ISO 21780:2020 PDF

Name: ISO 21780:2020 — Road vehicles — Supply voltage of 48 V — Electrical requirements and tests
SKU: ISO 21780:2020
Price: 25 EUR
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Road vehicles — Supply voltage of 48 V — Electrical requirements and tests

Название (английский):

ISO 21780:2020

Road vehicles — Supply voltage of 48 V — Electrical requirements and tests

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 44
Дата публикации:: 3 августа 2020 г.
Издание:: ISO IS 21780 edition 1 version 1
ICS:: 43.040.10

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Описание (английский):

This document covers requirements and tests for the electric and electronic components in road vehicles equipped with an electrical system operating at a nominal voltage of 48 V DC. This includes the following: — general requirements on 48 V DC electrical systems; — voltage ranges; — slow voltage transients and fluctuations (not including EMC).

Abstract

Похожие стандарты

Другие стандарты ISO

Overview

ISO 21780:2020 - Road vehicles: Supply voltage of 48 V - Electrical requirements and tests defines electrical requirements and test methods for components and systems in road vehicles that use a nominal 48 V DC electrical system. The standard covers general system requirements, allowable voltage ranges, and characterization of slow voltage transients and fluctuations (excluding EMC). It provides a structured test suite and functional definitions to ensure component compatibility, robustness and predictable behaviour under realistic vehicle supply conditions.

Key topics and technical requirements

Scope and definitions: Terms, functional statuses (FS1–FS5) and functional categories that describe expected behavior under different vehicle operating conditions.

Supply voltage range: Nominal 48 V system boundaries and transient limits to be used during testing.

Operating modes and prerequisites: System conditions, interfaces and sampling/monitoring requirements for reproducible tests.

Comprehensive test catalogue (examples from the standard):

Nominal voltage range verification
Lower and upper transitory voltage ranges
Short-term and long-term overvoltage tests
Load dump and consumer-sourcing overvoltage scenarios
Starting profile and supply decrease/increase tests
Voltage ripple and discontinuity assessments
Reinitialisation, ground loss, fault current and ground offset tests
Short circuits in signal/load lines and quiescent current measurements

Test procedures and reporting: General test conditions, sampling rates, parameter checks, continuous monitoring with drift analysis and physical analysis after testing.

Exclusions: Electromagnetic compatibility (EMC) issues are explicitly outside the scope - ISO 21780 focuses on slow transients and DC supply behavior.

Practical applications

Design validation: Electrical and electronic component manufacturers use ISO 21780 to validate that products tolerate 48 V vehicle supply conditions.

System integration: Automotive engineers and integrators apply the standard to ensure subsystem interoperability and safe behavior during vehicle events (start, load dump, ground faults).

Quality and compliance testing: Test labs and OEM validation teams implement the specified procedures to demonstrate conformity and reduce field failures.

R&D and benchmarking: Helps compare component resilience and set robust design margins for 48 V vehicle architectures.

ISO 21780:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

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