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BS ISO 21780:2020

BS ISO 21780:2020

$198.66

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

Published By Publication Date Number of Pages
BSI 2020 54
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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:

  1. general requirements on 48 V DC electrical systems;

  2. voltage ranges;

  3. slow voltage transients and fluctuations (not including EMC).

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Functional status
4.1 General
11 4.2 Functional status 1 (FS1)
4.3 Functional status 2 (FS2)
4.4 Functional status 3 (FS3)
4.5 Functional status 4 (FS4)
4.6 Functional status 5 (FS5)
5 Supply voltage range
13 6 Functional categories
14 7 Operating modes
8 General tests conditions
8.1 Standard tolerances
15 8.2 General values
8.3 Sampling rate and value resolution
8.4 Description of interfaces
8.5 Restrictions on performing the tests
8.6 Number of tested samples
8.7 Test voltages
16 8.8 Test procedure
8.9 Parameter check
17 8.10 Continuous parameter monitoring with drift analysis
8.11 Physical analysis
18 9 General requirements
9.1 General
9.2 Prerequisites regarding the system in which the component is applied
9.3 Component requirements
19 10 Tests and requirements
10.1 Test-01: nominal voltage range
10.1.1 Purpose
10.1.2 Test
10.1.3 Procedure
20 10.1.4 Requirement
10.2 Test-02: lower and upper transitory voltage ranges
10.2.1 Purpose
10.2.2 Test
21 10.2.3 Procedure
10.2.4 Requirement
22 10.3 Test-03: short term overvoltage
10.3.1 Purpose
10.3.2 Test
10.3.3 Procedure
23 10.3.4 Requirement
10.4 Test-04: supply component load dump control test
10.4.1 Purpose
10.4.2 Test
24 10.4.3 Procedure
10.4.4 Requirement
25 10.5 Test-05: starting profile
10.5.1 Purpose
10.5.2 Test
10.5.3 Procedure
26 10.5.4 Requirement
10.6 Test-06: long term overvoltage
10.6.1 Purpose
10.6.2 Test
27 10.6.3 Requirement
10.7 Test-07: overvoltage with consumer components which may supply electrical energy
10.7.1 Purpose
10.7.2 Test
30 10.7.3 Requirements for part 1 and part 2
10.8 Test-08: decrease and increase of supply voltage
10.8.1 Purpose
31 10.8.2 Test
10.8.3 Requirement
10.9 Test-09: voltage ripples
10.9.1 Purpose
32 10.9.2 Test
33 10.9.3 Requirement
10.10 Test-10: reinitialisation
10.10.1 Purpose
34 10.10.2 Test
10.10.3 Requirement
35 10.11 Test-11: discontinuities in supply voltage
10.11.1 Purpose
10.11.2 Test
36 10.11.3 Requirements
10.12 Test-12: ground loss
10.12.1 Purpose
40 10.12.2 Requirements
41 10.13 Test-13: fault current
10.13.1 Purpose
10.13.2 Test
42 10.13.3 Requirement
43 10.14 Test-14: ground offset
10.14.1 Purpose
10.14.2 Test
45 10.14.3 Requirement
10.15 Test-15: short circuit in signal line and load circuit
10.15.1 Purpose
10.15.2 Test
46 10.15.3 Procedure
10.15.4 Requirements
47 10.16 Test-16: quiescent current
10.16.1 Purpose
10.16.2 Test
48 10.16.3 Requirements
49 Annex A (informative) Example of functional status and functional categories
51 Annex B (informative) Loss of GND48 using the example CAN communication
BS ISO 21780:2020
$198.66