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BS EN IEC 61851-25:2021

$215.11

Electric vehicle conductive charging system – DC EV supply equipment where protection relies on electrical separation

Published By Publication Date Number of Pages
BSI 2021 72
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This document applies to the DC EV supply equipment for charging electric road vehicles with a rated supply voltage of up to 480 V AC or up to 600 V DC, with rated output voltage not exceeding 120 V DC and output currents not exceeding 100 A DC.

This document provides the requirements for the DC EV supply equipment where the secondary circuit is protected from the primary circuit by electrical separation.

Requirements for bi-directional power flow are not covered in this document.

This document also provides the requirements for the control and the communication between DC EV supply equipment and an EV.

This document also applies to DC EV supply equipment supplied from on-site storage systems.

The aspects covered in this document include:

  • characteristics and operating conditions of the DC EV supply equipment;

  • specification of the connection between the DC EV supply equipment and the EV;

  • requirements for electrical safety for the DC EV supply equipment.

Additional requirements can apply to equipment designed for specific environments or conditions, for example:

  • DC EV supply equipment located in hazardous areas where flammable gas or vapour and/or combustible materials, fuels or other combustible, or explosive materials are present;

  • DC EV supply equipment designed to be installed at an altitude of more than 2 000 m;

  • DC EV supply equipment intended to be used on-board ships.

Requirements for electrical devices and components used in DC EV supply equipment are not included in this document and are covered by their specific product standards.

This document does not apply to:

  • safety aspects related to maintenance;

  • charging of trolley buses, rail vehicles, industrial trucks and vehicles designed primarily for use off-road;

  • equipment on the EV;

  • EMC requirements for equipment on the EV while connected, which are covered in IEC 61851-21-1;

  • charging the RESS off-board the EV.

NOTE In the following countries electrical separation can only be handled by skilled people: CH

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publications with their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
13 2 Normative references
3 Terms and definitions
15 4 General requirements
16 5 Classification
6 Charging modes and functions
21 Tables
Table 1 – Normal shutdown events and conditions
Table 2 – Error shutdown events and conditions
22 7 Communications
23 8 Protection against electric shock
24 9 Conductive electrical interface requirements
25 10 Requirements for adaptors
11 Cable assembly requirements
26 12 EV supply equipment constructional requirements and tests
29 Figures
Figure 1 – Measuring network for touch current evaluation weighted for perception or reaction
31 13 Overload and short-circuit protection
32 14 Automatic reclosing of protective devices
15 Emergency switching or disconnect (optional)
16 Marking and instructions
33 Figure 2 – Example of warning label
34 Annex AA (normative) Interface between DC EV supply equipment and EV
Table AA.1 – Voltage of control pilot circuit
36 Figure AA.1 – Interface circuit for energy transfer control showing isolation barriers
Table AA.2 – Parameter values for interface circuit
37 Annex BB (normative)Level, timing and tolerance of DC output current and DC output voltage
38 Figure BB.1 – Step response for constant value control
39 Table BB.1 – Requirements for the output response performance of DC EV supply equipment
40 Figure BB.2 – Example of DC output current flow controlled by the DC EV supply equipment and the corresponding terminal voltage using a simple battery model
41 Figure BB.3 – Example of current limiting followed by voltage limiting for resistive load
42 Table BB.2 – Current ripple limit of DC EV supply equipment
43 Annex CC (normative)Description of test equipment, test reporting and test environment
Figure CC.1 – Example of test circuit for DUT using a computer and external EV simulation circuit
44 Figure CC.2 – Example of test load
46 Figure CC.3 – Operation points
47 Annex DD (normative)Compliance tests
Table DD.1 – Correspondence between requirements and test descriptions
48 Table DD.2 – Initial switch and parameter values for a normal start-up sequence
51 Table DD.3 – The test value for control pilot circuit
54 Table DD.4 – Shutdown requirements
56 Annex EE (normative)Energy transfer process and communication
Table EE.1– Energy transfer state of DC EV supply equipment
58 Figure EE.1 – State transition diagram of charging process
59 Figure EE.2 – Sequence diagram of energy transfer
62 Annex FF (normative)Digital communication for controlof energy transfer
Figure FF.1 – Transmission cycle
Table FF.1 – Physical/data link layer specification
64 Table FF.2 – Received parameters during energy transfer (1 of 3)
67 Table FF.3 – Transmitted parameters during DC charging (1 of 2)
70 Bibliography
BS EN IEC 61851-25:2021
$215.11