ISO 21498-2:2021 pdf download – Electrically propelled road vehicles — Electrical specifications and tests for voltage class B systems and components — Part 2: Electrical tests for components.
3.3 electric circuit entire set of interconnected electric/electronic parts through which electrical current is designed to flow under normal operating conditions [SOURCE: ISO 21498-1:2021, 3.3] 3.4 lower voltage limit minimum voltage of a voltage class B (3.13) sub-class 3.5 maximum working voltage highest value of AC voltage (rms) or of DC voltage that can occur under any normal operating conditions according to the customer’s (3.2) specifications, disregarding transients (3.10) and ripple (3.8) [SOURCE: ISO 21498-1:2021, 3.5] 3.6 power network all components within voltage class B (3.13) DC network including their connections [SOURCE: ISO 21498-1:2021, 3.6] 3.7 rechargeable energy storage system RESS rechargeable system that stores energy for delivery of electric energy for the electric drive EXAMPLE Batteries, capacitors, flywheel. [SOURCE: ISO 21498-1:2021, 3.7] 3.8 ripple set of unwanted periodic deviations with respect to the average value of the measured or supplied quantity, occurring at frequencies which can be related to that of components within a system [SOURCE: ISO 21498-1:2021, 3.8] 3.9 supplier party that provides voltage class B (3.13) components or systems [SOURCE: ISO 21498-1:2021, 3.9] 3.10 transient phenomenon or quantity which varies between two consecutive steady states during a short time interval compared to the time-scale of interest [SOURCE: ISO 21498-1:2021, 3.10]
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.