ISO 21498-1:2021
Electrically propelled road vehicles — Electrical specifications and tests for voltage class B systems and components — Part 1: Voltage sub-classes and characteristics
This document applies to voltage class B electric propulsion systems and connected auxiliary electric systems of electrically propelled road vehicles. Additionally, it applies to electric circuits and components in these systems.
This document provides specifications of voltage sub-classes related to DC electric circuits. It also provides specifications of characteristics which are relevant for design and operation of systems and components for the voltage sub-classes.
This document does not cover electrical safety (see ISO 17409 and the ISO 6469 series).
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 General assumptions for the voltage class B system
6 Voltage sub-classes
7 Characteristics of voltage sub-classes
7.1 General
7.2 Component operating status
7.3 Voltage operating ranges
7.4 Undervoltage and overvoltage
7.4.1 General
7.4.2 Overvoltage
7.4.3 Undervoltage
7.5 Allocation of voltage ranges and operating status – Overview
7.6 Voltage transients and ripple
7.6.1 General
7.6.2 Voltage slope
7.6.3 Load dump
7.6.4 Voltage ripple
Annex A (informative) Example for voltage ranges per voltage sub-class
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 General assumptions for the voltage class B system
6 Voltage sub-classes
7 Characteristics of voltage sub-classes
7.1 General
7.2 Component operating status
7.3 Voltage operating ranges
7.4 Undervoltage and overvoltage
7.4.1 General
7.4.2 Overvoltage
7.4.3 Undervoltage
7.5 Allocation of voltage ranges and operating status – Overview
7.6 Voltage transients and ripple
7.6.1 General
7.6.2 Voltage slope
7.6.3 Load dump
7.6.4 Voltage ripple
Annex A (informative) Example for voltage ranges per voltage sub-class
Bibliography