ISO 8820-5:2015

INTERNATIONAL ISO
STANDARD 8820-5
Second edition
2015-03-15
Road vehicles — Fuse-links —
Part 5:
Fuse-links with axial terminals (Strip
fuse-links) Types SF 30 and SF 51 and
test fixtures
Véhicules routiers — Liaisons fusibles —
Partie 5: Liaisons fusibles avec languettes axiales (liaisons fusibles
électriques) des types SF 30 et SF 51, et montages d’essai
Reference number
©
ISO 2015
© ISO 2015
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Published in Switzerland
ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking, labelling, and colour coding . 1
5 Tests and requirements . 2
5.1 General . 2
5.1.1 General test conditions . 2
5.1.2 Test sequence . . . 3
5.1.3 Test cable sizes . 3
5.2 Voltage drop . 4
5.2.1 Purpose . 4
5.2.2 Test . 4
5.2.3 Requirement . 4
5.3 Transient current cycling . 5
5.3.1 Purpose . 5
5.3.2 Test . 5
5.3.3 Requirement . 6
5.4 Environmental conditions . 6
5.5 Operating time rating . 6
5.5.1 Purpose . 6
5.5.2 Test . 6
5.5.3 Requirements . 6
5.6 Current steps . 7
5.6.1 Purpose . 7
5.6.2 Test . 7
5.6.3 Requirements . 7
5.7 Breaking capacity . 7
5.7.1 Purpose . 7
5.7.2 Test . 7
5.7.3 Requirement . 8
5.8 Strength of terminals . 8
5.8.1 Purpose . 8
5.8.2 Test . 8
5.8.3 Requirement . 8
6 Dimensions and designation examples . 9
6.1 Type SF 30 . 9
6.1.1 Dimensions . 9
6.1.2 Designation example . 9
6.2 Type SF 51 .10
6.2.1 Dimensions .10
6.2.2 Designation example .10
7 Test fixture .10
7.1 General .10
7.2 Materials and dimensions .10
Bibliography .15
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary Information
The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 3, Electric
and electronic equipment.
This second edition cancels and replaces the first edition (ISO 8820-5:2007), which has been
technically revised.
ISO 8820 consists of the following parts, under the general title Road vehicles — Fuse-links:
— Part 1: Definitions and general test requirements
— Part 2: User guidelines
— Part 3: Fuse-link with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)
— Part 4: Fuse-links with female contacts (type A) and bolt-in contacts (type B) and their test fixtures
— Part 5: Fuse-links with axial terminals (Strip fuse-links) Types SF 30 and SF 51 and test fixtures
— Part 6 Single-bolt fuse-links
— Part 7: Fuse-links with tabs (Type G) with rated voltage of 450 V
— Part 8: Fuse-links with bolt-in contacts (Type H and J) with rated voltage of 450 V
— Part 9: Fuse-links with shortened tabs (Type K)
— Part 10: Fuse-links with tabs Type L (high current miniature)
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 8820-5:2015(E)
Road vehicles — Fuse-links —
Part 5:
Fuse-links with axial terminals (Strip fuse-links) Types SF
30 and SF 51 and test fixtures
1 Scope
This part of ISO 8820 specifies fuse-links with axial terminals (Strip fuse-links) Type SF 30 and SF 51
and test fixtures for fuses in road vehicles. It establishes, for these fuse-link types, the rated current, test
procedures, performance requirements, and dimensions.
This part of ISO 8820 is applicable to fuse-links with a rated voltage of 32 V, a current rating of 30 A to
500 A, and a breaking capacity of 2 000 A intended for use in the electrical system of road vehicles with
a nominal voltage of 12 V and/or 24 V.
This part of ISO 8820 is intended to be used in conjunction with ISO 8820-1 and with ISO 8820-2. The
numbering of its Clauses corresponds to that of
...