EN IEC 62040-1:2019/A11:2021

Uninterruptible power systems (UPS) - Part 1: Safety requirements

This AMD will revise Annex ZZ and allow citation of EN 62040-1:2019

Unterbrechungsfreie Stromversorgungssysteme (USV) - Teil 1: Sicherheitsanforderungen

Alimentations sans interruption (ASI) - Partie 1: Exigences de sécurité

Sistemi z neprekinjenim napajanjem (UPS) - 1. del: Varnostne zahteve

General Information

• Status: Published
• Publication Date: 04-Feb-2021
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• Technical Committee: CLC/TC 22X - Power electronics
• Drafting Committee: CLC/TC 22X - Power electronics
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 05-Feb-2021
• Completion Date: 05-Feb-2021
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN IEC 62040-1:2019/A11:2021 - Uninterruptible power systems (UPS) - Part 1: Safety requirements

Relations

• Amends: EN IEC 62040-1:2019 - Uninterruptible power systems (UPS) - Part 1: Safety requirements
• Effective Date: 11-Jun-2019
• Revised: prEN IEC 62040-1:2025 - Uninterruptible power systems (UPS) - Part 1: Safety requirements
• Effective Date: 14-Jun-2022

Overview

The EN IEC 62040-1:2019/A11:2021 standard specifies the safety requirements for uninterruptible power systems (UPS). This amendment (A11) updates Annex ZZ and facilitates the citation of the 2019 edition of EN 62040-1 within compliance frameworks, particularly aligned with EU legislation. Developed by the European Committee for Electrotechnical Standardization (CENELEC), this European Standard ensures UPS products meet essential safety criteria to protect users, equipment, and environments.

This document supports harmonization with the European Union’s Low Voltage Directive (2014/35/EU), providing manufacturers and regulators with clear safety benchmarks. Following these established norms helps ensure reliable operation and safety of UPS systems across various industrial and consumer applications.

Key Topics

• UPS Safety Requirements
  This standard defines safety principles for UPS design, manufacturing, and installation to prevent hazards such as electric shock, fire, and mechanical injury. Key protections focus on safe assembly, proper insulation, and safeguarding against electrical and non-electrical dangers.

• Compliance with EU Directive 2014/35/EU
  EN IEC 62040-1:2019/A11:2021 aligns with the Low Voltage Directive to provide a presumption of conformity, facilitating market access within the EU and EFTA states while ensuring high levels of electrical safety.

• Hazard Protection
  The standard addresses protection from:

  • Electrical injuries to persons and domestic animals
  • Danger from temperatures, arcs, or radiation
  • Non-electrical risks such as mechanical failures and environmental stresses
  • Insulation integrity under foreseeable conditions

• Mechanical and Environmental Resistance
  Requirements include that UPS units must withstand mechanical stresses and environmental conditions without endangering users or property.

• National Adoption and Amendment Regulations
  CENELEC members are required to adopt this amendment within set deadlines, replacing conflicting national standards and maintaining consistent safety practices across European countries.

Applications

• Industrial UPS Systems
  Ensures safe implementation of power backup units critical in data centers, manufacturing, healthcare facilities, and telecommunications to avoid disruption and electrical hazards.

• Commercial and Residential Power Supplies
  Applies to UPS used in office buildings, retail environments, and homes, guaranteeing reliable and safe operation during power disturbances.

• Regulatory Compliance and Certification
  Facilitates CE marking and compliance reporting within EU markets, assisting manufacturers in meeting legislative requirements concerning electrical equipment safety.

• Product Development and Quality Assurance
  Guides designers and engineers to integrate essential safety features early in UPS development to reduce risks and increase product reliability and customer trust.

Related Standards

• EN IEC 62040-2 – UPS electromagnetic compatibility (EMC) requirements, complementing safety norms with standards covering electromagnetic disturbances.

• EN 62477-1:2012/A12:2021 – Covers safety requirements for power electronic converters, relevant for UPS design focusing on conversion technology safety.

• EU Low Voltage Directive 2014/35/EU – The legislative framework with which this standard complies, concerning electrical equipment operating at low voltages.

• CENELEC Internal Regulations – Governance rules for adopting standards and amendments uniformly within member states ensuring harmonized safety practices.

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Keywords: UPS safety requirements, uninterruptible power systems, EN IEC 62040-1 amendment, EU Low Voltage Directive compliance, electrical equipment safety, UPS standards, CENELEC UPS safety, industrial UPS, power backup safety, European UPS regulations

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2021
Sistemi z neprekinjenim napajanjem (UPS) - 1. del: Varnostne zahteve
Uninterruptible power systems (UPS) - Part 1: Safety requirements
Unterbrechungsfreie Stromversorgungssysteme (USV) - Teil 1: Allgemeine
Anforderungen und Sicherheitsanforderungen an USV
Alimentations sans interruption (ASI) - Partie 1: Exigences de sécurité
Ta slovenski standard je istoveten z: EN IEC 62040-1:2019/A11:2021
ICS:
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62040-1:2019/A11

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 29.200
English Version
Uninterruptible power systems (UPS) - Part 1: Safety
requirements
Alimentations sans interruption (ASI) - Partie 1: Exigences Unterbrechungsfreie Stromversorgungssysteme (USV) -
de sécurité Teil 1: Allgemeine Anforderungen und
Sicherheitsanforderungen an USV
This amendment A11 modifies the European Standard EN IEC 62040-1:2019; it was approved by CENELEC on 2020-11-17. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62040-1:2019/A11:2021 E

European foreword
This document (EN IEC 62040-1:2019/A11:2021) has been prepared by CLC/TC 22X "Power
electronics".
The following dates are fixed:
• latest date by which this document has (dop) 2021-08-05
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023-11-17
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
Annex ZZ
(informative)
Relationship between this European Standard and the safety
objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be
covered
This European Standard has been prepared under a Comm
...