EN 1648-1:2018

Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 1: Caravans

This European Standard specifies safety, health and functional requirements for 12 V direct current (DC) extra low voltage (ELV) electrical installations for habitation aspects of caravans. It covers the design and integration of the caravan system with the towing vehicle system.
It does not apply to commercial trailers; nor does it include requirements for ELV road lighting and signalling lamps and their installations, except for safety requirements for the routing of cables in LPG storage compartments.
This European Standard also specifies the ELV output requirements of low voltage (LV) equipment that may be used to provide an ELV supply but it does not specify safety, technical and functional requirements for LV appliances and installations. Requirements for LV installations are specified in HD 60364 7 721.

Bewohnbare Freizeitfahrzeuge - Elektrische Anlagen für DC 12 V - Teil 1: Caravans

Diese Europäische Norm legt die sicherheitstechnischen, gesundheitlichen und funktionellen Anforderungen an elektrische Kleinspannungsanlagen (en: extra low voltage, ELV) DC 12 V im Wohnbereich von Caravans fest. Sie beinhaltet die Gestaltung des Caravansystems und seinen Anschluss an das System des Zugfahrzeugs.
Sie gilt nicht für kommerzielle Anhänger und enthält keine Anforderungen an Kleinspannungsleistungs-(ELV )Straßenlampen, Signallampen und deren Einbau, außer sicherheitstechnische Anforderungen an die Führung von Leitungen durch Schränke für die Lagerung von Flüssiggas.
Diese Europäische Norm legt auch die Anforderungen an die Kleinspannungsleistungsabgabe von Niederspannungs-(LV-)Geräten fest, die benutzt werden dürfen, um eine Kleinspannungsversorgung zu sichern, aber sie legt nicht die Sicherheitsanforderungen, technischen und funktionellen Anforderungen an Niederspannungsgeräte und  anlagen fest. Anforderungen an Niederspannungsanlagen sind in HD 60364-7-721 festgelegt.

Véhicules habitables de loisirs - Installations électriques à très basse tension de 12 V en courant continu - Partie 1: Caravanes

La présente Norme européenne spécifie les exigences en matière de sécurité, de santé et de fonctionnement s’appliquant aux installations électriques à très basse tension (TBT) de 12 V en courant continu (CC) utilisées dans la partie habitable des caravanes. Elle traite de la conception du système de la caravane et de son intégration au système du véhicule tracteur.
Elle ne s’applique pas aux remorques commerciales et ne contient aucune exigence relative aux dispositifs TBT de signalisation et d’éclairage routiers ni à leur installation, sauf pour les exigences de sécurité concernant l’acheminement des câbles à l’intérieur des compartiments de stockage de GPL.
La présente Norme européenne spécifie également les caractéristiques de sortie TBT des équipements basse tension (BT) pouvant être utilisés pour fournir une alimentation TBT, mais n’impose pas d’exigences en matière de sécurité ou de caractéristiques techniques et fonctionnelles s’appliquant aux appareils et installations BT. Les exigences relatives aux installations BT sont spécifiées dans la norme HD 60364-7-721.

Bivalna počitniška vozila - 12 V enosmerna električna napeljava male napetosti - 1. del: Počitniške prikolice

General Information

• Status: Published
• Publication Date: 16-Jan-2018
• Withdrawal Date: 30-Jul-2018
• ICS: 43.040.10 - Electrical and electronic equipment
• ICS: 43.100 - Passenger cars. Caravans and light trailers
• Technical Committee: CEN/TC 245 - Leisure accommodation vehicles
• Drafting Committee: CEN/TC 245/WG 6 - Habitation requirements relating to health and safety, and 12V direct current extra low voltage electrical installations
• Current Stage: 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
• Start Date: 14-Dec-2023
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 1648-1:2018 - Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 1: Caravans

Relations

• Replaces: EN 1648-1:2012 - Leisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 1: Caravans
• Effective Date: 08-Jun-2022

Overview

EN 1648-1:2018 is the CEN European Standard that defines safety, health and functional requirements for 12 V DC extra low voltage (ELV) electrical installations in caravans. It applies to habitation aspects of caravans and covers the design and integration of the caravan electrical system with the towing vehicle system. EN 1648-1:2018 supersedes EN 1648-1:2012 and is intended for manufacturers, designers, installers and inspectors working on caravan electrical installations, not commercial trailers or ELV road lighting (except for cable routing in LPG compartments).

Key topics and technical requirements

• Nominal supply: System nominal DC 12 V (minimum 11 V, maximum 15 V).
• Sources of supply: Towing vehicle supply, onboard auxiliary batteries, AC/DC converters (transformer/rectifier), DC generators and regenerative sources - with rules to prevent undesirable interactions between sources.
• Auxiliary batteries:
  • Must be rechargeable and securely installed.
  • Terminals clearly marked for polarity and insulated unless covered.
  • Located in a ventilated, electrolyte-resistant compartment or provided with sealed/vented battery arrangements.
  • Drain/containment tray required for batteries whose electrolyte can flow (tray capacity ≥ 20% of electrolyte capacity).
  • Minimum compartment ventilation: at least 80 mm² low-level and 80 mm² high-level vents; lids sealed if opening to the habitable space.
  • Warning notice requirements and user handbook instructions for battery installation and maintenance.
• Wiring and cable routing:
  • Requirements for connection to towing vehicle (connector contact allocation, cable protection when disconnected).
  • Minimum cable cross-sectional areas and guidance for voltage drop (Annex A contains graphs/calculation methods).
  • Special routing/protection rules for LPG storage compartments.
• Protection:
  • Overcurrent protection of positive conductors (fuses/circuit-breakers) with installation and prohibited location guidance.
  • Requirements for fuse types and installation practices.
• Appliances and fittings:
  • Socket outlets, battery chargers, lighting, and manufacturer connection points; functional and safety integration with LV supplies addressed but LV appliance standards are specified elsewhere.

Applications and users

Who uses EN 1648-1:2018:

• Caravan manufacturers and OEMs for product design and compliance.
• Electrical system designers and wiring harness suppliers.
• Installation technicians and after‑sales service teams.
• Certification bodies, test labs and conformity assessors. Practical uses: designing safe 12 V DC systems, specifying auxiliary battery compartments, sizing cables, selecting overcurrent protection, and preparing user handbooks and warning labels.

Related standards

• EN 13878 (terms and definitions)
• HD 60364-7-721 (LV installation requirements)
• EN 50525, ISO 6722 (cables)
• EN 60529 (IP codes), EN 60898-2 (circuit-breakers)
• ISO 11446-1 (13‑pole towing connectors)
• ISO 8820 series (vehicle fuses)

Keywords: EN 1648-1:2018, 12 V DC, extra low voltage, caravan electrical installations, auxiliary battery compartment, cable routing, overcurrent protection, leisure accommodation vehicles.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bewohnbare Freizeitfahrzeuge - Elektrische Anlagen für DC 12 V - Teil 1: CaravansVéhicules habitables de loisirs - Installations électriques à très basse tension de 12 V en courant continu - Partie 1 : CaravanesLeisure accommodation vehicles - 12 V direct current extra low voltage electrical installations - Part 1: Caravans43.100Osebni avtomobili. Bivalne prikolice in lahke prikolicePassenger cars. Caravans and light trailers43.040.10RSUHPDElectrical and electronic equipmentICS:Ta slovenski standard je istoveten z:EN 1648-1:2018SIST EN 1648-1:2018en,fr,de01-marec-2018SIST EN 1648-1:2018SLOVENSKI
STANDARDSIST EN 1648-1:20121DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1648-1
January
t r s z ICS
v uä r v rä s râ
v uä s r r Supersedes EN
s x v zæ sã t r s tEnglish Version
Leisure accommodation vehicles æ
s t V direct current extra low voltage electrical installations æ Part
sã CaravansVéhicules habitables de loisirs æ Installations électriques à très basse tension de
s t V en courant continu æ Partie
sã Caravanes
Bewohnbare Freizeitfahrzeuge æ Elektrische Anlagen für DC
s t V æ Teil
sã Caravans This European Standard was approved by CEN on
t r November
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x v zæ sã t r s z ESIST EN 1648-1:2018

Relation of cable cross-sectional area, current flow and cable length for fixed wiring installations . 14 A.1 General . 14 A.2 Graphs for obtaining minimum cross-sectional areas . 14 A.3 Calculation of the minimum cross-sectional areas . 15 Bibliography . 17
Figure 1 — Overview of relevant European Standards applying to leisure accommodation vehicles SIST EN 1648-1:2018

IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp 4 Power supply 4.1 General The power supply shall be a nominal DC 12 V (minimum 11 V and maximum 15 V). 4.2 Sources of supply The supply shall be obtained from one or more of the following sources: a) the electrical installation of the towing vehicle; b) an auxiliary battery mounted within the caravan (see 4.3); c) LV supply via an on-board mounted AC/DC converter (e.g. transformer, switching power supply) that complies with the requirements of the relevant standards in accordance with Directive 2014/35/EU and subsequent amendments; d) DC generator (see 4.4.1); e) regenerative energy sources (see 4.4.2). If several sources of supply are used it shall be ensured that there is no unfavourable interaction. 4.3 Auxiliary batteries 4.3.1 Type of battery An auxiliary battery shall be of the rechargeable type. 4.3.2 Terminals Auxiliary battery terminals shall be clearly and durably marked ò ªó and ò «òä Connections to auxiliary battery terminals shall be securely clamped or bolted to ensure continuous contact and shall be insulated unless the auxiliary battery is provided with an insulating cover. 4.3.3 Location An auxiliary battery shall be placed in a compartment according to 4.3.5, which is designed to protect it from mechanical damage, with easy access for maintenance and/or removal and secured to prevent movement of the battery, e.g. when the caravan is in motion. 4.3.4 Caravans without auxiliary battery If an auxiliary battery is intended to be used but not provided, then the position and instructions for the installation shall be included in the user's handbook according to Clause 8 and a notice shall be fixed in its compartment or near the proposed location. If a caravan is not designed to accept an auxiliary battery, it shall be clearly stated in the user's handbook. SIST EN 1648-1:2018
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