EN 17404:2022

Cycles - Electrically power assisted cycles - EPAC Mountain bikes

For the purpose of this document the scope of EN 15194:2017 is applicable with the following addition.
This document specifies specific requirements applicable to EPAC Mountain bikes.
EPAC-MTB category 5 according to EN 17406:2020+A1:2021, Table 1 is not covered by this document.

Fahrräder - Elektromotorisch unterstützte Räder - EPAC Mountainbikes

Für die Anwendung dieses Dokuments gilt der Anwendungsbereich von EN 15194:2017 mit folgender Ergänzung.
Dieses Dokument enthält spezielle Anforderungen an EPAC Mountainbikes.
EPAC MTB Kategorie 5 nach EN 17406:2020+A1:2021, Tabelle 1, wird in diesem Dokument nicht behandelt.

Cycles - Cycles à assistance électrique - Bicyclettes tout terrain EPAC

Pour les besoins du présent document, le champ d’application de l’EN 15194 est applicable avec l’ajout suivant.
Le présent document spécifie les exigences particulières applicables aux bicyclettes tout terrain EPAC.
La catégorie 5 des bicyclettes tout terrain EPAC selon l’EN 17406:2020+A1:2021, Tableau 1 n'est pas couverte par le présent document.

Kolesa - Kolesa z električnim pomožnim pogonom - Gorska kolesa EPAC

Za namene tega dokumenta se uporablja področje uporabe standarda EN 15194:2017 z naslednjim dodatkom. Ta dokument določa posebne zahteve, ki veljajo za gorska kolesa s podpornim elektromotorjem (gorska kolesa EPAC). 5. kategorija EPAC-MTB v skladu s standardom EN 17406:2020+A1:2021, preglednica 1, ni zajeta v tem dokumentu.

General Information

• Status: Published
• Publication Date: 10-May-2022
• Withdrawal Date: 29-Nov-2022
• ICS: 43.120 - Electric road vehicles
• ICS: 43.150 - Cycles
• Technical Committee: CEN/TC 333 - Cycles
• Drafting Committee: CEN/TC 333/WG 5 - Electric power assisted cycles
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 11-May-2022
• Due Date: 28-Dec-2020
• Completion Date: 11-May-2022
• Directive: 2001/95/EC - Directive 2001/95/EC of the European Parliament and of the Council of 3 December 2001 on general product safety
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: SIST EN 17404:2022 - Cycles - Electrically power assisted cycles - EPAC Mountain bikes

Overview - EN 17404:2022 (EPAC Mountain bikes)

EN 17404:2022 is a CEN European standard that specifies additional safety and testing requirements for EPAC Mountain bikes (EPAC‑MTB). It is intended to be used in conjunction with EN 15194:2017 (the general EPAC / electrically power assisted cycles standard) and adapts or supplements that standard where mountain‑bike specific requirements are needed. The scope covers EPACs designed for off‑road and mixed use (strengthened frames, wide‑section tyres and wide gear ranges). EPAC‑MTB category 5 (EN 17406:2020+A1:2021) is explicitly excluded.

Key topics and technical requirements

• Relation to EN 15194: EN 17404 modifies, replaces or adds clauses of EN 15194:2017 to make them applicable to mountain e‑bikes. Where a subclause is not mentioned, EN 15194:2017 applies.
• Electrical requirements: covers electric circuits, controls and symbols, batteries, battery chargers, cabling and connectors, wiring, power cables, power management, EMC and anti‑tampering measures. Voltage is limited to 48 V DC (noting reduced electrical hazard requirements).
• Moisture resistance: assembled EPACs must meet IPX5 requirements per EN 60529 for electrical component ingress protection.
• Mechanical requirements: includes frames, forks, wheels, rims/tyres, brakes, steering, pedals, drive systems (chain/belt), saddles and seat‑posts, fasteners, protrusions and thermal hazards.
• Testing: mechanical strength tests, road testing of fully assembled EPAC‑MTBs, durability of marking/labels, and specific component test methods referenced to EN ISO 4210 series.
• Risk management: developed as a Type C standard under EN ISO 12100:2010; manufacturers must perform risk assessments and provide means to prevent unauthorized use (keys, locks, electronic controls).
• Limitations noted: battery and vibration issues are excluded pending further TC333 work; manufacturers should address known real‑world scenarios (e.g., battery‑holder damage in side falls) via risk assessment until next revision.

Applications - who uses EN 17404:2022

• Manufacturers and designers of mountain e‑bikes (EPAC‑MTB) for design validation and product safety compliance
• Test laboratories and conformity assessors conducting mechanical, electrical and ingress protection tests
• Regulatory bodies and procurement teams requiring evidence of compliance for market access in CEN member countries
• OEM suppliers of batteries, motors, frames and components aligning parts to EPAC‑MTB requirements
• Safety engineers and technical writers preparing declarations of conformity, user instructions and labeling

Related standards

• EN 15194:2017 - Cycles - Electrically power assisted cycles (base EPAC standard)
• EN 60529 - Degrees of protection by enclosures (IP code)
• EN ISO 4210 series - Bicycle safety and test methods (frames, forks, steering, pedals, saddles)
• EN 17406:2020+A1:2021 - EPAC categories (reference for category exclusions)

EN 17404:2022 is essential for anyone involved in designing, testing or selling mountain e‑bikes in Europe who needs to demonstrate compliance with EPAC‑MTB specific safety and test requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2022
Kolesa - Kolesa z električnim pomožnim pogonom - Gorska kolesa EPAC
Cycles - Electrically power assisted cycles - EPAC Mountain bikes
Fahrräder - Elektromotorisch unterstützte Räder - EPAC Mountainbikes
Cycles - Cycles à assistance électrique - Bicyclettes tout terrain EPAC
Ta slovenski standard je istoveten z: EN 17404:2022
ICS:
43.120 Električna cestna vozila Electric road vehicles
43.150 Kolesa Cycles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17404
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 43.120; 43.150
English Version
Cycles - Electrically power assisted cycles - EPAC Mountain
bikes
Cycles - Cycles à assistance électrique - Bicyclettes tout Fahrräder - Elektromotorisch unterstützte Räder -
terrain EPAC EPAC Mountainbikes
This European Standard was approved by CEN on 27 March 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17404:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Safety requirements and/or protective measures . 7
4.1 General . 7
4.2 Electrical requirements . 7
4.2.1 Electric circuit . 7
4.2.2 Controls and symbols . 7
4.2.3 Batteries . 7
4.2.4 Battery charger . 7
4.2.5 Electric cables and connections . 7
4.2.6 Wiring . 7
4.2.7 Power cables and conduits . 7
4.2.8 External and internal electrical connections . 7
4.2.9 Moisture resistance . 7
4.2.10 Mechanical strength test . 7
4.2.11 Maximum speed for which the electric motor gives assistance . 8
4.2.12 Start-up assistance mode . 8
4.2.13 Power management . 8
4.2.14 Maximum power measurement – measurement at engine shaft . 8
4.2.15 Electromagnetic Compatibility . 8
4.2.16 Failure mode . 8
4.2.17 Anti-tampering measure . 8
4.3 Mechanical requirements . 8
4.3.1 General . 8
4.3.2 Sharp edges . 8
4.3.3 Security and strength of safety-related fasteners . 8
4.3.4 Protrusions . 8
4.3.5 Brakes. 8
4.3.6 Steering . 9
4.3.7 Frames . 10
4.3.8 Front fork . 11
4.3.9 Wheels and wheel/tyre assembly . 11
4.3.10 Rims, tyres and tubes . 11
4.3.11 Front mudguard . 11
4.3.12 Pedals and pedal/crank drive system . 11
4.3.13 Drive-chain and drive belt . 12
4.3.14 Chain-wheel and belt-drive protective device . 12
4.3.15 Saddles and seat-posts . 12
4.3.16 Spoke protector . 12
4.3.17 Luggage carriers . 12
4.3.18 Road-test of a fully-assembled EPAC . 12
4.3.19 Lighting systems and reflectors . 12
4.3.20 Warning device . 12
4.3.21 Thermal hazards . 12
4.3.22 Performance levels (PLrs) for control system of EPACs . 12
4.4 List of significant hazards . 13
5 Marking, labelling . 13
5.1 Requirement . 13
5.2 Durability test . 14
5.2.1 Requirement . 14
5.2.2 Test method . 14
6 Instruction for use . 15
Bibliography . 18

European foreword
This document (EN 17404:2022) has been prepared by Technical Committee CEN/TC 333 “Cycles”, the
secretariat of which is held by UNI.
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 November 2022, and conflicting national standards shall
be withdrawn at the latest by November 2022.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
This document gives requirements for EPAC Mountain bikes.
This document has been developed in response to demand throughout Europe. Its aim is to provide a
standard for the assessment of electrically powered cycles of a type which are excluded from type
approval by Regulation (EU) No 168/2013.
Due to the limitation of the voltage to 48 V d.c., there are no special requirements applicable to the EPAC
in regard to protection against electrical hazards.
Following the completion of a risk analysis, the focus in this document is on EPAC Mountain bikes. City
and trekking EPACs are considered in EN 15194. This document is to be used in conjunction with
EN 15194:2017.
This document supplements or modifies the corresponding clauses in EN 15194:2017, so as to convert it
into for EPAC Mountain bikes. Where a particular subclause of EN 15194:2017 is not mentioned in this
document, that subclause applies. When this document states “addition”, “modification” or
“replacement”, the relevant text of EN 15194:2017 is to be adapted accordingly.
This document does not cover battery and vibration issues due to a work under development in TC 333,
not ready and not consolidated yet as “state of the art”.
This document is a type C standard as stated in EN ISO 12100:2010. The machinery concerned and the
extent to which hazards, hazardous situations and hazardous events covered are indicated in the scope
of this document.
When provisions of this type C standard are different from those which are stated in type A or B
standards, the provisions of this type C standard take precedence over the provisions of the other
standards, for machines that have been designed and built according to the provisions of this type C
standard.
In real life situation an EPAC Mountain bike can fall over to the side causing the battery holder to break
without damage to the battery case itself. While the standard contains a strength test for the battery an
additional test is required for the situation described. This will be considered at the next revision. The
battery holder should withstand this realistic and typical situation. Risk assessment carried out by the
manufacturer should identify suitable measures to deal with this situation until it can be dealt with in the
standard.
1 Scope
For the purpose of this document the scope of EN 15194:2017 is applicable with the following addition.
This document specifies specific requirements applicable to EPAC Mountain bikes.
EPAC-MTB category 5 according to EN 17406:2020+A1:2021, Table 1 is not covered by this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 15194:2017, Cycles - Electrically power assisted cycles - EPAC Bicycles
EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN ISO 4210-2:2015, Cycles - Safety requirements for bicycles - Part 2: Requirements for city and trekking,
young adult, mountain and racing bicycles (ISO 4210-2:2015)
EN ISO 4210-5:2014, Cycles - Safety requirements for bicycles - Part 5: Steering test methods (ISO 4210-
5:2014, Corrected version 2015-02-01)
EN ISO 4210-6:2015, Cycles - Safety requirements for bicycles - Part 6: Frame and fork test methods (ISO
4210-6:2015)
EN ISO 4210-8:2014, Cycles - Safety requirements for bicycles - Part 8: Pedal and drive system test methods
(ISO 4210-8:2014)
EN ISO 4210-9:2014, Cycles - Safety requirements for bicycles - Part 9: Saddles and seat-post test methods
(ISO 4210-9:2014)
EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction
(ISO 12100:2010)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply. Not all definitions are applicable to EPACs.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp

As impacted by EN 60529:1991/A1:2000, EN 60529:1991/A2:2013, EN 60529:1991/corrigendum May 1993,
EN 60529:1991/A2:2013/AC:2019-02 and EN 60529:1991/AC:2016-12.
3.1
EPAC Mountain bike
EPAC-MTB
electrically power assisted cycle designed for use off-road on rough terrain, on public roads and on public
pathways equipped with a suitably strengthened frame and other components, and, typically, with wide-
section tyres with coarse tread patterns and a wide range of transmission gears
4 Safety
...