SIST EN IEC 62040-1:2019/A1:2024

Uninterruptible power systems (UPS) - Part 1: Safety requirements (IEC 62040-1:2017/A1:2021)

No scope available

Unterbrechungsfreie Stromversorgungssysteme (USV) - Teil 1: Sicherheitsanforderungen (IEC 62040-1:2017/A1:2021)

Alimentations sans interruption (ASI) - Partie 1: Exigences de sécurité (IEC 62040-1:2017/A1:2021)

Sistemi z neprekinjenim napajanjem (UPS) - 1. del: Varnostne zahteve - Dodatek A1 (IEC 62040-1:2017/A1:2021)

General Information

• Status: Published
• Public Enquiry End Date: 10-Sep-2020
• Publication Date: 11-Apr-2024
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 24-Oct-2023
• Due Date: 29-Dec-2023
• Completion Date: 12-Apr-2024
• 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: EN IEC 62040-1:2019/A1:2023 - Uninterruptible power systems (UPS) - Part 1: Safety requirements

Relations

• Amends: SIST EN IEC 62040-1:2019 - Uninterruptible power systems (UPS) - Part 1: Safety requirements (IEC 62040-1:2017)
• Effective Date: 07-Jan-2020
• Revised: oSIST prEN IEC 62040-1:2025 - Uninterruptible power systems (UPS) - Part 1: Safety requirements
• Effective Date: 14-Jun-2022

Overview

EN IEC 62040-1:2019/A1:2023 is the European adoption of Amendment 1 to IEC 62040-1:2017, titled Uninterruptible power systems (UPS) - Part 1: Safety requirements. Published by CENELEC in 2023 and implemented in national standards from 2024, this amendment updates safety provisions applicable to UPS equipment, with a notable focus on enclosure material flammability. The document aligns European requirements with the international IEC text without modification.

Key topics and requirements

• Scope: Safety requirements for UPS (uninterruptible power systems). (Full scope not provided in the extract; this amendment modifies specific safety clauses.)
• Amendment content: Adds a new subclause 4.6.3.2 - Flammability of enclosure materials.
  • For enclosure materials used at their minimum thickness, materials are considered compliant without testing if they meet flammability class 5VB or better per IEC 60695-11-20.
  • For movable UPS with total mass ≤ 18 kg, materials at minimum thickness are considered compliant without testing if they meet V-1 or better per IEC 60695-11-10.
• Normative cross-references: The amendment references and modifies application of IEC 62477-1:2012 provisions and relies on flame test methods in IEC 60695 series.
• Implementation timeline: CENELEC fixed national implementation and withdrawal dates for conflicting standards (national implementation by 2024-04-20; conflicting standards withdrawn by 2026-10-20).

Practical applications

• UPS manufacturers use this standard to design and validate enclosure materials and safety aspects to meet European and international safety expectations.
• Test laboratories and certification bodies apply the flammability criteria and referenced IEC test methods when assessing UPS compliance.
• Specifiers, procurement teams and system integrators reference the standard when selecting UPS products for data centers, medical facilities, telecoms and industrial power protection.
• Regulators and national committees rely on the amended EN IEC text for harmonized safety rules and to inform national adoption.

Related standards

• IEC 62040-1 (base standard)
• IEC 62477-1 (referred for application of flammability rules)
• IEC 60695-11-20 (flammability class 5VB test method)
• IEC 60695-11-10 (V-1 flammability test method)

This amendment clarifies flammability acceptance criteria for UPS enclosures, helping manufacturers and compliance professionals streamline material selection and testing for UPS safety compliance across Europe. Keywords: EN IEC 62040-1:2019/A1:2023, UPS safety requirements, uninterruptible power systems standard, enclosure flammability, IEC 60695, CENELEC.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2024
Sistemi z neprekinjenim napajanjem (UPS) - 1. del: Varnostne zahteve - Dodatek
A1 (IEC 62040-1:2017/A1:2021)
Uninterruptible power systems (UPS) - Part 1: Safety requirements (IEC 62040-
1:2017/A1:2021)
Unterbrechungsfreie Stromversorgungssysteme (USV) - Teil 1:
Sicherheitsanforderungen (IEC 62040-1:2017/A1:2021)
Alimentations sans interruption (ASI) - Partie 1: Exigences de sécurité (IEC 62040-
1:2017/A1:2021)
Ta slovenski standard je istoveten z: EN IEC 62040-1:2019/A1:2023
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/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2023
ICS 29.200
English Version
Uninterruptible power systems (UPS) - Part 1: Safety
requirements
(IEC 62040-1:2017/A1:2021)
Alimentations sans interruption (ASI) - Partie 1 : Exigences Unterbrechungsfreie Stromversorgungssysteme (USV) -
de sécurité Teil 1: Sicherheitsanforderungen
(IEC 62040-1:2017/A1:2021) (IEC 62040-1:2017/A1:2021)
This amendment A1 modifies the European Standard EN IEC 62040-1:2019; it was approved by CENELEC on 2021-06-24. 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62040-1:2019/A1:2023 E

European foreword
The text of document 22H/269/FDIS, future IEC 62040-1/A1, prepared by SC 22H "Uninterruptible
power systems (UPS)" of IEC/TC 22 "Power electronic systems and equipment" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62040-1:2019/A1:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-04-20
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-10-20
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62040-1:2017/A1:2021 was approved by CENELEC as a
European Standard without any modification.

IEC 62040-1 ®
Edition 2.0 2021-05
INTERNATIONAL
STANDARD
AMENDMENT 1
Uninterruptible power systems (UPS) –

Part 1: Safety requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.200 ISBN 978-2-8322-9792-6

– 2 – IEC 62040-1:2017/AMD1:2021
 IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
UNINTERRUPTIBLE POWER SYSTEMS (UPS) –

Part 1: Safety requirements
AMENDMENT 1
FOREWORD
1) The Internati
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