IEC 61851-1:2001

INTERNATIONAL IEC
STANDARD
61851-1
First edition
2001-01
Electric vehicle conductive charging system –
Part 1:
General requirements
Dispositif de charge conductive pour véhicules électriques –
Partie 1:
Prescriptions générales
Reference number
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INTERNATIONAL IEC
STANDARD
61851-1
First edition
2001-01
Electric vehicle conductive charging system –
Part 1:
General requirements
Dispositif de charge conductive pour véhicules électriques –
Partie 1:
Prescriptions générales
 IEC 2001  Copyright - all rights reserved
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– 2 – 61851-1  IEC:2001(E)
CONTENTS
Page
FOREWORD . 4

Clause
1 Scope . 6

2 Normative references . 6

3 Definitions. 7

4 General requirements. 10

5 Rating of the supply voltage . 10
6 General system requirement and interface. 10
6.1 General description . 10
6.2 EV charging modes . 10
6.3 Types of EV connection (cases A, B, and C). 11
6.4 Functions provided in each mode of charging . 11
6.4.1 Mandatory functions: . 12
6.4.2 Optional functions . 12
6.4.3 Control pilot circuit . 13
6.5 Serial data communication . 13
7 Protection against electric shock . 13
7.1 Protection against electric shock . 13
7.2 Protection against direct contact. 13
7.2.1 Accessibility of live parts . 13
7.2.2 Stored energy – discharge of capacitors . 14
7.3 Protection against indirect contact . 14
7.4 Supplementary measures. 14
7.4.1 Mandatory additional protection . 14
7.4.2 Optional additional protection . 14
7.5 Provision for the traction battery. 14
7.6 Additional requirements. 15
8 Connection between the power supply and the EV . 15
8.1 General. 15
8.2 Physical design of the universal interface . 15

8.3 Physical design of the basic interface . 16
8.4 Contact sequencing. 16
9 Specific inlet, connector, plug and socket-outlet requirements . 16
9.1 Operating temperature . 16
9.2 Vehicle inlet rating. 16
9.2.1 Universal inlet . 16
9.2.2 Basic inlet . 17
9.3 Connector rating . 18
9.3.1 Connector in accordance with the universal coupling . 18
9.3.2 Socket-outlet, plug or connector in accordance with the basic coupling . 18
9.4 Dielectric strength . 19
9.5 Insulation resistance . 19
9.6 Clearances and creepage distances . 19

61851-1  IEC:2001(E) – 3 –
Clause Page
9.7 Service life. 19

9.8 Breaking capacity:. 20

9.9 IP degrees . 20

9.10 Permissible surface temperature . 20

9.11 Insertion and extraction force . 20

9.12 Latching of the retaining device . 20

9.13 Service . 21

9.14 Impact . 21

9.15 Vehicle driveover . 21
9.16 Environmental conditions . 21
10 Charging cable. 21
10.1 Charging cable. 21
10.2 Extension cord . 21
Annex A (normative) Charging cable assembly requirements . 25
Annex B (informative) PWM control pilot circuit. 27
Annex C (informative) Control pilot circuit . 32
Annex D (informative) Coding tables for power indicator. 36
Annex E (informative) Examples of conductive charging system situations . 38
Bibliography . 39
Figure 1 – Case "A" connection – connection of an EV to an a.c. supply utilizing supply
cable and plug permanently attached to the EV. 22
Figure 2 – Case "B" connection – connection of an EV to an a.c. supply utilizing a
detachable cable assembly with a vehicle connector and a.c. supply equipment . 23
Figure 3 – Case "C" connection – connection of an EV to a.c. supply utilizing supply
cable and connector permanently attached to the supply equipment . 24
Figure B.1 – Typical control pilot circuit. 26
Figure B.2 – Control pilot equivalent circuit . 27
Figure B.3 – Supply current rating vs. pilot circuit duty cycle. 28
Figure C.1 – Mode 1 – case B. 34
Figure C.2 – Mode 3 – case B. 34

Figure C.3 – Mode 4 – case C . 35
Figure D.1 – AC mains current to measured voltage ratio. 39
Table 1 – Overview of the vehicle interface requirements . 15
Table 2 – Universal vehicle inlet requirements . 17
Table 3 – Basic vehicle inlet requirements . 17
Table 4 – Universal vehicle connector requirements. 18
Table 5 – Basic vehicle connector requirements. 19
Table B.1 – Definition of vehicle states . 30
Table B.2 – Control pilot circuit parameters (reference figure B.2) . 31
Table C.1 – Control pilot component functionality. 33
Table D.1 – Resistor values for R = 1 kΩ . 37
internal
– 4 – 61851-1  IEC:2001(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION

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ELECTRIC VEHICLE CONDUCTIVE CHARGING SYSTEM –

Part 1: General requirements
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
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for Standardization (ISO) in accordance with conditions determined by agreement between the two
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Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding natio
...