ISO 21498-2:2021 pdf download.Electrically propelled road vehicles -Electrical specifications and tests for voltage class B systems and components
1 Scope
This document applies to voltage class B electric propulsion systems and connected auxiliary electric systems of electrically propelled road vehicles. It applies to electric circuits and components in these systems.
This document focuses on the characteristics at the DC voltage class B terminals of these components as specified in ISO 21498-1. It describes testing methods, test conditions and test requirements for components exposed to electrical behaviour caused by operation of electric loads and power sources.
This document does not cover electrical safety (see ISO 6469, ISO 17409).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the cited edition applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/TR 8713, Electrically propelled road vehicles一Vocabulary
ISO 21498-1, Electrically propelled road vehicles - Electrical specifications and tests for voltage class B systems and components - Part 1: Voltage sub-classes and characteristics
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 8713 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
一ISO Online browsing platform: available at https://www .org/obp
一IEC Electropedia: available at http://www.electropedia.org/
5 General assumptions for voltage class B components
General assumptions and definitions for voltage class B systems shall be as in ISO 21498-1.
Figure 1 shows a generalized view on a voltage class B component. Some of the connections shown may not be available for all voltage class B components. All voltage profiles or voltage values in this document refer to the voltage between the "HV+" and“HV-" terminals of a voltage class B component, if not otherwise stated.
Due to the differences between different voltage class B components, Table A.1 gives an overview on how the different tests, which are described in this document, are applicable. Not all tests are reasonable for all voltage class B components.
A voltage class B component may have multiple interfaces for each type of voltage (voltage class B DC,voltage class B AC, voltage class A, according to Figure 1). For example, a DC/ DC converter may interface to two voltage class B electric circuits.
A voltage class B component may have multiple voltage class B DC terminals, which can be galvanically separated. The tests described in this document shall be fulfilled for each of these terminals.ISO 21498-2 pdf download.