ISO 8820-2:2014

Name: ISO 8820-2:2014 — Road vehicles — Fuse-links — Part 2: User guidelines
SKU: ISO 8820-2:2014
Price: 25 EUR
Availability: InStock

Road vehicles — Fuse-links — Part 2: User guidelines

Название (английский):

ISO 8820-2:2014

Road vehicles — Fuse-links — Part 2: User guidelines

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 13 февраля 2014 г.
Издание:: ISO IS 8820 edition 3 version 1
ICS:: 43.040.10

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Описание (английский):

ISO 8820-2:2014 gives guidance for the choice and application of automotive fuse-links which are defined in the other parts of the ISO 8820 series. It describes the various parameters which have to be taken into account when selecting fuse-links. Fuse-links according to ISO 8820 are intended for electrical cable protection. If these types of fuse-links are to be used for electrical component protection, it should be agreed between customer and supplier. ISO 8820-2:2014 is intended to be used in conjunction with the other parts of ISO 8820.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 8820-2:2014 - "Road vehicles - Fuse-links - Part 2: User guidelines" provides practical guidance for selecting and applying automotive fuse-links defined in the ISO 8820 series. It is intended to be used together with the other parts of ISO 8820 and focuses on fuse-links intended primarily for electrical cable protection. (Use of ISO 8820 fuse‑links for direct component protection requires agreement between customer and supplier.)

Key topics and requirements

Rated voltage vs system voltage: select a fuse rated above the vehicle nominal voltage to allow for overvoltage conditions.

Rated current and continuous current: distinguishes fuse rated current (identification) from the actual continuous current in the circuit; continuous current must be lower than fuse rated current.

Cold resistance: cold resistance affects voltage drop, power dissipation and time‑current behaviour; production spread leads to variation in fusing time and voltage drop.

Time–current characteristics: match fuse time‑current curves to cable heating curves so the fuse opens before cable temperature limits are exceeded.

Cable protection rules: guidance and charts (Annex B) for choosing fuse rating and cable cross‑section to ensure cables are protected under overcurrent conditions.

Selectivity (discrimination): ensure higher‑level fuses do not trip when lower‑level fuses operate - maintain system hierarchy for fault isolation.

Inrush and stall currents: account for device inrush energy and motor stall currents; select fuses that withstand inrush without nuisance opening.

Voltage transients on opening: opening a fuse can produce high voltage peaks (document notes peaks may approach 10× rated voltage depending on circuit impedance).

Connection/contact resistance and ambient temperature: terminal resistance, fuse holders, ambient conditions and installation orientation affect continuous current capability and temperature rises.

Replacement safety: replacement of fuse‑links should be performed with the circuit de‑energised.

EMC: electromagnetic compatibility testing for fuse-links is not required by this part.

Practical applications and users

Automotive electrical/electronic engineers specifying protection for wiring harnesses

Vehicle manufacturers (OEMs) and tier suppliers selecting fuses and fuse holders

Fuse manufacturers and component suppliers providing product guidance

Maintenance and service technicians who replace or audit vehicle fuses

Typical uses:

Sizing fuse‑links to protect cables and prevent overheating

Defining fuse selection rules for fuse boxes and power distribution

Ensuring correct coordination/selectivity across multiple protection levels

Validating fuse selection against inrush, ambient temperature and installation constraints

Related standards

Use ISO 8820-2 with the rest of ISO 8820 series, e.g.:

ISO 8820-1 - Definitions and general test requirements (normative reference)

ISO 8820-3…9 - Specific fuse types and test fixtures (blade, bolt-in, strip, high-voltage types, miniature types)

Keywords: ISO 8820-2:2014, fuse-links, automotive fuse-links, road vehicles, cable protection, time-current characteristics, rated current, cold resistance, inrush current, selectivity.

ISO 8820-2:2014

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications and users

Related standards

Технические детали

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