Uninterruptible power systems (UPS) - Part 1-1: General and safety requirements for UPS used in operator access areas

applies to electronic uninterruptible power systems (UPS) with an electrical energy storage device in the d.c. link. It is to be used with IEC 60950-1 which is referred to in this standard as "RD".

Alimentations sans interruption (ASI) - Partie 1-1: Exigences générales et règles de sécurité pour les ASI utilisées dans des locaux accessibles aux opérateurs

s'applique aux alimentations sans interruption électroniques (ASI) possédant un dispositif d'accumulation de l'énergie sur la liaison à courant continu. Elle est utilisée conjointement avec la CEI 60950-1, qui est référencée «RD» dans la présente norme.

General Information

Status
Replaced
Publication Date
29-Aug-2002
Drafting Committee
WG 1 - TC 22/SC 22H/WG 1
Current Stage
DELPUB - Deleted Publication
Start Date
11-Jun-2008
Completion Date
14-Feb-2026

Relations

Effective Date
05-Sep-2023
Effective Date
05-Sep-2023
Effective Date
05-Sep-2023

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IEC 62040-1-1:2002 - Uninterruptible power systems (UPS) - Part 1-1: General and safety requirements for UPS used in operator access areas Released:8/30/2002

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Frequently Asked Questions

IEC 62040-1-1:2002 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Uninterruptible power systems (UPS) - Part 1-1: General and safety requirements for UPS used in operator access areas". This standard covers: applies to electronic uninterruptible power systems (UPS) with an electrical energy storage device in the d.c. link. It is to be used with IEC 60950-1 which is referred to in this standard as "RD".

applies to electronic uninterruptible power systems (UPS) with an electrical energy storage device in the d.c. link. It is to be used with IEC 60950-1 which is referred to in this standard as "RD".

IEC 62040-1-1:2002 is classified under the following ICS (International Classification for Standards) categories: 29.200 - Rectifiers. Convertors. Stabilized power supply. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 62040-1-1:2002 has the following relationships with other standards: It is inter standard links to IEC 62040-1:2008, IEC 62040-1-1:2002/COR2:2004, IEC 62040-1-1:2002/COR1:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

IEC 62040-1-1:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL IEC
STANDARD
62040-1-1
First edition
2002-08
Uninterruptible power systems (UPS) –
Part 1-1:
General and safety requirements for UPS
used in operator access areas
Alimentations sans interruption (ASI) –
Partie 1-1:
Prescriptions générales et règles de sécurité
pour les ASI utilisées dans des locaux
accessibles aux opérateurs
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (http://www.iec.ch/searchpub/cur_fut.htm)
enables you to search by a variety of criteria including text searches, technical
committees and date of publication. On-line information is also available on
recently issued publications, withdrawn and replaced publications, as well as
corrigenda.
• IEC Just Published
This summary of recently issued publications (http://www.iec.ch/online_news/
justpub/jp_entry.htm) is also available by email. Please contact the Customer
Service Centre (see below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:
Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD
62040-1-1
First edition
2002-08
Uninterruptible power systems (UPS) –
Part 1-1:
General and safety requirements for UPS
used in operator access areas
Alimentations sans interruption (ASI) –
Partie 1-1:
Prescriptions générales et règles de sécurité
pour les ASI utilisées dans des locaux
accessibles aux opérateurs
 IEC 2002  Copyright - 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 Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
X
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 62040-1-1 © IEC:2002(E)
CONTENTS
FOREWORD . 5

1 Scope and specific applications. 7

1.1 Scope . 7

1.2 Specific applications . 7

2 Normative references . 8
3 Definitions . 8
3.1 General . 8
3.2 UPS electrical ratings . 9
3.3 Load types. 9
3.4 Connection to the supply .10
3.5 Circuits and circuit characteristics .10
3.6 Insulation.10
3.7 Equipment mobility .10
3.8 Insulation classes of UPS .10
3.9 Enclosures.10
3.10 Accessibility.10
3.11 Components .10
3.12 Power distribution.11
3.13 Flammability .11
3.14 Miscellaneous.11
3.15 Telecommunication networks.11
4 General conditions for tests.11
4.1 Operating parameters for tests .11
4.2 Loads for tests.12
4.3 Components .12
4.4 Power interfaces.12
4.5 Marking and instructions.12
4.5.1 General.12
4.5.2 Power rating .13
4.5.3 Safety instructions .13

4.5.4 Main voltage adjustment .14
4.5.5 Power outlets.14
4.5.6 Fuses .14
4.5.7 Wiring terminals.14
4.5.8 Battery terminals.14
4.5.9 Controls and indicators .15
4.5.10 Isolation of multiple power sources .15
4.5.11 IT power systems.15
4.5.12 Protection in building installation.15
4.5.13 High leakage current.15
4.5.14 Thermostats and other regulating devices.15
4.5.15 Language.15
4.5.16 Durability of markings .15

62040-1-1 © IEC:2002(E) – 3 –
4.5.17 Removable parts.15

4.5.18 Replaceable batteries .15

4.5.19 Operator access with a tool.16

4.5.20 Battery.16

4.5.21 Installation instructions .17

5 Fundamental design requirements.17

5.1 Protection against electric shock and energy hazards.17

5.1.1 Operator access .17

5.1.2 Access to ELV wiring .17

5.1.3 Discharge of capacitors in the primary circuit.17
5.1.4 Backfeed protection .18
5.1.5 Emergency switching device .18
5.2 Insulation.18
5.3 Limited current circuits.18
5.4 Provisions for protective earthing.19
5.4.1 Protective earthing.19
5.4.2 Bonding .19
5.5 AC and d.c. power isolation .19
5.5.1 Disconnect devices .19
5.5.2 Three-phase equipment .19
5.5.3 Switch as a disconnect .20
5.5.4 Multiple power sources .20
5.5.5 Ungrounded conductors .20
5.6 Overcurrent and earth fault protection.20
5.6.1 Basic requirements .20
5.6.2 Battery circuit protection .21
5.6.3 Location of protective device.21
5.6.4 Rating of protective device.21
5.7 Protection of personnel – Safety interlocks .21
5.7.1 Operator protection.21
5.7.2 Service person protection .22
5.8 Clearances, creepage distances and distances through insulation .23
5.9 External signalling circuits .23
5.10 Limited power source.23
6 Wiring, connections and supply .23

6.1 General .23
6.2 Connection to power.23
6.2.1 Means of connection.23
6.3 Wiring terminals for external power conductors.24
7 Physical requirements .24
7.1 Enclosure .24
7.2 Stability .24
7.3 Mechanical strength.24
7.4 Construction details .25
7.4.1 Openings .25
7.4.2 Gas concentration.25
7.4.3 Equipment movement .25

– 4 – 62040-1-1 © IEC:2002(E)
7.5 Resistance to fire.25

7.6 Battery location.25

7.6.1 Accessibility and maintainability.25

7.6.2 Vibration .26

7.6.3 Distance .26

7.6.4 Insulation.26

7.6.5 Wiring .26

7.6.6 Electrolyte spillage.26

7.6.7 Ventilation .26

7.6.8 Charging voltages.27
7.7 Temperature rise .27
8 Electrical requirements and simulated abnormal conditions .28
8.1 General .28
8.1.1 Earth leakage current.28
8.1.2 Pluggable equipment type B UPS .28
8.2 Electric strength.28
8.3 Abnormal operating and fault conditions .28
8.3.1 Simulation of faults .28
8.3.2 Conditions for tests.29
9 Connection to telecommunication networks .29
Annexes.30
Annex H (informative) Guidance on protection against ingress of water and foreign
objects .31
Annex L (normative) Backfeed protection test .33
Annex M (normative) Examples of reference load conditions.35
Annex N (normative) Ventilation of battery compartments .39
Annex X (informative) Guidance for disconnection of batteries during shipment .42
Figure L.1 – Potential load faults.34
Figure X.1 – Precautionary label for products shipped with the battery disconnected .42
Figure X.2 – Precautionary label for products shipped with the battery connected.43
Table 1 – Location of battery protective device(s) .21
Table 2 – Temperature-rise limits.27

Table 3 – Permitted temperature limits for magnetic windings at the end of stored
energy mode operation .27
Table H.1 – Degrees of protection against foreign objects indicated by the first
characteristic numeral .31
Table H.2 – Degrees of protection against water indicated by the second
characteristic numeral .32

62040-1-1 © IEC:2002(E) – 5 –
UNINTERRUPTIBLE POWER SYSTEMS (UPS) –

Part 1-1: General and safety requirements for UPS

used in operator access areas
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, the IEC publishes International Standards. Their preparation is

entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62040-1-1 has been prepared by subcommittee 22H: Uninter-
ruptible power systems (UPS), of IEC technical committee 22: Power electronic systems and
equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
22H/22/FDIS 22H/24/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annexes L, M and N form an integral part of this standard.
Annexes H and X are for information only.
In this standard, the following print types are used:
– Requirements proper and normative annexes: in roman type;
– Compliance statements and test specifications: in italic type;
– Notes and other informative matter: in smaller roman type;
– Normative conditions within tables: in smaller roman type;
– Terms that are defined in clause 3: bold.

– 6 – 62040-1-1 © IEC:2002(E)
The committee has decided that this publication remains valid until 2006. At this date, in
accordance with the committee’s decision, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or

• amended.
The contents of the corrigendum of December 2002 have been included in this copy.

62040-1-1 © IEC:2002(E) – 7 –
UNINTERRUPTIBLE POWER SYSTEMS (UPS) –

Part 1-1: General and safety requirements for UPS

used in operator access areas
1 Scope and specific applications

1.1 Scope
This standard applies to electronic uninterruptible power systems (UPS) with an electrical
energy storage device in the d.c. link. It is to be used with IEC 60950-1 which is referred to in
this standard as "RD".
When any item is referred to by the phrase "The definitions or the provisions of item/RD
apply", this phrase is intended to mean that the definitions or provisions in that item of
IEC 60950-1 apply, except any which are clearly inapplicable to uninterruptible power
systems. National requirements additional to those in IEC 60950-1 apply and are found as
notes under relevant clauses of the RD.
The primary function of the UPS covered by this standard is to ensure continuity of an
alternating power source. The UPS may also serve to improve the quality of the power source
by keeping it within specified characteristics.
This standard is applicable to UPS which are movable, stationary, fixed or for building-in, for
use on low-voltage distribution systems and intended to be installed in any operator
accessible area. It specifies requirements to ensure safety for the operator and layman who
may come into contact with the equipment and, where specifically stated, for the service
person.
This standard is intended to ensure the safety of installed UPS, both as a single UPS unit or
as a system of interconnected UPS units, subject to installing, operating and maintaining the
UPS in the manner prescribed by the manufacturer.
This standard does not cover d.c. supplied electronic ballasts (IEC 60924 and IEC 60925),
UPS intended to be installed in separated electrical locations and UPS based on rotating
machines.
The relevant general and safety requirements for UPS installed in restricted access locations
are given in IEC 62040-1-2; electromagnetic compatibility (EMC) requirements and definitions

are given in IEC 62040-2.
1.2 Specific applications
Even if this standard does not cover all types of UPS, it may be taken as a guide for such
equipment. Requirements additional to those specified in this standard may be necessary for
specific applications, for example:
– UPS intended for operation while exposed, for example, to extremes of temperature; to
excessive dust, moisture, or vibration; to flammable gases; to corrosive or explosive
atmospheres;
– electromedical applications with the UPS located within 1,5 m from the patient contact
area;
–for UPS subject to transient overvoltages exceeding those for Overvoltage Category II
according to IEC 60664, additional protection might be necessary in the mains supply to
the UPS;
– 8 – 62040-1-1 © IEC:2002(E)
– UPS intended for use where ingress of water and foreign objects are possible, additional

requirements may be necessary; for guidance on such requirements and for relevant

testing, see annex H;
– UPS with trapezoidal output waveforms and long run times (greater than 30 min) in

addition to complying with 5.3.12 of IEC 62040-3 are subject to voltage distortion tests for

the purpose of load compatibility.

NOTE For UPS intended to be used in vehicles, on board ships or aircraft, in tropical countries, or on elevations
greater than 1 000 m, different requirements may be necessary.

2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60417 (all parts), Graphical symbols for use on equipment
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC/TR 60755:1983, General requirements for residual current operated protective devices
Amendment 1 (1988)
Amendment 2 (1992)
IEC 60950-1:2001, Information technology equipment – Safety – Part 1: General requirements
IEC 61000-2-2:2002, Electromagnetic compatibility (EMC) – Part 2-2: Environment –
Compatibility levels for low-frequency conducted disturbances and signalling in public
low-voltage power supply systems
IEC 61008-1:1996, Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCBs) – Part 1: General rules
IEC 61009-1:1996, Residual current operated circuit-breakers with integral overcurrent
protection for household and similar uses (RCBOs) – Part 1: General rules
IEC 62040-1-2, Uninterruptible power systems (UPS) – Part 1-2: General and safety require-
1)
ments for UPS used in restricted access locations
IEC 62040-2:1999, Uninterruptible power systems (UPS) – Part 2: Electromagnetic compatibility
(EMC) requirements
IEC 62040-3:1999, Uninterruptible power systems (UPS) – Part 3: Method of specifying the
performance and test requirements
3 Definitions
3.1 General
For the purposes of this standard, the following definitions apply. Where the terms "voltage"
and "current" are used, they imply the r.m.s. values, unless otherwise specified.
NOTE Care should be taken that measurement instruments given a true r.m.s. reading in the presence of non-
sinusoidal signals.
___________
1)
To be published.
62040-1-1 © IEC:2002(E) – 9 –
3.1.1
uninterruptible power system (UPS)

combination of convertors, switches and energy storage devices (for example, batteries),

constituting a power system for maintaining continuity of load power in case of input power

failure
3.1.2
bypass
power path alternative, either internal or external to the UPS

3.1.3
primary power
power supplied by an electrical utility company or by a user’s generator
3.1.4
backfeed
condition in which a voltage or energy available within the UPS is fed back to any of the input
terminals, either directly or by a leakage path while operating in the stored energy mode and
with primary power not available
3.1.5
backfeed protection
control scheme that reduces the risk of electric shock due to backfeed
3.1.6
stored energy mode
operation of the UPS when supplied by the following conditions:
– primary power is disconnected or is out of a given tolerance;
– battery is being discharged;
– load is within the given range;
– output voltage is within the given tolerance
3.2 UPS electrical ratings
3.2.1
rated voltage
input or output voltage (for three-phase supply, the phase-to-phase voltage) as declared by
the manufacturer
3.2.2
rated voltage range
input or output voltage range as declared by the manufacturer, expressed by its lower and
upper rated voltages
3.2.3
rated current
maximum input or output current of the UPS as declared by the manufacturer
3.3 Load types
3.3.1
normal load
mode of operation which approximates as closely as possible the most severe conditions of
normal use in accordance with the manufacturer’s operating instructions. However, when the
conditions of actual use can obviously be more severe than the maximum load conditions
recommended by the manufacturer, a load shall be used that is representative of the
maximum that can be applied
NOTE For examples of reference normal load conditions for UPS, see annex M.

– 10 – 62040-1-1 © IEC:2002(E)

3.3.2
linear load
load where the current drawn from the supply is defined by the relationship:

I = U/Z
where
I is the load current;
U is the supply voltage;
Z is the load impedance
3.3.3
non-linear load
load where the parameter Z (load impedance) is no longer a constant but is a variable
dependent on other parameters, such as voltage or time (see annex M)
3.4 Connection to the supply
The definitions of 1.2.5/RD apply together with the following.
3.4.1
power cord
flexible cord or cable for interconnection purposes
3.5 Circuits and circuit characteristics
The definitions of 1.2.8/RD apply.
3.5.1
hazardous voltage
The definitions in 1.2.8.5/RD apply.
3.6 Insulation
The definitions of 1.2.9/RD apply.
3.7 Equipment mobility
The definitions of 1.2.3/RD apply.

3.8 Insulation classes of UPS
The definitions of 1.2.4/RD apply.
3.9 Enclosures
The definitions of 1.2.6/RD apply.
3.10 Accessibility
The definitions of 1.2.7/RD apply.
3.11 Components
The definitions of 1.2.11/RD apply.

62040-1-1 © IEC:2002(E) – 11 –

3.12 Power distribution
The definitions of 1.2.8/RD apply.

3.13 Flammability
The definitions of 1.2.12/RD apply.

3.14 Miscellaneous
The definitions of 1.2.13/RD apply together with the following.

3.14.1
type test
The definition of 1.4.2/RD applies together with the following addition.
Where in this standard compliance of materials, components or subassemblies is checked by
inspection or by testing of properties, it is permitted to confirm compliance by reviewing any
relevant data or previous test results that are available instead of carrying out the specified
type tests.
NOTE For physically large units and/or power ratings, adequate test facilities to demonstrate some of the type
tests may not exist.
This situation also applies to some electrical tests for which no commercial test simulation
equipment is available or requires specialized test facilities beyond the scope of the
manufacturer's premises.
3.15 Telecommunication networks
The following definitions apply:
1.2.8.9/RD, 1.2.8.10/RD, 1.2.8.11/RD, 1.2.8.12/RD, 1.2.13.8/RD
4 General conditions for tests
The provisions of 1.4.1/RD, 1.4.2/RD, 1.4.3/RD, 1.4.6/RD, 1.4.7/RD, 1.4.8/RD, 1.4.10/RD,
1.4.11/RD, 1.4.12/RD, 1.4.13/RD, 1.4.14/RD apply together with the following.
Only the leakage current and heating tests shall be performed at input voltage tolerances. All
other tests shall be run at nominal input voltages.

4.1 Operating parameters for tests
Except where specific test conditions are stated elsewhere in the standard, and where it
is clear that there is a significant impact on the results of the test, the tests shall be carried
out under the most unfavourable combination of the following parameters, within the
manufacturer's operating specifications:
– supply voltage;
– absence of supply voltage;
– supply frequency;
– charge condition of the battery;
– physical location of UPS and position of movable parts;
– operating mode;
– 12 – 62040-1-1 © IEC:2002(E)

– adjustments of thermostats, regulating devices or similar controls in operator access

areas, which are
– a) adjustable without the use of a tool, or

– b) adjustable using a means, such as a key or a tool, deliberately provided for the

operator.
4.2 Loads for tests
In determination of input current, and where other test results could be affected, the following
variables shall be considered and adjusted to give the most unfavourable results:

– loads due to recharging of batteries;
– loads due to optional features, offered or provided for by the manufacturer for inclusion in
or with the equipment under test;
– loads due to other units of equipment intended by the manufacturer to draw power from
the equipment under test;
– loads that could be connected to any standard supply outlets in operator access areas
on the equipment, up to the value indicated in the marking required by 4.5.2.
Artificial loads may be used to simulate such loads during testing.
4.3 Components
The provisions of 1.5.1/RD, 1.5.2/RD, 1.5.4/RD, 1.5.5/RD, 1.5.6/RD, 1.5.7/RD, 1.5.8/RD apply.
4.4 Power interfaces
The provisions of 1.6.1/RD, 1.6.2/RD, 1.6.4/RD apply together with the following.
The neutral conductors, if any, shall be insulated from earth and the body throughout the
equipment, as if they were a phase conductor. Components connected between neutral and
earth shall be rated for a working voltage equal to the phase-to-neutral voltage. In the case
of the output neutral conductor being isolated from the input neutral conductor, the service
person responsible for the installation shall connect this output neutral conductor as required
by local wiring rules and as detailed in the installation instructions.
Compliance is checked by inspection.
4.5 Marking and instructions
4.5.1 General
Where a marking is required as detailed below, provision shall be allowed for equivalent
wording. For equipment intended to be installed by anyone other than a service person, the
marking shall be readily visible either in an operator access area or shall be located on an
outside surface of the equipment. If located on an outside surface of fixed equipment, the
marking shall be visible after the equipment has been installed as in normal use.
Markings that are not visible from the outside of the equipment are considered to be in
compliance if they are directly visible when opening a door or cover. If the area behind a door
or cover is not an operator access area, a readily visible marker shall be attached to the
equipment to clearly indicate the location of the marking; it is allowed to use a temporary
marker.
62040-1-1 © IEC:2002(E) – 13 –

4.5.2 Power rating
Equipment shall be provided with adequate markings in order to specify

– input supply requirements,
– output supply ratings.
For equipment with multiple rated voltages, the corresponding rated currents shall be

marked such that the different current ratings are separated by a solidus (/) and the relation

between rated voltage and associated rated current appears distinctly.

Equipment with a rated voltage range shall be marked with either the maximum rated
current or with the current range.
The markings of input and output shall include those in the RD, in addition to the following:
–output rated voltage;
–output rated current or rated power in volt-amperes or active power in watts;
– output rated power factor, if less than unity, or active power and apparent power or active
power and rated current;
– number of output phases (1φ – 3φ) with or without neutral;
– output rated active power, in watts or kilowatts according to annex M;
– output rated apparent power in volt-amperes or kilovoltamperes according to annex M;
– maximum ambient operating temperature range (optional).
NOTE Compliance according to annex M.
For units designed with additional separate automatic bypass/maintenance bypass, additional
input a.c. supply, or external batteries, it shall be allowed for relevant supply ratings to be
specified in the accompanying installation instructions. Where this is done, the following
instruction shall appear on or near the point of connection.
SEE INSTALLATION INSTRUCTIONS BEFORE
CONNECTING TO THE SUPPLY
If a unit is not provided with a means for direct connection to the supply mains, it need not be
marked with its rated current.
4.5.3 Safety instructions
It is necessary to take special precautions to avoid the introduction of hazards when
operating, installing, maintaining, transporting or storing UPS; the manufacturer shall make
available the necessary instructions.
NOTE 1 Special precautions may be necessary, for example, for battery connection of the equipment to the
supply and the interconnection of separate units, if any. The protective connection of the UPS, of the battery
cabinet and terminals or outlets for equipment supplied by UPS shall remain interconnected even when the mains
plug of the UPS is disconnected.
NOTE 2 Where appropriate, installation instructions should include reference to national wiring rules.
NOTE 3 Maintenance information is normally made available only to service persons.
The operating instructions and, for pluggable equipment intended for user installation, the
installation instructions shall be made available to the user.

– 14 – 62040-1-1 © IEC:2002(E)

The manufacturer shall provide the user with guidance on the level of competence necessary
for installation, for example:

– operator installable: any pluggable type A or pluggable type B equipment with battery

already installed by the supplier;

– service person installable: any fixed equipment or equipment with batteries not installed

when delivered to the user.
The manufacturer shall provide the user with guidance on the level of competence necessary

to operate the equipment as
– operated by laymen;
– operated by experienced personnel.
When the disconnect device for isolation of mains power is not incorporated in the equipment
(see 3.4.2/RD) or when the plug on the power supply cord is intended to serve as the
disconnect device, the installation instructions shall state that
–for permanently connected equipment, an appropriate and readily accessible disconnect
device shall be incorporated in the fixed wiring;
– for pluggable UPS, the mains socket outlet that supplies the UPS shall be installed near
the UPS and shall be easily accessible. When the UPS power cord must be connected to
an earthed mains socket outlet for safety reasons, the UPS marking or installation
instructions shall so state; the same requirement for marking applies to any special
equipotential earth bonding to other connected UPS equipment or Class I loads.
NOTE 4 Pluggable power cords are normally 2 m in length or less.
For permanently connected UPS without internal automatic backfeed isolation (see 5.1.4),
the instructions shall require the fitting by the user of a warning label on all primary power
isolators installed remote from the UPS area, to warn electrical maintenance personnel that
the circuit feeds a UPS.
The warning label shall carry the following wording or equivalent.
ISOLATE UNINTERRUPTIBLE POWER SUPPLY (UPS)
BEFORE WORKING ON THIS CIRCUIT
4.5.4 Main voltage adjustment
See 1.7.4/RD.
4.5.5 Power outlets
See 1.7.5/RD.
4.5.6 Fuses
See 1.7.6/RD.
4.5.7 Wiring terminals
See 1.7.7/RD.
4.5.8 Battery terminals
Terminals intended for connection to batteries shall indicate the polarity according to
IEC 60417 or be so constructed as to reduce the likelihood of improper connection.

62040-1-1 © IEC:2002(E) – 15 –

4.5.9 Controls and indicators
See 1.7.8/RD.
4.5.10 Isolation of multiple power sources

See 1.7.9/RD.
4.5.11 IT power systems
See 1.7.10/RD.
4.5.12 Protection in building installation
If pluggable equipment type B or permanently connected equipment relies on the building
installation for the protection of internal wiring of the equipment, the equipment installation
instructions shall so state and shall also specify the necessary requirements for short-circuit
protection or overcurrent protection or, where necessary, for both (see 5.6.1).
If the protection against electric shock of the UPS (5.1) relies on residual current devices in
the building installation circuit and the design of the UPS is such that in any normal or
abnormal operating condition a fault current to earth with d.c. component is possible, the
installation instructions shall define the building residual current devices as type B
(IEC/TR 60755/A2) for three-phase UPS and as type A (IEC 61008-1 or IEC 61009-1) for
single-phase UPS.
NOTE Consideration shall be given to national wiring rules, if any, regarding requirements for public networks
protection.
4.5.13 High leakage current
See 5.1/RD. In addition, the following provisions apply.
For UPS systems intended for use as pluggable equipment type B or fixed installations,
where the earth leakage currents of the UPS and connected loads sum in the primary UPS
protective earth conductor exceeds or is likely to exceed the limits of 5.1/RD under any mode
of operation, the unit shall carry a warning label as required by 5.1/RD, and the installation
manual shall define the connection method to the primary power source.
4.5.14 Thermostats and other regulating devices
See 1.7.11/RD.
4.5.15 Language
See 1.7.12/RD.
4.5.16 Durability of markings
See 1.7.13/RD.
4.5.17 Removable parts
See 1.7.14/RD.
4.5.18 Replaceable batteries
See 1.7.15/RD.
– 16 – 62040-1-1 © IEC:2002(E)

4.5.19 Operator access with a tool

See 1.7.16/RD.
4.5.20 Battery
External battery cabinets or battery compartments within the UPS shall be provided with the
following, clearly legible information in such a position as to be immediately seen by a
service person when servicing the UPS, in accordance with the requirements of 1.7.1/RD:

a) battery type (lead-acid, NiCd, etc.) and number of blocks or cells;

b) nominal voltage of total battery;

c) nominal capacity of total battery (optional);
d) warning label denoting an energy or electrical shock and chemical hazard and reference to
the maintenance handling and disposal requirements detailed in the following instructions.
Exception: Pluggable equipment type A UPS, supplied with integral batteries or with
separate battery cabinets, intended for location either under or over or alongside the UPS,
connected by plugs and sockets for operator installation, need only be fitted with the warning
label (see item d above) on the outside of the unit.
All other information shall be given in the users' instructions.
Instructions
a) Internally mounted battery:
– instructions shall carry sufficient information to enable the replacement of the battery
with a suitable recommended type;
– safety instructions to allow access by a service person shall be stated in the
installation/service handbook;
– if batteries are to be installed by a service person, instructions for interconnections
including terminal torques shall be provided.
The operator manual shall include the following instructions:
– Servicing of batteries should be performed or supervised by personnel
knowledgeable about batteries and required precautions.
– When replacing batteries, replace with the same type and number of batteries or
battery packs.
CAUTION: Do not dispose of batteries in a fire. The batteries may explode.
CAUTION: Do not open or mutilate batteries. Released electrolyte is harmful to the

skin and eyes. It may be toxic.
b) Externally mounted batteries:
– installation instructions shall state voltage, ampere-hour rating, charging regime and
method of protection required on installation to coordinate with UPS protective
devices, where the battery is not pro
...


NORME CEI
INTERNATIONALE
IEC
62040-1-1
INTERNATIONAL
Première édition
STANDARD
First edition
2002-08
Alimentations sans interruption (ASI) –
Partie 1-1:
Exigences générales et règles de sécurité
pour les ASI utilisées dans des locaux
accessibles aux opérateurs
Uninterruptible power systems (UPS) –
Part 1-1:
General and safety requirements
for UPS used in operator access areas

Numéro de référence
Reference number
CEI/IEC 62040-1-1:2004
Numérotation des publications Publication numbering

Depuis le 1er janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are

sont numérotées à partir de 60000. Ainsi, la CEI 34-1 issued with a designation in the 60000 series. For

devient la CEI 60034-1. example, IEC 34-1 is now referred to as IEC 60034-1.

Editions consolidées Consolidated editions

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CEI incorporant les amendements sont disponibles. Par publications. For example, edition numbers 1.0, 1.1

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respectivement la publication de base, la publication de the base publication incorporating amendment 1 and
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.
NORME CEI
INTERNATIONALE
IEC
62040-1-1
INTERNATIONAL
Première édition
STANDARD
First edition
2002-08
Alimentations sans interruption (ASI) –
Partie 1-1:
Exigences générales et règles de sécurité
pour les ASI utilisées dans des locaux
accessibles aux opérateurs
Uninterruptible power systems (UPS) –
Part 1-1:
General and safety requirements
for UPS used in operator access areas

 IEC 2004 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
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Commission Electrotechnique Internationale
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МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 62040-1-1  CEI:2004
SOMMAIRE
AVANT-PROPOS.6

1 Domaine d’application et applications spécifiques .10

1.1 Domaine d’application.10

1.2 Applications spécifiques.10

2 Références normatives.12

3 Définitions.14

4 Conditions générales d’essais.20
4.1 Paramètres de fonctionnement pour les essais.20
4.2 Charges pour essais .20
4.3 Composants.22
4.4 Adaptation au réseau.22
4.5 Marquage et instructions .22
5 Prescriptions fondamentales de conception .32
5.1 Protection contre les chocs électriques et les dangers de transfert d’énergie .32
5.2 Isolation.36
5.3 Circuits à limitation de courant .36
5.4 Dispositions en vue de la mise à la terre .36
5.5 Séparation de la source d’alimentation alternative et continue.36
5.6 Protection contre les surintensités et les défauts à la terre.38
5.7 Protection du personnel – verrouillages de sécurité.42
5.8 Distance dans l’air, lignes de fuite et distances à travers l’isolation .44
5.9 Circuits de signalisation externes .44
5.10 Source à puissance limitée.44
6 Câblage, connexions et alimentation .46
6.1 Généralité.46
6.2 Raccordement à la source d’alimentation .46
6.3 Bornes pour les conducteurs externes d’alimentation .46
7 Prescriptions physiques.46
7.1 Enveloppe.46
7.2 Stabilité.48
7.3 Résistance mécanique.48

7.4 Détails de construction .48
7.5 Résistance au feu.50
7.6 Emplacement des batteries .50
7.7 Echauffements.54
8 Prescriptions électriques et simulation de conditions des défauts .56
8.1 Généralités.56
8.2 Rigidité électrique.56
8.3 Fonctionnement anormal et conditions de défaut.56
9 Connexion à des réseaux de télécommunications.58

62040-1-1  IEC:2004 – 3 –
CONTENTS
FOREWORD.7

1 Scope and specific applications .11

1.1 Scope.11

1.2 Specific applications.11

2 Normative references.13

3 Definitions.15

4 General conditions for tests .21
4.1 Operating parameters for tests .21
4.2 Loads for tests .21
4.3 Components.23
4.4 Power interfaces.23
4.5 Marking and instructions.23
5 Fundamental design requirements .33
5.1 Protection against electric shock and energy hazards .33
5.2 Insulation.37
5.3 Limited current circuits .37
5.4 Provisions for protective earthing .37
5.5 AC and d.c. power isolation.37
5.6 Overcurrent and earth fault protection .39
5.7 Protection of personnel – Safety interlocks.43
5.8 Clearances, creepage distances and distances through insulation.45
5.9 External signalling circuits.45
5.10 Limited power source.45
6 Wiring, connections and supply.47
6.1 General.47
6.2 Connection to power .47
6.3 Wiring terminals for external power conductors .47
7 Physical requirements.47
7.1 Enclosure.47
7.2 Stability.49
7.3 Mechanical strength.49
7.4 Construction details.49

7.5 Resistance to fire.51
7.6 Battery location.51
7.7 Temperature rise.55
8 Electrical requirements and simulated abnormal conditions.57
8.1 General.57
8.2 Electric strength.57
8.3 Abnormal operating and fault conditions.57
9 Connection to telecommunication networks.59

– 4 – 62040-1-1  CEI:2004
Annexe H (informative) Guide pour la protection contre la pénétration de corps

étrangers et contre la pénétration de l’eau .62

Annexe L (normative) Essai relatif à la protection contre un retour de tension en

entrée .66

Annexe M (normative) Conditions de charge de référence .70

Annexe N (normative) Ventilation des compartiments batterie.78

Annexe X (informative) Guide pour la déconnexion des batteries durant le transport .84

Bibliographie.88

Figure L.1 – Défauts potentiels de la charge .68
Figure X.1 – Etiquette de sécurité pour les produits transportés avec leur batterie
déconnectée .84
Figure X.2 – Etiquette de sécurité pour les produits transportés avec leur batterie
connectée.86

Tableau 1 – Emplacement des dispositifs de protection des batteries .40
Tableau 2 – Limites d’échauffement.54
Tableau 3 – Limites admissibles des températures des enroulements magnétiques à la
fin du fonctionnement en mode accumulation d'énergie .54
Tableau H.1 – Degrés de protection contre les corps solides étrangers indiqués par le
premier chiffre caractéristique.62
Tableau H.2 – Degrés de protection contre l’eau indiqués par le deuxième chiffre
caractéristique .64

62040-1-1  IEC:2004 – 5 –
Annex H (informative) Guidance on protection against ingress of water and foreign objects . 63

Annex L (normative) Backfeed protection test .67

Annex M (normative) Examples of reference load conditions .71

Annex N (normative) Ventilation of battery compartments .79

Annex X (informative) Guidance for disconnection of batteries during shipment .85

Bibliography.89

Figure L.1 – Potential load faults .69

Figure X.1 – Precautionary label for products shipped with the battery disconnected .85
Figure X.2 – Precautionary label for products shipped with the battery connected .87

Table 1 – Location of battery protective device(s) .41
Table 2 – Temperature-rise limits.55
Table 3 – Permitted temperature limits for magnetic windings at the end of stored
energy mode operation .55
Table H.1 – Degrees of protection against foreign objects indicated by the first
characteristic numeral.63
Table H.2 – Degrees of protection against water indicated by the second characteristic
numeral .65

– 6 – 62040-1-1  CEI:2004
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

____________
ALIMENTATIONS SANS INTERRUPTION (ASI) –

Partie 1-1: Exigences générales et règles de sécurité pour les ASI

utilisées dans des locaux accessibles aux opérateurs

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
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également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
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intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
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8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.

La Norme internationale CEI 62040-1-1 a été établie par le sous-comité 22H: Alimentations
sans interruption (ASI), du comité d'études 22 de la CEI: Systèmes et équipements
électroniques de puissance.
Cette version bilingue (2004-02) remplace la version monolingue anglaise et ses corrigenda 1
(2002-12) et 2 (2004-02).
Le texte anglais de cette norme est issu des documents 22H/22/FDIS et 22H/24/RVD.
Le rapport de vote 22H/24/RVD donne toute information sur le vote ayant abouti à
l'approbation de cette norme.
La version française de cette norme n’a pas été soumise au vote.

62040-1-1  IEC:2004 – 7 –
UNINTERRUPTIBLE POWER SYSTEMS (UPS) –

Part 1-1: General and safety requirements for UPS

used in operator access areas
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62040-1-1 has been prepared by subcommittee 22H: Uninter-
ruptible power systems (UPS), of IEC technical committee 22: Power electronic systems and
equipment.
This bilingual version (2004-02) replaces the English version and its corrigenda 1 (2002-12)
and 2 (2004-02).
The text of this standard is based on the following documents:
FDIS Report on voting
22H/22/FDIS 22H/24/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The French version of this standard has not been voted upon.

– 8 – 62040-1-1  CEI:2004
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.

Elle est utilisée conjointement avec la CEI 60950-1, qui est référencée «RD» dans la présente
norme.
Dans la présente norme, les caractères d’imprimerie suivants sont employés:

– Exigences proprement dites et annexes normatives: caractères romains.

– Vérification et modalités d’essais: caractères italiques.

– Notes et commentaires : petits caractères romains.

– Conditions normatives applicables aux tableaux: petits caractères romains.
– Termes définis à l’Article 3: caractères gras.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant 2006. A
cette date, la publication sera
• reconduite;
• supprimée;
• remplacée par une édition révisée, ou
• amendée.
62040-1-1  IEC:2004 – 9 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

It is to be used with IEC 60950-1 which is referred to in this standard as "RD".

In this standard, the following print types are used:

– Requirements proper and normative annexes: in roman type.

– Compliance statements and test specifications: in italic type.

– Notes and other informative matter: in smaller roman type.

– Normative conditions within tables: in smaller roman type.

– Terms that are defined in Clause 3: bold.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 10 – 62040-1-1  CEI:2004
ALIMENTATIONS SANS INTERRUPTION (ASI) –

Partie 1-1: Exigences générales et règles de sécurité pour les ASI

utilisées dans des locaux accessibles aux opérateurs

1 Domaine d’application et applications spécifiques

1.1 Domaine d’application
La présente partie de la CEI 62040 s’applique aux alimentations sans interruption
électroniques (ASI) possédant un dispositif d’accumulation de l’énergie sur la liaison à
courant continu. Elle est utilisée conjointement avec la CEI 60950-1, qui est référencée «RD»
dans la présente norme.
Lorsqu’il est fait référence à un article par la phrase «Les définitions ou les dispositions
de l’article / RD s’appliquent», cette phrase signifie que les définitions ou les dispositions de
l’article concerné de la CEI 60950-1 s’appliquent, à l’exception de tout article étant clairement
inapplicable aux alimentations sans interruption. Les exigences nationales complémen-
taires à celles de la CEI 60950-1 s’appliquent et figurent sous forme de notes dans l’article en
question du RD.
La fonction essentielle des ASI traitées dans la présente norme est d’assurer la permanence
d’une source d’alimentation en courant alternatif. L’ASI peut également servir à améliorer la
qualité de la source d’alimentation en la maintenant dans les limites des caractéristiques
spécifiées.
La présente norme s’applique aux ASI mobiles, fixes ou installées, pour utilisation sur
systèmes de distribution basse tension et destinées à être installées dans toute zone
accessible aux opérateurs et spécifie des exigences destinées à assurer la sécurité des
opérateurs ou des ouvriers qui peuvent se trouver en contact avec le matériel et, lorsque
cela est spécifiquement précisé, du personnel de maintenance.
La présente norme est destinée à assurer la sécurité des matériels installés qu’il s’agisse
d’un appareil unique ou d’un système d’appareils interconnecté, destiné à être installé, à
fonctionner et à être entretenu de la manière prescrite par le constructeur.
La présente norme ne concerne pas les ballasts électroniques alimentés en c.c. (CEI 61347
et CEI 60925), les ASI conçues pour être installées dans des locaux électriques séparés et

les ASI réalisées à partir de machines tournantes.
Les exigences générales et règles de sécurité pour les ASI installées dans des locaux
d'accès restreint sont traitées dans la CEI 62040-1-2; les exigences et définitions pour la
compatibilité électromagnétique (CEM) sont traitées dans la CEI 62040-2.
1.2 Applications spécifiques
Même si la présente norme ne traite pas de tous les types d’ASI, elle peut être prise comme
guide pour ces matériels. Des exigences supplémentaires à celles spécifiées dans la
présente norme peuvent être nécessaires pour des applications spécifiques, par exemple:
– ASI destinée à fonctionner exposée, par exemple, à des températures extrêmes; à des
poussières, humidité ou vibrations excessives, à des gaz inflammables; à des
atmosphères corrosives ou explosives;

62040-1-1  IEC:2004 – 11 –
UNINTERRUPTIBLE POWER SYSTEMS (UPS) –

Part 1-1: General and safety requirements for UPS

used in operator access areas
1 Scope and specific applications

1.1 Scope
This part of IEC 62040 applies to electronic uninterruptible power systems (UPS) with an
electrical energy storage device in the d.c. link. It is to be used with IEC 60950-1 which is
referred to in this standard as "RD".
When any item is referred to by the phrase "The definitions or the provisions of item/RD
apply", this phrase is intended to mean that the definitions or provisions in that item of
IEC 60950-1 apply, except any which are clearly inapplicable to uninterruptible power
systems. National requirements additional to those in IEC 60950-1 apply and are found as
notes under relevant clauses of the RD.
The primary function of the UPS covered by this standard is to ensure continuity of an
alternating power source. The UPS may also serve to improve the quality of the power source
by keeping it within specified characteristics.
This standard is applicable to UPS which are movable, stationary, fixed or for building-in, for
use on low-voltage distribution systems and intended to be installed in any operator
accessible area. It specifies requirements to ensure safety for the operator and layman who
may come into contact with the equipment and, where specifically stated, for the service
person.
This standard is intended to ensure the safety of installed UPS, both as a single UPS unit or
as a system of interconnected UPS units, subject to installing, operating and maintaining the
UPS in the manner prescribed by the manufacturer.
This standard does not cover d.c. supplied electronic ballasts (IEC 61347 and IEC 60925),
UPS intended to be installed in separated electrical locations and UPS based on rotating
machines.
The relevant general and safety requirements for UPS installed in restricted access locations

are given in IEC 62040-1-2; electromagnetic compatibility (EMC) requirements and definitions
are given in IEC 62040-2.
1.2 Specific applications
Even if this standard does not cover all types of UPS, it may be taken as a guide for such
equipment. Requirements additional to those specified in this standard may be necessary for
specific applications, for example:
– UPS intended for operation while exposed, for example, to extremes of temperature; to
excessive dust, moisture, or vibration; to flammable gases; to corrosive or explosive
atmospheres;
– 12 – 62040-1-1  CEI:2004
– des applications électromédicales lorsque l’ASI est en liaison physique (périmètre de

1,5 m) avec le malade;
– pour le matériel soumis à des surtensions transitoires dépassant celles définies dans la

catégorie d’installations II selon la CEI 60664, une protection supplémentaire peut être

nécessaire dans le réseau d’alimentation du matériel.

– pour le matériel destiné à être utilisé là où la pénétration d’eau ou de corps étrangers est

possible, des exigences supplémentaires peuvent être nécessaires; à titre de guide pour

l’établissement des telles exigences et pour les essais correspondants, voir l’Annexe H.

– ASI avec sortie de forme trapézoïdale et à longue durée de fonctionnement (supérieure à
30 min) étant en plus conformes au paragraphe 5.3.1.2 de la CEI 62040-3 sont sujets aux

essais de distorsion de tension pour les besoins de la compatibilité de charge.

NOTE Pour le matériel destiné à être utilisé dans les véhicules, à bord de bateaux ou d’aéronefs, dans les pays
tropicaux, ou à une altitude supérieure à 1 000m, des exigences différentes peuvent être nécessaires.
2 Références normatives
Les documents de référence suivants sont indispensables pour l'application du présent
document. Pour les références datées, seule l'édition citée s'applique. Pour les références
non datées, la dernière édition du document de référence s'applique (y compris les éventuels
amendements).
CEI 60417-DB :2002, Symboles Graphiques utilisables sur le matériel
CEI 60529:1989, Degrés de protection procurés par les enveloppes (Code IP)
CEI 60617-DB :2001, Symboles graphiques pour schémas
CEI 60664 (toutes les parties), Coordination de l’isolement des matériels dans les systèmes
(réseaux) à basse tension
CEI 60755:1983, Règles générales pour les dispositifs de protection à courant différentiel
résiduel
Amendement 1 (1988)
Amendement 2 (1992)
CEI 60950-1:2001, Matériels de traitement de l’information – Sécurité – Partie 1:
Prescriptions générales
CEI 61000-2-2:2002, Compatibilité Electromagnétique (EMC) – Partie 2-2: Environnement –

Niveaux de compatibilité pour les perturbations conduites à basse fréquence et la
transmission des signaux sur les réseaux publics d’alimentation basse tension
CEI 61008–1:1996, Interrupteurs automatiques à courant différentiel résiduel pour usages
domestiques et analogues sans dispositif de protection contre les surintensités incorporé (ID)
– Partie 1: Règles générales
CEI 61009–1:1996, Interrupteurs automatiques à courant différentiel résiduel avec protection
contre les surintensités incorporée pour installation domestiques et analogues (DD) – Partie
1: Règles générales
___________
« DB » se réfère à la base de données « on line » de la CEI.
« DB » se réfère à la base de données « on line » de la CEI.

62040-1-1  IEC:2004 – 13 –
– electromedical applications with the UPS located within 1,5 m from the patient contact

area;
– for UPS subject to transient overvoltages exceeding those for Overvoltage Category II

according to IEC 60664, additional protection might be necessary in the mains supply to

the UPS;
– UPS intended for use where ingress of water and foreign objects are possible, additional

requirements may be necessary; for guidance on such requirements and for relevant

testing, see annex H;
– UPS with trapezoidal output waveforms and long run times (greater than 30 min) in
addition to complying with 5.3.1.2 of IEC 62040-3 are subject to voltage distortion tests for

the purpose of load compatibility.

NOTE For UPS intended to be used in vehicles, on board ships or aircraft, in tropical countries, or on elevations
greater than 1 000 m, different requirements may be necessary.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60417-DB:2002 , Graphical symbols for use on equipment
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60664 (all parts), Insulation coordination for equipment within low-voltage systems
IEC 60755:1983, General requirements for residual current operated protective devices
Amendment 1 (1988)
Amendment 2 (1992)
IEC 60617-DB:2001 , Graphical symbols for diagrams
IEC 60950-1:2001, Information technology equipment – Safety – Part 1: General requirements
IEC 61000-2-2:2002, Electromagnetic compatibility (EMC) – Part 2-2: Environment –
Compatibility levels for low-frequency conducted disturbances and signalling in public
low-voltage power supply systems
IEC 61008-1:1996, Residual current operated circuit-breakers without integral overcurrent

protection for household and similar uses (RCCBs) – Part 1: General rules
IEC 61009-1:1996, Residual current operated circuit-breakers with integral overcurrent
protection for household and similar uses (RCBOs) – Part 1: General rules
___________
“DB” refers to the IEC on-line database.
“DB” refers to the IEC on-line database.

– 14 – 62040-1-1  CEI:2004
CEI 62040-1-2:2004, Alimentations sans interruptions (ASI) – Partie 1-2: Prescriptions
générales et règles de sécurité pour les ASI utilisées dans les locaux d’accès restreints

CEI 62040-2:1999, Alimentations sans interruptions (ASI) – Partie 2: Prescriptions pour la
compatibilité électromagnétique (CEM)

CEI 62040-3:1999, Alimentations sans interruptions (ASI) – Partie 3: Méthode de spécification
des performances et procédures d’essai

3 Définitions
3.1 Généralités
Pour les besoins de la présente norme, les définitions suivantes sont applicables ainsi que
certaines définitions de la CEI 60950-1. Lorsque les termes «tension» et «courant» sont
utilisés, il s’agit de valeurs efficaces, sauf spécification contraire.
NOTE Il faut veiller à ce que les appareils de mesure donnent les valeurs efficaces réelles en présence de
signaux non sinusoïdaux.
3.1.1
alimentations sans interruption (ASI)
ensemble de convertisseurs, d’interrupteurs et de dispositifs d’accumulation d’énergie (par
exemple, des batteries), constituant un système d’alimentation capable d’assurer la
permanence d’alimentation de la charge en cas de défaut de la source d’alimentation
3.1.2
bypass
trajet de courant constituant une alternative interne ou externe à l’ASI.
3.1.3
source d’alimentation primaire
source d’alimentation habituellement fournie par une compagnie d’électricité ou quelquefois
par un générateur propre à l’utilisateur
3.1.4
retour de tension en entrée
condition pendant laquelle une portion de la tension ou de l’énergie disponible dans l’ASI est
renvoyée vers l’une quelconque des bornes d’entrée, soit directement, soit par une voie de
courant de fuite pendant un mode de fonctionnement en autonomie et avec la source
d’alimentation primaire non disponible

3.1.5
protection contre un retour de tension en entrée
système de contrôle qui réduit le risque de choc électrique dû à un retour de tension en
entrée
3.1.6
mode de fonctionnement en autonomie
fonctionnement des ASI, lorsque les conditions suivantes sont réunies:
– source d’alimentation primaire déconnectée ou en dehors des tolérances fixées;
– batterie en cours de décharge;
– charge située dans la plage spécifiée;
– tension de sortie située dans les limites de tolérance spécifiées

62040-1-1  IEC:2004 – 15 –
IEC 62040-1-2:2004, Uninterruptible power systems (UPS) – Part 1-2: General and safety
requirements for UPS used in restricted access locations

IEC 62040-2:1999, Uninterruptible power systems (UPS) – Part 2: Electromagnetic compatibility
(EMC) requirements
IEC 62040-3:1999, Uninterruptible power systems (UPS) – Part 3: Method of specifying the
performance and test requirements

3 Definitions
3.1 General
For the purposes of this standard, the following definitions apply as well as some of the
definitions of IEC 60950-1. Where the terms "voltage" and "current" are used, they imply the
r.m.s. values, unless otherwise specified.
NOTE Care should be taken that measurement instruments give a true r.m.s. reading in the presence of non-
sinusoidal signals.
3.1.1
uninterruptible power system (UPS)
combination of convertors, switches and energy storage devices (for example, batteries),
cons
...

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