Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (ISO 8846:1990)

Describes test methods and requirements for the design of electrical devices to be used on small craft so that they may be operated in an explosive atmosphere without igniting surrounding flammable gases.

Kleine Wasserfahrzeuge - Elektrische Geräte - Zündschutz gegenüber entflammbaren Gasen (ISO 8846:1990)

Navires de plaisance - Équipements électriques - Protection contre l'inflammation des gaz inflammables environnants (ISO 8846:1990)

La présente Norme internationale prescrit les méthodes d'essai et fixe les prescriptions de conception relatives aux équipements électriques installés sur des navires de plaisance et devant être utilisés en atmosphère explosive sans risquer de provoquer l'explosion des gaz inflammables environnants. Elle n'est pas applicable aux systèmes antidéflagrants ou aux appareillages électriques protégés contre l'explosion tels que définis dans la CEI 79-0. [1] La présente Norme internationale ne traite pas des procédures de protection contre la détérioration des produits ou des éléments fonctionnant dans des mélanges d'hydrogène et d'air. Elle ne traite pas non plus des mécanismes d'inflammation par sources extérieures du type électricité statique, foudre ou autres facteurs non liés à l'appareillage essayé.

Mala plovila - Električne naprave - Varovanje pred vžigom gorljivih plinov v okolici (ISO 8846:1990)

Opisuje preskusne metode in zahteve za načrtovanje električnih naprav, ki se uporabljajo na majhnih plovilih, tako da se lahko uporabljajo v eksplozivnem ozračju brez vžiga okoliških vnetljivih plinov.

General Information

Status
Published
Public Enquiry End Date
21-Jun-2017
Publication Date
11-Sep-2017
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Sep-2017
Due Date
10-Nov-2017
Completion Date
12-Sep-2017

Relations

Effective Date
30-Aug-2017
Effective Date
30-Aug-2017
Effective Date
21-Jun-2023
Effective Date
15-Jun-2016
Effective Date
15-Jun-2016

Overview

EN ISO 8846:2017 - "Small craft - Electrical devices - Protection against ignition of surrounding flammable gases" (ISO 8846:1990 adopted by CEN) specifies test methods and design requirements so electrical equipment used on small craft can be operated in potentially explosive atmospheres without igniting surrounding flammable gases. It defines practical ignition‑protection tests (surface temperature, sealed and non‑sealed device tests) and is intended to support conformity with EU Directive 2013/53/EU for pleasure craft components.

Key topics and technical requirements

  • Scope and exclusions
    • Covers electrical devices intended for small craft and protection against surrounding hydrocarbon fuel/air atmospheres (propane–air mixtures between the LEL and UEL).
    • Does not require explosion‑proof apparatus as defined by IEC 79‑0 and does not address ignition mechanisms from external sources (static, lightning) or hydrogen/oxygen mixtures from vented batteries.
  • External surface temperature test
    • Devices are operated in a circulating oven (initial temperature 60 °C ± 2 °C) for at least 7 hours at the worst‑case operating condition.
    • Test voltage = 80 % to 120 % of nominal system voltage producing the greatest temperature rise.
    • Maximum allowable external surface temperature = 200 °C at any point.
  • Sealed device test (clause 5)
    • Submerge device in a water chamber to check for leakage (15 minutes per attitude).
    • If no water ingress is found after dismantling, the device is accepted as sealed and ignition‑protected.
    • If ingress occurs, the device must be tested as non‑sealed.
  • Non‑sealed device test (clause 6)
    • Uses a test chamber with a propane–air mixture (representative marine fuel/air concentration; mixture guidance in the standard).
    • Electrical device is supplied with the explosive mixture via tubing/vent and a spark gap or spark‑plug simulates internal sparking.
    • Procedure requires multiple ignition cycles and verification that chamber ignition does not occur from the device; failures require purging and retesting.

Applications and users

  • Who uses it: marine electrical equipment designers, small craft engine and accessory manufacturers, conformity assessors, test laboratories, certification bodies, boat builders and safety regulators.
  • Practical use cases: designing ignition‑protected starters, switches, pumps and instruments; type‑testing components for inboard engine compartments, petrol tank spaces and other fuel‑exposed zones; demonstrating conformity with EU Directive 2013/53/EU.

Related standards

  • ISO 8846:1990 (original text adopted)
  • Supersedes EN 28846:1993
  • References/exclusions: IEC 79‑0 (explosion‑proof apparatus) and EU Directive 2013/53/EU (essential requirements)

EN ISO 8846:2017 is fundamental for ensuring electrical devices for small craft do not act as ignition sources in flammable gas atmospheres - essential for marine safety, regulatory compliance and product certification.

Standard

SIST EN ISO 8846:2017

English language
14 pages
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Frequently Asked Questions

SIST EN ISO 8846:2017 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (ISO 8846:1990)". This standard covers: Describes test methods and requirements for the design of electrical devices to be used on small craft so that they may be operated in an explosive atmosphere without igniting surrounding flammable gases.

Describes test methods and requirements for the design of electrical devices to be used on small craft so that they may be operated in an explosive atmosphere without igniting surrounding flammable gases.

SIST EN ISO 8846:2017 is classified under the following ICS (International Classification for Standards) categories: 13.220.20 - Fire protection; 47.020.60 - Electrical equipment of ships and of marine structures; 47.080 - Small craft. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN ISO 8846:2017 has the following relationships with other standards: It is inter standard links to SIST EN 28846:2000, SIST EN 28846:2000/A1:2001, kSIST FprEN ISO 8846:2025, SIST EN 28846:2000, SIST EN 28846:2000/A1:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN ISO 8846:2017 is associated with the following European legislation: EU Directives/Regulations: 2013/53/EU; Standardization Mandates: M/542. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

You can purchase SIST EN ISO 8846:2017 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-oktober-2017
1DGRPHãþD
SIST EN 28846:2000
SIST EN 28846:2000/A1:2001
0DODSORYLOD(OHNWULþQHQDSUDYH9DURYDQMHSUHGYåLJRPJRUOMLYLKSOLQRYYRNROLFL
,62
Small craft - Electrical devices - Protection against ignition of surrounding flammable
gases (ISO 8846:1990)
Kleine Wasserfahrzeuge - Elektrische Geräte - Zündschutz gegenüber entflammbaren
Gasen (ISO 8846:1990)
Navires de plaisance - Équipements électriques - Protection contre l'inflammation des
gaz inflammables environnants (ISO 8846:1990)
Ta slovenski standard je istoveten z: EN ISO 8846:2017
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
47.020.60 (OHNWULþQDRSUHPDODGLMLQ Electrical equipment of ships
NRQVWUXNFLMQDPRUMX and of marine structures
47.080 ýROQL Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8846
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2017
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN 28846:1993
English Version
Small craft - Electrical devices - Protection against ignition
of surrounding flammable gases (ISO 8846:1990)
Navires de plaisance - Équipements électriques - Kleine Wasserfahrzeuge - Elektrische Geräte -
Protection contre l'inflammation des gaz inflammables Zündschutz gegenüber entflammbaren Gasen (ISO
environnants (ISO 8846:1990) 8846:1990)
This European Standard was approved by CEN on 23 July 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8846:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2013/53/EU . 4

European foreword
The text of ISO 8846:1990 has been prepared by Technical Committee ISO/TC 188 “Small craft” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 8846:2017.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2018, and conflicting national standards shall
be withdrawn at the latest by February 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 28846:1993.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
Endorsement notice
The text of ISO 8846:1990 has been approved by CEN as EN ISO 8846:2017 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2013/53/EU
This European standard has been prepared under a mandate given to CEN by the European Commission
to provide one means of conforming to Essential Requirements of the New Approach Directive
2013/53/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one member state, compliance with the normative clauses
of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption
of conformity with the relevant Essential Requirements of that Directive and associated EFTA
regulations.
Table ZA.1 — Correspondence between this European Standard and Directive 2013/53/EU
Clauses/subclauses of this European Essential requirements Qualifying
Standard (ERs) of EU Directive remarks/Notes
2013/53/EU
All clauses I.A.5.1.1 – Inboard engine In respect of electrical
devices that may be
mounted on an inboard
engine or in an engine
enclosure in order to
minimise the risk of fire.
This Standard does not deal
with accessibility of these
devices in order to enable
frequent inspection and/or
servicing.
This Standard does not deal
with insulating materials
inside the engine
compartment.
All Clauses I.A.5.2.2(a) - Fuel tanks In respect of protection
from electrical devices as
sources of ignition which
are located in fuel tank
compartments.
All Clauses 1.A.5.3 – Electrical system This Standard does not
cover ignition protection for
electrical devices that may
operate in hydrogen and
oxygen mixtures produced
by vented batteries gases
escaping into the
surrounding atmosphere.
All Clauses Annex II, Components of
watercraft
(1) Ignition protected
equipment for inboard and
stern drive petrol engines
and petrol tank spaces
WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard

First edition
1990-l 2-01
Electrical devices - Protection
Small craft -
against ignition of surrounding flammable gases
&wires de plaisance - k!Cquipements 6lectriques --- Protection contre
I’inflamma tion des gaz inf7ammables environnan ts
--
Reference number
IS0 8846: 1990(E)
-__I
IS0 8846:1990(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been establishetl has the right to be
represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the
work. IS0 collaborates closely with the InternatL3nal Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an lnter-
national Standard req:lires approval by at least 75 % of the member
bodies casting a vote.
International Standard IS0 8846 was prepared by Technical Committee
ISO/TC 188, Small craft.
Annex A of this International Standard is for information only.
0 IS0 1990
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without
permission in writing from the publisher.
international Organization for Standardization
Case Postale 56 @ Cl-l-1241 Geneve 20 l Switzerland
Printed in Switzerland
ii
--
INTERNATIONAL §TANDARD IS0 8846:1990(E)
Small craft - Electrical Protection against ignition
of surrounding flammable gases
2.4 normal operating conditions: Any operating
1 Scope
conditions of the device, including the maximum
achievable overload up to 400 % of the rated current
This International Standard describes test methods
(circuit breakers, switches and the like) and a stalled
and requirements for the design of electrical devices
rotor condition for any motor with the circuit pro-
to be used on small craft so that they may be oper-
tected by an overcurrent protective device specified
ated in an explosive atmosphere without igniting
by the product manufacturer.
surrounding flammable gases. It does not require
explosion-proof or explosion-protected electrical
apparatus as defined in IEC 79-O. [II
3 Test programme
This International Standard does not cover ignition
protection procedures for products or components
3.1 The external surface temperature test shall be
that may operate in hydrogen and air mixtures. Nor
carried out according to clause 4.
does it cover mechanisms of ignition from external
sources, such as static electricity, lightning or other
3.2 Electrical devices which can generate sparks
factors not related to the apparatus under test.
or arcs under operation (switches, relays, gener-
ators, fuses, distributors, cranking motors, etc.) shall
be tested according to clause 5 if they can be con-
2 Definitions
sidered sealed and according to clause 6 if they are
non-sealed.
For the purposes of this International Standard, the
following definitions apply.
3.3 Electrical devices showing an increase of the
external surface temperature of more than 100 “C
2.1 flammable hydrocarbon mixture: Mixture of
above ambient under operation shall be tested ac-
propane and air (per cent by volume) between the
cording to clause 4. Electrical devices not rated for
Lower Explosive Limit (LEL) and Upper Explosive
continuous operation and wired with momentarily
Limit (UEL) that will explode if ignited by any means.
operated switches, such as engine-cranking motors,
Tests using propane and air are considered to cover
propulsion unit trim motors and other intermittently
marine fuel and air mixtures between the LE
...

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