ISO 6469-3-2021

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Electrically propelled road vehicles —



Part 3:

Electrical safety

Véhicules routiers électriques — Spécifications de sécurité —

Partie 3: Sécurité électrique

INTERNATIONAL

STANDARD

ISO

6469-3

Fourth edition

2021-10

Reference number

ISO 6469-3:2021(E)











CP 401 • Ch. de Blandonnet 8



Phone: +41 22 749 01 11



Website: www.iso.org

Published in Switzerland

Foreword ..........................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

  ..................................................................................................................................................................................... 1

  .................................................................................................................................................................................... 1

4 Voltage classes ........................................................................................................................................................................................................ 6

  .................................................................................................................................................................................... 6

 .......................................................................................................... 6

5.2 Marking ......................................................................................................................................................................................................... 7

5.2.1 Marking of voltage class B electric components .................................................................................... 7

5.2.2 Marking of voltage class B wiring ....................................................................................................................... 7

 ....................................................................... 7

  ...................................................................................................................................................................... 7

  ............................................................ 7

  ................................................................................................. 7

  ................................................................................................. 8

6.2 Basic protection ..................................................................................................................................................................................... 8

6.3 Fault protection and additional measures ..................................................................................................................... 8

  ........................................................................................................................................... ........ 8

6.3.2 Isolation resistance .......................................................................................................................................................... 9

6.3.3 Provisions for capacitive coupling and capacitive discharge .................................................. 10

6.3.4 De-energization ...................................................................... .......................................................................................... 11

6.3.5 Alternative protection measures ..................................................................................................................... 11

  .................................................................................................. 12

  ..................................................................................................................................................................................... 12

  ................................................................................................................................. 12

  ...................................... 12

  .............................................................................................................................. 13

6.4.5 Insulation coordination............................................................................................................................................. 13

6.5 Alternative approach for protection against electric shock ....................................................................... 13

  ........................................................................................................................................13

7.1 Overload protection ........................................................................................................................................................................ 13

7.2 Short-circuit protection ............................................................................................................................................................... 13

  ...............................................................................................................14

  ................................................................................................................................................................................................. 14

  .................................................................................................................................................................................................14

  ........................................................................................................................................................................................................ 14

  .................................................................................................................. 14

10.3 Isolation resistance measurements for voltage class B2 electric circuits ..................................... 14

10.3.1 Preconditioning and conditioning ................................................................................................................... 14

10.3.2 Isolation resistance measurements of the balance of electric circuits........................... 15

10.3.3 Isolation resistance measurement of the voltage class B2 electric power

sources ..................................................................................................................................................................................... 15

10.3.4 Isolation resistance measurement of entire electric circuits.................................................. 18

  ................................................................................................... 18

10.5 Touch current........................................................................................................................................................................................ 18

10.6 Withstand voltage test ................................................................................................................................................................. 19

  ..................................................................................................................................................................................... 19

10.6.2 Preconditioning and conditioning ................................................................................................................... 19

10.6.3 Test procedure................................................................................................................................................................... 19

10.6.4 Test criteria .......................................................................................................................................................................... 20

10.7 Withstand voltage test for electric power sources which are not de-energized ...................... 20

ISO 6469-3:2021(E)

iii

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标签： #ISO

摘要：

ISO 6469-3-2021 是国际标准化组织发布的电动汽车安全标准第三部分，全称为《道路车辆电动汽车安全规范第3部分：人员触电防护》。该标准于2021年更新，主要规定了电动道路车辆在正常使用、充电及故障条件下对乘客和维修人员的触电防护要求，涵盖高压电气系统绝缘电阻、电位均衡、剩余电流监测及紧急断电等关键技术指标。适用于纯电动车、混合动力车及燃料电池车辆，旨在确保车辆在碰撞、浸水或老化后仍能有效防止高危电压暴露，为全球电动汽车制造商提供统一的安全设计基准，也是各国认证法规的重要参考依据。

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ISO 6469-3-2021

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