ISO 16750-5:2010

Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 5: Chemical loads

ISO 16750-5:2010 applies to electrical and electronic systems/components for road vehicles. ISO 16750-5:2010 describes the potential environmental stresses and specifies tests and requirements recommended for the specific mounting location on/in the road vehicle. ISO 16750-5:2010 describes chemical loads. It is not designed to evaluate whether an electrical/electronic system/component is suitable for performing during continuous contact with an agent, such as a fuel pump immersed continuously in fuel.

Véhicules routiers — Spécifications d'environnement et essais de l'équipement électrique et électronique — Partie 5: Contraintes chimiques

General Information

• Status: Withdrawn
• Publication Date: 05-Apr-2010
• ICS: 43.040.10 - Electrical and electronic equipment
• Technical Committee: ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
• Drafting Committee: ISO/TC 22/SC 32/WG 2 - Environmental conditions

Relations

• Revised: ISO 16750-5:2023 - Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 5: Chemical loads
• Effective Date: 23-Apr-2020
• Revises: ISO 16750-5:2003 - Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 5: Chemical loads
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 16750-5
Second edition
2010-04-15
Road vehicles — Environmental
conditions and testing for electrical and
electronic equipment —
Part 5:
Chemical loads
Véhicules routiers — Spécifications d'environnement et essais de
l'équipement électrique et électronique —
Partie 5: Contraintes chimiques

Reference number
©
ISO 2010
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ii © ISO 2010 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16750-5 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3,
Electrical and electronic equipment.
This second edition cancels and replaces the first edition (ISO 16750-5:2003), which has been technically
revised.
ISO 16750 consists of the following parts, under the general title Road vehicles — Environmental conditions
and testing for electrical and electronic equipment:
⎯ Part 1: General
⎯ Part 2: Electrical loads
⎯ Part 3: Mechanical loads
⎯ Part 4: Climatic loads
⎯ Part 5: Chemical loads
INTERNATIONAL STANDARD ISO 16750-5:2010(E)

Road vehicles — Environmental conditions and testing for
electrical and electronic equipment —
Part 5:
Chemical loads
1 Scope
This part of ISO 16750 applies to electrical and electronical systems/components for road vehicles. This part
of ISO 16750 describes the potential environmental stresses and specifies tests and requirements
recommended for the specific mounting location on/in the road vehicle.
This part of ISO 16750 describes chemical loads. It is not designed to evaluate whether an
electrical/electronic system/component is suitable for performing during continuous contact with an agent,
such as a fuel pump immersed continuously in fuel.
NOTE Conditions and testing for a continuous contact can be determined from other standards or agreed upon
between customer and supplier.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 16750-1, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 1: General
ISO 16750-4, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 4: Climatic loads
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16750-1 apply.
4 Tests
4.1 General
Components and associated parts that can come into contact with the specified chemical agents shall be
resistant to those agents. The components and associated parts shall be tested with all agents they are likely
to come into contact with, except for those materials which can be shown by documentary evidence to be
immune to the contaminant and which need not be tested.
A material is considered to be immune to a contaminant if there is no change in properties sufficient to affect
material performances over the time and at the temperature specified in this clause.
Manufacturer and type of chemical agents shall be agreed upon between supplier and vehicle manufacturer.
Resistance to the specified chemical agents shall be considered as early as during the material selection
process.
4.2 Purpose
The purpose of the test is to determine whether the device under test (DUT) is unacceptably affected by
temporary exposure to contaminating agents.
NOTE This test is not intended to be a life test.
4.3 General test conditions
Chemical agents shall be selected in accordance with Table 1, depending on the mounting location of the
DUT.
Unless otherwise specified, one DUT per test agent shall be used. The DUTs shall be tested with all agents
they are likely to come into contact with, except for those materials which can be shown by documentary
evidence to be immune to the contaminant and which need not be tested.
The following tests describe one test cycle. Unless otherwise specified, one test cycle with one agent per DUT
shall be performed. Any other number of cycles may be agreed between customer and supplier.
NOTE If the size of the DUT is sufficient, multiple test agents can be applied partially on one DUT if it is ensured that
these do not have any influence on each other.
4.4 DUT conditioning
Unless otherwise specified, the DUT shall be stored at a room temperature (RT) of (23 ± 5) °C and a relative
humidity (RH) of between 25 % and 75 % until temperature and humidity are stabilized.
The DUT shall be tested under conditions of normal use. If necessary, and unless otherwise specified,
unrepresentative coatings or contaminations of the DUT shall be removed.
If a cleaning procedure is needed, the methodology shall be agreed between customer and supplier.
4.5 Test agent conditioning
Unless otherwise specified, all test agents shall be stabilized at an RT of (23 ± 5) °C when applied on the DUT.
4.6 Application method
Unless otherwise specified, application shall be performed at an RT of (23 ± 5) °C and an RH of between
45 % and 75 %.
It shall be ensured by the choice of the application method that the DUT is sufficiently wetted by the test agent
in the areas to be tested. The application method shall be chosen in accordance with Table 2, depending on
the agent and the mounting location of the DUT.
The preferred application methods are given in Table 1.
4.7 Test conditions
Unless otherwise specified, the exposure of the DUT to the agent applied shall be performed at the
temperature and for the duration specified in Table 1.
2 © ISO 2010 – All rights reserved

Table 1 — Chemical loads for equipment depending on the mounting location and test conditions
Exposure
a
Mounting location [code]
conditions
Chemical
Mounting Other Test
ID
Engine Passenger Luggage
agents
on the require- tempe-
Test
compartment compartment compartment
exterior ments rature
duration
...