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    • CAN/CSA-C22.2 NO. 281.1-12 (R2017)

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    CAN/CSA-C22.2 NO. 281.1-12 (R2017)

    Standard for safety for personnel protection systems for electric vehicle (EV) supply circuits: General requirements (Tri-national standard, with UL 2231-1 and NMX-J-668/1-ANCE)
    SKU: 2703450 Published by CSA Group Publication Year 2012 Reaffirmed in 2017

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    Overview

    In order to align the technical requirements of Electric Vehicle Supply Equipment (EVSE) intended for the North American market, CSA Group has published standards whose content has been harmonized for Canada, the U.S. and Mexico. C22.2 NO. 281.1-12 is a new harmonized standard that contains general requirements intended to reduce the risk of electric shock to the user from accessible parts, in grounded or isolated circuits for charging electric vehicles. These circuits are external to or on-board the vehicle.

    This standard works in conjunction with C22.2 NO. 281.2-12 - Standard for Safety for Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits: Particular Requirements for Protection Devices for Use in Charging Systems.

    Preface


    This is the harmonized ANCE, CSA Group, and UL standard for Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits: General Requirements. It is the Second edition of NMX-J-668-1-ANCE, the First edition of CAN/CSA-C22.2 No. 281.1, and the Second edition of UL 2231%u20131. This harmonized standard has been jointly revised on August 26, 2016. For this purpose, CSA Group and UL are issuing revision pages dated August 26, 2016, and ANCE is issuing a new edition dated August 26, 2016. 



    Scope


    1.1

    These requirements cover devices and systems intended for use in accordance with Annex A, Ref. No. 1, to reduce the risk of electric shock to the user from accessible parts, in grounded or isolated circuits for charging electric vehicles. These circuits are external to or on board the vehicle.


    1.2

    The devices and systems covered by these requirements are compatible with the designs of charging systems and vehicles where use is intended and are rated accordingly. To assure compatibility, the charging system, the vehicle, or both, are in accordance with the features contained in 1.3 - 1.5.


    1.3

    The type of vehicle covered by these requirements, including all accessible conductive parts on the vehicle, has one or more of the following:


    a) Provision for the connection of an equipment grounding conductor during battery charging, unless the vehicle has a system of reinforced or double insulation or all of the circuitry on the vehicle is electrically isolated from the supply circuit,


    b) Provision for the connection of ground-monitoring conductors, where required,


    c) Reinforced insulation, or is double-insulated from the supply circuit, or


    d) No direct connection between current-carrying conductors and the vehicle chassis.


    1.4

    These requirements cover devices and systems where the grounding path impedance of the charging system to the vehicle is less than or equal to the impedance of the ungrounded conductor or conductors.


    1.5

    These requirements cover devices and systems where a continuous current less than 70 mA RMS is available from any accessible part of the charging system.


    1.6

    Devices covered by these requirements are intended to interrupt the electric circuit to the load when:


    a) A fault current to ground exceeds some predetermined value that is less than that required to operate the overcurrent protective device of the supply circuit,


    b) The grounding path becomes open-circuited or becomes an excessively high impedance, or


    c) A path to ground is detected on an isolated (ungrounded) system.


    1.7

    These devices and systems are intended to be applied on electrical systems or include derived systems that are:


    a) Either end-grounded or centrally grounded when the operating voltage is 150 Vrms or less,


    b) Centrally grounded when the operating voltage is greater than 150 Vrms, or


    c) Isolated (ungrounded).


    1.8

    Charging circuit-interrupting devices covered by these requirements are investigated for their ability to provide protection based on:


    a) The type of current (60 Hz AC, DC, a combination of AC and DC, or AC at frequencies greater than 60 Hz) present in the circuit to be protected, and


    b) Voltage.


    1.9

    In Mexico and the US, these requirements do not cover ground-fault circuit-interrupters (GFCIs) intended for use as personnel protection in accordance with the national electrical codes on grounded 120 Vrms or 127 Vrms to ground, 60 Hz circuits. Such devices are covered under Annex A, Ref. No. 2.


    In Canada, these requirements do not cover ground-fault circuit-interrupters (GFCIs) in accordance with the national electrical code on grounded 120 Vrms or 127 Vrms to ground, 60 Hz circuits. Such devices are covered under Annex A, Ref. No. 2.


    1.10

    This Standard includes the Scope, Definitions, and Description of Requirements, including the required features of protection systems. The standards in Annex A, Ref. No. 3 contain the Performance and Construction requirements for protective devices that would become a part of a charging system.

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    CAN/CSA-C22.2 NO. 281.1-12 (R2017)

    Standard for safety for personnel protection systems for electric vehicle (EV) supply circuits: General requirements (Tri-national standard, with UL 2231-1 and NMX-J-668/1-ANCE)

    Active
    English

    CAN/CSA-C22.2 NO. 281.1-F12 (C2017)

    Norme de sécurité sur les systèmes de protection du personnel pour les circuits d'alimentation des véhicules électriques (VÉ) : exigences générales (norme trinational avec UL 2231-1 et NMX-J-668/1-ANCE)

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    French
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