supply cable and plug permanently attached
66 to the EV67 3.5
68 case B
69 connection of an EV to the a.c. supply network (mains) utilizing a detachable cable assembly with a vehicle
70 connector and a.c. supply equipment© ISO 2014 – All rights reserved
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ISO/DIS 17409.2
71 3.6
72 case C
73 connection of an EV to the a.c. supply network (mains) utilizing a supply cable and vehicle connector
74 permanently attached to the supply equipment.75 NOTE Case C is the only connection case for mode 4 charging (see IEC 61851-1).
76 3.777 charger
78 power converter at the vehicle power supply circuit which supplies electric power, e.g. for charging a RESS
79 3.880 conductive part
81 part capable of conducting electric current
82 3.9
83 control pilot circuit
84 a circuit designed for the transmission of signals and/or communication between an EV and an EV supply
85 equipment86 NOTE: In mode 2, circuit between an EV and an ICCB.
87 3.10
88 control pilot conductor
89 insulated conductor incorporated in an EV cable assembly, that creates, together with the protective
90 conductor, the control pilot circuit.91 3.11
92 control pilot function
93 functionality used to monitor and control the interaction between the electric vehicle and the supply equipment
94 3.1295 d.c. EV charging station
96 EV supply equipment intended to supply DC current to an EV
97 3.13
98 direct contact
99 contact of persons with live parts
100 3.14
101 double insulation
102 insulation comprising both basic insulation and supplementary insulation
103 3.15
104 electric chassis
105 conductive parts of a vehicle that are electrically connected and whose potential is taken as reference
106 3.16107 electric shock
108 physiological effect resulting from an electric current passing through a human body
109 3.17110 electric vehicle/electric road vehicle (EV)
111 any vehicle propelled by an electric motor drawing current from a RESS intended primarily for use on public
112 roads© ISO 2014 – All rights reserved
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ISO/DIS 17409.2
113 3.18
114 enclosure
115 part providing protection of equipment against direct contact from any direction
116 3.19117 EV supply equipment
118 equipment or combined equipment providing dedicated functions for an electric power supply from a fixed
119 installation to an EV for the purpose of charging for all dedicated charging modes and cases of connection
120 3.20121 exposed conductive part
122 conductive part of the electric equipment, which can be touched by a test finger according to IPXXB (see ISO
123 20653) after removing barriers/enclosures which can be removed without using tools and which is not
124 normally live, but which may become live under fault conditions125 3.21
126 external electric power supply
127 electric power source that is not part of the vehicle for supplying electric energy to an EV using an EV supply
128 equipment129 3.22
130 in-cable control box (ICCB)
131 device incorporated in the mode 2 cable assembly, which performs control functions and safety functions
132 NOTE The in-cable control box is located in a detachable cable assembly or plug that is not part of the fixed
133 installation.134 3.23
135 isolation resistance
136 resistance between live parts of voltage class B electric circuit and the electric chassis as well as the voltage
137 class A system138 3.24
139 live conductor (line and neutral)
140 conductor which is energized in normal operation and capable of contributing to the transmission or
141 distribution of electric energy142 3.25
143 live part
144 conductor or conductive part intended to be electrically energized in normal use
145 3.26146 maximum working voltage
147 highest value of a.c. voltage (rms) or of d.c. voltage which may occur in an electric system under any normal
148 operating conditions according to manufacturer’s specifications, disregarding transients
149 3.27150 mode 1
151 connection of the EV to the a.c. supply network (mains) utilizing a cable and plug, that is not fitted with any
152 supplementary pilot or auxiliary contacts, and connects to a standard socket-outlet
153 3.28154 mode 2
155 connection of the EV to the a.c. supply network (mains) utilizing a cable and plug connected to a standard
156 socket-outlet, with a control pilot function and system for personal protection against electric shock placed
157 between the EV and the socket outlet© ISO 2014 – All rights reserved
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ISO/DIS 17409.2
158 3.29
159 mode 3
160 connection of the EV utilizing EV supply equipment permanently connected to the a.c. supply network (mains),
161 and where the control pilot function extends to control equipment in the EV Supply equipment
162 3.30163 mode 4
164 connection of the EV to the a.c. or d.c. supply network (mains) utilizing a d.c. EV supply equipment or d.c. EV
165 charging station using a control pilot function166 3.31
167 non-isolated d.c. EV charging station
168 d.c. EV charging station with d.c. circuit on output side which is not electrically separated by at least basic
169 isolation from the supply system170 3.32
171 plug
172 accessory having contacts designed to engage with the contacts of a socket-outlet, also incorporating means
173 for the electrical connection and mechanical retention of flexible cables or cords
174 3.33175 protective conductor (PE)
176 conductor provided for purposes of safety, for example protection against electric shock
177 3.34178 rechargeable energy storage system / RESS
179 system that stores energy for delivery of electric energy and which is rechargeable
180 EXAMPLE batteries, capacitors181 3.35
182 reinforced insulation
183 insulation of hazardous-live-parts which provides a degree of protection against electric shock equivalent to
184 double insulation185 NOTE Reinforced insulation may comprise several layers which cannot be tested singly as basic insulation or
186 supplementary insulation187 3.36
188 residual current device (RCD)
189 mechanical switching device or association of devices designed to make, carry and break currents under
190 normal service conditions and to cause the opening of the contacts when the residual current attains a given
191 value under specified conditions192 NOTE A residual current device can be a combination of various separate elements designed to detect and evaluate
193 the residual current and to make and break current.194 3.37
195 socket-outlet
196 accessory having socket-contacts designed to engage with the contacts of a plug and having terminals for the
197 connection of cables or cords198 3.38
199 standard plug and socket-outlet
200 plug and socket-outlet which meets the requirements of any IEC and/or national standard that provides
201 interchangeability by standard sheets, excluding the specific EV accessories as defined in the IEC 62196
202 series203 NOTE The standards IEC 60309-1, IEC 60309-2 and IEC 60884-1 define standard plugs and socket-outlets
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ISO/DIS 17409.2
204 3.39
205 supplementary insulation
206 independent insulation applied in addition to basic insulation for fault protection
207 3.40208 vehicle connector
209 part of a vehicle coupler integral with, or intended to be attached to the cable assembly
210 3.41211 vehicle coupler
212 means of enabling the manual connection of a flexible cable to an EV for the purpose of supplying electric
213 energy to an EV.214 NOTE It consists of two parts: a vehicle connector and a vehicle inlet.
215 3.42
216 vehicle inlet
217 part of a vehicle coupler incorporated in, or fixed to, the EV or intended to be fixed to it
218 3.43219 vehicle isolation resistance monitoring system
220 system which periodically or continuously monitors the isolation resistance between live parts of voltage class
221 B electric circuits and the electric chassis222 3.44
223 vehicle power supply circuit
224 voltage class B electric circuit which includes all parts that are galvanically connected to the vehicle inlet (case
225 B, case C) or the plug (case A) and that is operational when connected to an external electric power supply
226 3.45227 voltage class A
228 classification of an electric component or circuit as belonging to voltage class A, if its maximum working
229 voltage is ≤ 30 V a.c. (rms) or ≤ 60 V d.c. respectively230 3.46
231 voltage class B
232 classification of an electric component or circuit as belonging to voltage class B, if its maximum working
233 voltage is (> 30 V and ≤ 1000) V a.c. (rms) or ( > 60 V and ≤ 1500) V d.c. respectively
234 4 Environmental conditions235 The requirements given in this standard shall be met across the range of environmental conditions for which
236 the electric vehicle is designed to operate when connected to an external electric power supply, as specified
237 by the vehicle manufacturer.238 NOTE See ISO 16750-4 for guidance.
239 5 Requirements for protection of persons against electric shock
240 5.1 Basic protection
241 In this section requirements for protection against direct contact at the vehicle inlet (case B and C) and at the
242 plug (case A) are specified.243 Standard plug mated with standard socket-outlet (case A) shall comply with the requirements of relevant
244 standards, and the national requirements of the country where the product is placed on the market.
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ISO/DIS 17409.2
245 Plug according to IEC 62196 mated with socket-outlet according to IEC 62196 (case A) shall comply with the
246 degree of protection IPXXD at minimum in accordance with ISO 20653.247 Mated portion of the vehicle inlet mated with vehicle connector (case B and case C) shall comply with IPXXD
248 at minimum in accordance with ISO 20653. The requirements for unmated contacts of such a vehicle inlet are
249 specified in 5.4.250 5.2 Protection under single failure conditions
251 For mode 1, 2, 3 and 4, the plug (case A) or the vehicle inlet (case B and case C) shall have a contact for
252 connecting the vehicle electric chassis to the protective conductor of an external electric power supply.
253 To provide protection under single failure conditions, at least one of the following requirements shall be
254 fulfilled:255 The protective conductor terminal of the plug (case A) or the vehicle inlet (case B and case C) shall be
256 connected to the vehicle electric chassis fulfilling the requirements for protective conductor connection. All
257 exposed conductive parts of the vehicle power supply circuit shall be connected to the vehicle electric
258 chassis fulfilling the requirements for the protective conductor connection. An example for this option is
259 given in Figure 1;260
Charger with
Vehicle
galvanical separation
inlet
261
RESS
262
263
Protective
conductor
264
Potential equalization
Protective
according to ISO 6469-3
conductor
265
Electric chassis
Vehicle power supply circuit
266
267 Figure 1 — Connection between protective conductor and electric chassis – example for Option 1
268 The protective conductor terminal of the plug (case A) or the vehicle inlet (case B and case C) shall be
269 connected to exposed conductive parts of the vehicle power supply circuit fulfilling the requirements for
270 protective conductor connection. All exposed conductive parts of the on-board charging electric circuit
271 conductively connected to the external electric power supply shall be connected to the vehicle electric
272 chassis fulfilling the requirements for protective conductor connection. An example for th
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