SIST EN 300 132-1 V2.2.1:2023

ETSI EN 300 132-1 V2.2.1 (2022-11)






EUROPEAN STANDARD
Environmental Engineering (EE);
Power supply interface at the input to Information and
Communication Technology (ICT) equipment;
Part 1: Alternating Current (AC)

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2 ETSI EN 300 132-1 V2.2.1 (2022-11)

Reference
REN/EE-02102
Keywords
environment, interface, power supply
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2022.
All rights reserved.

ETSI

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3 ETSI EN 300 132-1 V2.2.1 (2022-11)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 10
4 Power Interface "A1" . 10
5 AC interface requirements "A1" . 12
5.0 Introduction . 12
5.1 Nominal voltage at interface "A1" . 12
5.2 Normal service voltage range categories at interface "A1" . 13
5.3 Reference test voltage at interface "A1" . 13
5.4 Abnormal service voltage ranges at interface "A1" . 14
6 Voltage variations, voltage dips, short interruptions and voltage surges at interface "A1" . 14
6.0 Introduction . 14
6.1 Voltage variations. 15
6.2 Voltages dips . 16
6.3 Short interruptions . 16
6.4 Voltage surges . 17
7 AC Supply protection on interface "A1" . 18
8 Maximum steady state current I in the normal service voltage range at interface "A1" . 18
m
9 Inrush current on interface "A1" . 18
9.1 Limits . 18
9.2 Measurement method . 19
9.3 Protective device ratings . 20
10 Earthing and Bonding . 20
11 Electrical Safety requirements . 20
12 EMC requirements at the input of ICT equipment . 20
Annex A (informative): ICT power supply configurations providing a unified power interface
in the present document . 21
Annex B (normative): Identification of interface "A1" . 23
Annex C (informative): Calculation of the extreme AC voltage range at interface "A1" . 24
Annex D (informative): Dimensioning of over-current protective devices . 25
Annex E (normative): Test generator for voltage dips, short interruptions and voltage
variations . 26
Annex F (informative): Details of the voltage surges measurement in the most common case
of distribution and protective devices . 27
ETSI

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4 ETSI EN 300 132-1 V2.2.1 (2022-11)
Annex G (informative): Guide for measuring inrush current and for transferring the
recorded pulses onto the limit chart . 28
G.1 Measurement . 28
G.2 Pulse waveform transformation . 28
History . 30

ETSI

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5 ETSI EN 300 132-1 V2.2.1 (2022-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE).
The present document is part 1 of a multi-part deliverable covering Environmental Engineering (EE); Power supply
interface at the input to Information and Communication Technology (ICT) equipment, as identified below:
Part 1: "Alternating Current (AC)";
Part 2: "-48 V Direct Current (DC)";
Part 3: "Up to 400 V Direct Current (DC)";

National transposition dates
Date of adoption of this EN: 31 October 2022
Date of latest announcement of this EN (doa): 31 January 2023
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 2023
Date of withdrawal of any conflicting National Standard (dow): 31 July 2023

ETSI

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6 ETSI EN 300 132-1 V2.2.1 (2022-11)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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7 ETSI EN 300 132-1 V2.2.1 (2022-11)
1 Scope
The present document contains requirements for the input of the ICT equipment connected to interface "A1".
The voltage at interface "A1" defined in the present document is single phase and three phase AC.
The following voltage range categories are covered:
• Narrow single phase "A1" and narrow three phase "A1" AC voltage range defined to comply with
n-1p n-3p
nominal European AC voltages defined in IEC 60038 [i.2].
• Wide single phase "A1" and wide three phase "A1" AC voltage range for worldwide nominal AC
w-1p w-3p
voltages. This wide voltage range is based on the nominal voltages defined in IEC 60038 [i.2].
The present document aims at providing compatibility between the power supply equipment and both the ICT equipment,
and the different load units connected to the same interface "A1" (e.g. control/monitoring, cooling system, etc.).
The purpose of the present document is:
• to identify a power supply system with the same characteristics for all ICT equipment defined in the area of
application; the area of application may be any location where the interface "A1" is used i.e.
telecommunication centres, Radio Base Stations, datacentres and customer premises;
• to facilitate interworking of different (types of) loads;
• to facilitate the standardization of power supply systems for ICT equipment;
• to facilitate the installation, operation and maintenance in the same network of ICT equipment and systems
from different origins. General requirements for safety and EMC are out of the scope of the present document
series unless specific requirement not defined in existing safety or EMC standards.
The present document concerns the requirements for the interface between Information and Communication
Technology (ICT) equipment and its power supply. It includes requirements relating to its stability and measurement.
Various other references and detailed measurement and test arrangements are contained in informative annexes.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] IEC 60947-2: "Low-voltage switchgear and controlgear - Part 2: Circuit-breakers".
[2] IEC 60269-1: "Low-voltage fuses - Part 1: General requirements".
[3] IEC 61000-4-5:2014+AMD1:2017: "Electromagnetic compatibility (EMC) - Part 4-5: Testing and
measurement techniques - Surge immunity test".
[4] IEC 61000-4-11:2020: "Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests
for equipment with input current up to 16 A per phase".
ETSI

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8 ETSI EN 300 132-1 V2.2.1 (2022-11)
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI ETS 300 132-1 (Edition 1): "Equipment Engineering (EE); Power supply interface at the
input to telecommunications equipment; Part 1: Operated by alternating current (ac) derived from
direct current (dc) sources".
[i.2] IEC 60038:2009+AMD1:2021: "IEC standard voltages".
[i.3] IEC 60050-601: "International Electrotechnical Vocabulary (IEV) Part 601: Generation,
transmission and distribution of electricity - General".
[i.4] Void.
[i.5] Void.
[i.6] Void.
[i.7] Void.
[i.8] IEC 60445: "Basic and safety principle for man-machine interface, marking and
identification - Identification of equipment terminals, conductor terminations and conductors".
[i.9] IEC 60898-1:2015: "Electrical accessories - Circuit-breakers for overcurrent protection for
household and similar installations - Part 1: Circuit-breakers for a.c. operation".
[i.10] IEC 60898-2: "Electrical accessories - Circuit-breakers for overcurrent protection for household
and similar installations - Part 2: Circuit-breakers for AC and DC operation".
[i.11] IEC 60364 series: "Low-voltage electrical installations".
[i.12] IEC 62040 series: "Uninterruptible power systems (UPS)".
[i.13] IEC 60050-351:2006: "International Electrotechnical Vocabulary (IEV) - Part 351: Control
technology".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
abnormal service voltage ranges: steady-state voltage ranges over which the ICT equipment will not be expected to
maintain normal service but will survive undamaged
area of application: any location where the interface "A1" is used i.e. telecommunication centres, Radio Base Stations,
datacentres and customer premises
customer premises: location which is the sole responsibility of the customer
ICT equipment: device, in the telecommunication network infrastructure, that provides an ICT service
interface A: interface, physical point, at which -48 VDC power supply is connected in order to operate the ICT
equipment
ETSI

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9 ETSI EN 300 132-1 V2.2.1 (2022-11)
interface "A1": interface, physical point, at which AC power supply is connected in order to operate the ICT
equipment
NOTE: "A1" and "A1" are used for different voltage ranges: narrow and wide respectively.
n w
interface A3: interface, physical point, at which 400 VDC power supply is connected in order to operate the ICT
equipment
load unit: power consuming equipment, that is part of a system block
nominal voltage: value of the voltage by which the electrical installation or part of the electrical installation is
designated and identified
NOTE: This definition is based on IEC 60050-601 [i.3].
normal service: service mode where ICT equipment operates within its specification
normal service voltage range: range of the steady-state voltage at the "A1" interface over which the equipment will
maintain normal service
power supply: power supply to which ICT equipment is intended to be connected
reference test voltage: voltage used as a reference to define the test voltage in the present document
NOTE: The test voltage may be also a percentage of this voltage.
steady-state: state of a system at which all state and output variables remain constant in time while all input variables
are constant
NOTE: This definition is numbered 351-24-09 in IEC 60050-351:2006 [i.13].
system block: functional group of ICT equipment depending for its operation and performance on its connection to the
same power supply
telecommunication centre: any location where ICT equipment is installed and is the sole responsibility of the operator
3.2 Symbols
For the purposes of the present document, the following symbols apply:
"A1" Single phase narrow voltage range at interface "A1"
n-1p
"A1" Three phase narrow voltage range at interface "A1"
n-3p
"A1" Single phase wide voltage range at interface "A1"
w-1p
"A1" Three phase wide voltage range at interface "A1"
w-3p
I Maximum steady state current drain at interface "A1"
m
I Instantaneous surge current at interface "A1"
t
I Maximum input current (at AC RMS), stated by the manufacturer, for a fully-equipped and loaded
UT
system block behind interface "A1"
U Reference test voltage for narrow voltage range
T
U Minimum reference test voltage for wide voltage range for single phase or 3 phase line to neutral
TW1min
U Maximum reference test voltage for wide voltage range for single phase or 3 phase line to neutral
TW1max
U Minimum reference test voltage for wide voltage range for 3 phase
TW2min
U Maximum reference test voltage for wide voltage range for 3 phase
TW2max
ETSI

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10 ETSI EN 300 132-1 V2.2.1 (2022-11)
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
NOTE: Also when used as a suffix to units of measurement.
DC Direct Current
NOTE: Also when used as a suffix to units of measurement.
EMC ElectroMagnetic Compatibility
EUT Equipment Under Test
ICT Information and Communication Technology
L Phase conductor
LISN Line Impedance Stabilization Networks
N Neutral conductor
PE Protective Earth
RMS Root Mean Square
UPS Uninterruptible Power Supply
VAC Volts Alternating Current
VDC Volts Direct Current
4 Power Interface "A1"
The power supply interface, interface "A1" of figure 1, is a physical point to which all the requirements are related. This
point is situated between the power supply system(s) and the power consuming ICT equipment of the area of
application defined in the scope of the present document.
An example of configurations in which interface "A1" is identified is given in annex B.
Interface "A1" is located at the power terminals of the ICT equipment or system as defined by the manufacturer in
accordance to IEC 60445 [i.8].
NOTE 1: Subject to the installation preconditions, this point may be located at any other point between the power
supply system and the ICT equipment by mutual agreement of the relevant parties.
NOTE 2: The power supply can be derived from AC grid e.g. through AC bypass of UPS or inverters.
ETSI

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11 ETSI EN 300 132-1 V2.2.1 (2022-11)
ICT Equipment
A1

(L) Live AC terminal in single phase supply.
(N) Neutral AC terminal.
PE Protective Earth.

ICT Equipment
A1

(L1, L2, L3) Live AC terminals in 3 phases supply.
(N) Optional Neutral AC terminal.
PE Protective Earth.
ETSI

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12 ETSI EN 300 132-1 V2.2.1 (2022-11)

(L1, L2) Live AC terminals in 2 phases supply.
PE Protective Earth.

Figure 1: General identification of the interface "A1" in single, dual and 3 phase AC supply
5 AC interface requirements "A1"
5.0 Introduction
The definition of the AC interface voltages ranges and typical operating voltage values are defined in the following
subclauses of clause 5.
5.1 Nominal voltage at interface "A1"
In Europe, the AC input voltage of the ICT equipment shall comply with the nominal single phase voltage of 230 V AC
and for three phase it shall comply with 400 V AC at a power frequency of 50 Hz.
NOTE 1: Nominal voltage as defined in table 1 of IEC 60038 [i.2].
ICT equipment intended for worldwide use is recommended to comply with nominal voltages and frequencies defined
in table 1 of the present document.
NOTE 2: Nominal voltages as defined in table 1 of the present document and table 6 of IEC 60038 [i.2], except for
115 V and 127 V AC single phase which is also used in some countries.
Table 1: Nominal voltages
AC Single phase voltages (50 Hz or 60 Hz) AC Three phase voltages (50 Hz or 60 Hz)
100, 110, 115, 120, 127, 200, 220, 230, 240 200, 208, 220, 240, 380, 400, 415

ETSI

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13 ETSI EN 300 132-1 V2.2.1 (2022-11)
5.2 Normal service voltage range categories at interface "A1"
The normal service voltage range categories at powering interface "A1" of ICT equipment shall be as follows:
• Normal service voltage range (Narrow) - Single phase ("A1" ): 197 - 253 VAC RMS (line to neutral)
n-1p
NOTE 1: The minimum voltage at interface "A1" is calculated as 230 V nominal -10 % at the incoming supply
n-1p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 2: The maximum voltage at interface "A1" is calculated as 230 V nominal +10 %.
n-1p
• Normal service voltage range (Narrow) - Three phase ("A1" ): 344 - 440 VAC RMS (line to line)
n-3p
NOTE 3: The minimum voltage at interface "A1" is calculated as 400 V nominal -10 % at the incoming supply
3p-n
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 4: The maximum voltage at interface "A1" is calculated as 400 V nominal +10 %.
3p-n
• Normal service voltage range (wide) Single phase ("A1" ) 86 - 264 VAC (line to neutral)
w-1p
NOTE 5: The minimum voltage at interface "A1" is calculated as 100 V nominal -10 % at the incoming supply
w-1p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 6: The maximum voltage at interface "A1" is calculated as 240 V nominal +10 %.
w-1p
• Normal service voltage range (wide) - Three phase ("A1" ) 172 - 456 VAC (line to neutral)
w-3p
NOTE 7: The minimum voltage at interface "A1" is calculated as 200 V nominal -10 % at the incoming supply
w-3p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 8: The maximum voltage at interface "A1" is calculated as 415 V nominal +10 %.
w-3p
5.3 Reference test voltage at interface "A1"
The reference test voltage (U ) for ICT equipment shall be:
T
1) U = 230 V for single phase or 3 phase line to neutral equipment (test voltage for narrow voltage range)
T
2) U = 400 V for three phase equipment (test voltage for narrow voltage range line to line)
T
Two test voltages shall be used for wide voltage range equipment:
1) U = 100 and U = 240 V for single phase or 3 phase line to neutral equipment (test voltage for
TW1min TW1max
wide voltage range)
2) U = 200 and U = 415 V for three phase equipment (test voltage for wide voltage range line to
TW2min TW2max
line)
NOTE: The powering solution should work in any site even with very long power cables i.e. U at the input of
T
ICT equipment is lower than power supply output. For constant power ICT equipment, the current is
increasing as a function of decreasing voltage.
ETSI

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14 ETSI EN 300 132-1 V2.2.1 (2022-11)
5.4 Abnormal service voltage ranges at interface "A1"
The ICT equipment may be subject to steady state voltage out of the normal service voltage range. Limits of abnormal
service voltage range are defined as follows:
• 0 V < U < 197 V for narrow range single phase (line to neutral interface)
• 0 V < U < 86 V for wide range single phase (line to neutral interface)
• 0 V < U < 344 V for narrow range three phase (line to line interface)
• 0 V < U < 172 V for wide range three phase (line to line interface)
After the restoration of the supply from the abnormal service voltage range to the normal service voltage range, the ICT
equipment shall fulfil the following performance criteria:
• the ICT equipment shall not suffer any damage;
• the ICT equipment shall be able to automatically resume operation according to its specifications when the
voltage comes back into the normal service voltage range.
NOTE: The second criterion implies that abnormal service voltage should not lead to the disconnection of power
supply units e.g. by causing circuit breakers, fuses or other such devices to operate.
6 Voltage variations, voltage dips, short interruptions
and voltage surges at interface "A1"
6.0 Introduction
Under abnormal conditions, voltage values outside the normal service voltage range may occur for short time.
The deviations from the steady-state voltage at the "A1" interface may be caused by:
• Voltage variations.
• Voltage dips.
• Voltage interruptions.
• Voltage surges.
The
...

Draft ETSI EN 300 132-1 V2.1.6 (2022-08)






EUROPEAN STANDARD
Environmental Engineering (EE);
Power supply interface at the input to
Information and Communication Technology (ICT)
equipment;
Part 1: Alternating Current (AC)

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)

Reference
REN/EE-02102
Keywords
environment, interface, power supply
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2022.
All rights reserved.

ETSI

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3 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 10
4 Power Interface "A1" . 10
5 AC interface requirements "A1" . 12
5.0 Introduction . 12
5.1 Nominal voltage at interface "A1" . 12
5.2 Normal service voltage range categories at interface "A1" . 13
5.3 Reference test voltage at interface "A1" . 13
5.4 Abnormal service voltage ranges at interface "A1" . 14
6 Voltage variations, voltage dips, short interruptions and voltage surges at interface "A1" . 14
6.0 Introduction . 14
6.1 Voltage variations. 15
6.2 Voltages dips . 16
6.3 Short interruptions . 16
6.4 Voltage surges . 17
7 AC Supply protection on interface "A1" . 18
8 Maximum steady state current Im in the normal service voltage range at interface "A1" . 18
9 Inrush current on interface "A1" . 18
9.1 Limits . 18
9.2 Measurement method . 19
9.3 Protective device ratings . 20
10 Earthing and Bonding . 20
11 Electrical Safety requirements . 20
12 EMC requirements at the input of ICT equipment . 20
Annex A (informative): ICT power supply configurations providing a unified power interface
in the present document . 21
Annex B (normative): Identification of interface "A1" . 23
Annex C (informative): Calculation of the extreme AC voltage range at interface "A1" . 24
Annex D (informative): Dimensioning of over-current protective devices . 25
Annex E (normative): Test generator for voltage dips, short interruptions and voltage
variations . 26
Annex F (informative): Details of the voltage surges measurement in the most common case
of distribution and protective devices . 27
ETSI

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4 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Annex G (informative): Guide for measuring inrush current and for transferring the
recorded pulses onto the limit chart . 28
G.1 Measurement . 28
G.2 Pulse waveform transfor mation . 28
History . 30

ETSI

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5 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This draft European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE),
and is now submitted for the combined Public Enquiry and Vote phase of the ETSI standards EN Approval Procedure.
The present document is part 1 of a multi-part deliverable covering Environmental Engineering (EE); Power supply
interface at the input to Information and Communication Technology (ICT) equipment, as identified below:
Part 1: "Alternating Current (AC)";
Part 2: "-48 V Direct Current (DC)";
Part 3: "Up to 400 V Direct Current (DC)";

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

ETSI

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6 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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7 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
1 Scope
The present document contains requirements for the input of the ICT equipment connected to interface "A1".
The voltage at interface "A1" defined in the present document is single phase and three phase AC.
The following voltage range categories are covered:
• Narrow single phase "A1" and narrow three phase "A1" AC voltage range defined to comply with
n-1p n-3p
nominal European AC voltages defined in IEC 60038 [i.2].
• Wide single phase "A1" and wide three phase "A1" AC voltage range for worldwide nominal AC
w-1p w-3p
voltages. This wide voltage range is based on the nominal voltages defined in IEC 60038 [i.2].

The present document aims at providing compatibility between the power supply equipment and both the ICT equipment,
and the different load units connected to the same interface "A1" (e.g. control/monitoring, cooling system, etc.).
The purpose of the present document is:
• to identify a power supply system with the same characteristics for all ICT equipment defined in the area of
application; the area of application may be any location where the interface "A1" is used i.e.
telecommunication centres, Radio Base Stations, datacentres and customer premises;
• to facilitate interworking of different (types of) loads;
• to facilitate the standardization of power supply systems for ICT equipment;
• to facilitate the installation, operation and maintenance in the same network of ICT equipment and systems
from different origins. General requirements for safety and EMC are out of the scope of the present document
series unless specific requirement not defined in existing safety or EMC standards.
The present document concerns the requirements for the interface between Information and Communication
Technology (ICT) equipment and its power supply. It includes requirements relating to its stability and measurement.
Various other references and detailed measurement and test arrangements are contained in informative annexes.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] IEC 60947-2: "Low-voltage switchgear and controlgear - Part 2: Circuit-breakers".
[2] IEC 60269-1: "Low-voltage fuses - Part 1: General requirements".
[3] IEC 61000-4-5:2014+AMD1:2017: "Electromagnetic compatibility (EMC) - Part 4-5: Testing and
measurement techniques - Surge immunity test".
ETSI

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8 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
[4] IEC 61000-4-11:2020: "Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests
for equipment with input current up to 16 A per phase".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI ETS 300 132-1 (Edition 1): "Equipment Engineering (EE); Power supply interface at the
input to telecommunications equipment; Part 1: Operated by alternating current (ac) derived from
direct current (dc) sources".
[i.2] IEC 60038:2009+AMD1:2021: "IEC standard voltages".
[i.3] IEC 60050-601: "International Electrotechnical Vocabulary (IEV) Part 601: Generation,
transmission and distribution of electricity - General".
[i.4] Void.
[i.5] Void.
[i.6] Void.
[i.7] Void.
[i.8] IEC 60445: "Basic and safety principle for man-machine interface, marking and
identification - Identification of equipment terminals, conductor terminations and conductors".
[i.9] IEC 60898-1:2015: "Electrical accessories - Circuit-breakers for overcurrent protection for
household and similar installations - Part 1: Circuit-breakers for a.c. operation".
[i.10] IEC 60898-2: "Electrical accessories - Circuit-breakers for overcurrent protection for household
and similar installations - Part 2: Circuit-breakers for AC and DC operation".
[i.11] IEC 60364 series: "Low-voltage electrical installations".
[i.12] IEC 62040 series: "Uninterruptible power systems (UPS)".
[i.13] IEC 60050-351:2006: "International Electrotechnical Vocabulary (IEV) - Part 351: Control
technology".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
abnormal service voltage ranges: steady-state voltage ranges over which the ICT equipment will not be expected to
maintain normal service but will survive undamaged
area of application: any location where the interface "A1" is used i.e. telecommunication centres, Radio Base Stations,
datacentres and customer premises
customer premises: location which is the sole responsibility of the customer
ETSI

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9 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
ICT equipment: device, in the telecommunication network infrastructure, that provides an ICT service
interface A: interface, physical point, at which -48 VDC power supply is connected in order to operate the ICT
equipment
interface "A1": interface, physical point, at which AC power supply is connected in order to operate the ICT
equipment
NOTE: "A1" and "A1" are used for different voltage ranges: narrow and wide respectively.
n w
interface A3: interface, physical point, at which 400 VDC power supply is connected in order to operate the ICT
equipment
load unit: power consuming equipment, that is part of a system block
nominal voltage: value of the voltage by which the electrical installation or part of the electrical installation is
designated and identified
NOTE: This definition is based on IEC 60050-601 [i.3].
normal service: service mode where ICT equipment operates within its specification
normal service voltage range: range of the steady-state voltage at the "A1" interface over which the equipment will
maintain normal service
power supply: power supply to which ICT equipment is intended to be connected
reference test voltage: voltage used as a reference to define the test voltage in the present document
NOTE: The test voltage may be also a percentage of this voltage.
system block: functional group of ICT equipment depending for its operation and performance on its connection to the
same power supply
steady-state: state of a system at which all state and output variables remain constant in time while all input variables
are constant
NOTE: This definition is numbered 351-24-09 in IEC 60050-351:2006 [i.13].
telecommunication centre: any location where ICT equipment is installed and is the sole responsibility of the operator
3.2 Symbols
For the purposes of the present document, the following symbols apply:
"A1" Single phase narrow voltage range at interface "A1"
n-1p
"A1" Three phase narrow voltage range at interface "A1"
n-3p
"A1" Single phase wide voltage range at interface "A1"
w-1p
"A1" Three phase wide voltage range at interface "A1"
w-3p
I Maximum steady state current drain at interface "A1"
m
I Instantaneous surge current at interface "A1"
t
I Maximum input current (at AC RMS), stated by the manufacturer, for a fully-equipped and loaded
UT
system block behind interface "A1"
U Reference test voltage for narrow voltage range
T
U Minimum reference test voltage for wide voltage range for single phase or 3 phase line to neutral
TW1min
U Maximum reference test voltage for wide voltage range for single phase or 3 phase line to neutral
TW1max
U Minimum reference test voltage for wide voltage range for 3 phase
TW2min
U Maximum reference test voltage for wide voltage range for 3 phase
TW2max
ETSI

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10 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
NOTE: Also when used as a suffix to units of measurement.
DC Direct Current
NOTE: Also when used as a suffix to units of measurement.
EMC ElectroMagnetic Compatibility
EUT Equipment Under Test
ICT Information and Communication Technology
L Phase conductor
LISN Line Impedance Stabilization Networks
N Neutral conductor
PE Protective Earth
RMS Root Mean Square
UPS Uninterruptible Power Supply
VAC Volts Alternating Current
VDC Volts Direct Current
4 Power Interface "A1"
The power supply interface, interface "A1" of figure 1, is a physical point to which all the requirements are related. This
point is situated between the power supply system(s) and the power consuming ICT equipment of the area of
application defined in the scope of the present document.
An example of configurations in which interface "A1" is identified is given in annex B.
Interface "A1" is located at the power terminals of the ICT equipment or system as defined by the manufacturer in
accordance to IEC 60445 [i.8].
NOTE 1: Subject to the installation preconditions, this point may be located at any other point between the power
supply system and the ICT equipment by mutual agreement of the relevant parties.
NOTE 2: The power supply can be derived from AC grid e.g. through AC bypass of UPS or inverters.
ETSI

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11 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
ICT Equipment
A1

(L) Live AC terminal in single phase supply.
(N) Neutral AC terminal.
PE Protective Earth.

ICT Equipment
A1

(L1, L2, L3) Live AC terminals in 3 phases supply.
(N) Optional Neutral AC terminal.
PE Protective Earth.
ETSI

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12 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)

(L1, L2) Live AC terminals in 2 phases supply.
PE Protective Earth.

Figure 1: General identification of the interface "A1" in single, dual and 3 phase AC supply
5 AC interface requirements "A1"
5.0 Introduction
The definition of the AC interface voltages ranges and typical operating voltage values are defined in the following
subclauses of clause 5.
5.1 Nominal voltage at interface "A1"
In Europe, the AC input voltage of the ICT equipment shall comply with the nominal single phase voltage of 230 V AC
and for three phase it shall comply with 400 V AC at a power frequency of 50 Hz.
NOTE 1: Nominal voltage as defined in table 1 of IEC 60038 [i.2].
ICT equipment intended for worldwide use is recommended to comply with nominal voltages and frequencies defined
in table 1 of the present document.
NOTE 2: Nominal voltages as defined in table 1 of the present document and table 6 of IEC 60038 [i.2], except for
115 V and 127 V AC single phase which is also used in some countries.
Table 1: Nominal voltages
AC Single phase voltages (50 Hz or 60 Hz) AC Three phase voltages (50 Hz or 60 Hz)
100, 110, 115, 120, 127, 200, 220, 230, 240 200, 208, 220, 240, 380, 400, 415

ETSI

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13 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
5.2 Normal service voltage range categories at interface "A1"
The normal service voltage range categories at powering interface "A1" of ICT equipment shall be as follows:
• Normal service voltage range (Narrow) - Single phase ("A1" ): 197 - 253 VAC RMS (line to neutral)
n-1p
NOTE 1: The minimum voltage at interface "A1" is calculated as 230 V nominal -10 % at the incoming supply
n-1p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 2: The maximum voltage at interface "A1" is calculated as 230 V nominal +10 %.
n-1p
• Normal service voltage range (Narrow) - Three phase ("A1" ): 344 – 440 VAC RMS (line to line)
n-3p
NOTE 3: The minimum voltage at interface "A1" is calculated as 400 V nominal -10 % at the incoming supply
3p-n
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 4: The maximum voltage at interface "A1" is calculated as 400 V nominal +10 %.
3p-n
• Normal service voltage range (wide) Single phase ("A1" ) 86-264 VAC (line to neutral)
w-1p
NOTE 5: The minimum voltage at interface "A1" is calculated as 100 V nominal -10 % at the incoming supply
w-1p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 6: The maximum voltage at interface "A1" is calculated as 240 V nominal +10 %.
w-1p
• Normal service voltage range (wide) - Three phase ("A1" ) 172-456 VAC (line to neutral)
w-3p
NOTE 7: The minimum voltage at interface "A1" is calculated as 200 V nominal -10 % at the incoming supply
w-3p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 8: The maximum voltage at interface "A1" is calculated as 415 V nominal +10 %.
w-3p
5.3 Reference test voltage at interface "A1"
The reference test voltage (U ) for ICT equipment shall be:
T
1) U = 230 V for single phase or 3 phase line to neutral equipment (test voltage for narrow voltage range)
T
2) U = 400 V for three phase equipment (test voltage for narrow voltage range line to line)
T
Two test voltages shall be used for wide voltage range equipment:
1) U = 100 and U = 240 V for single phase or 3 phase line to neutral equipment (test voltage for
TW1min TW1max
wide voltage range)
2) U = 200 and U = 415 V for three phase equipment (test voltage for wide voltage range line to
TW2min TW2max
line)
NOTE: The powering solution should work in any site even with very long power cables i.e. U at the input of
T
ICT equipment is lower than power supply output. For constant power ICT equipment, the current is
increasing as a function of decreasing voltage.
ETSI

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14 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
5.4 Abnormal service voltage ranges at interface "A1"
The ICT equipment may be subject to steady state voltage out of the normal service voltage range. Limits of abnormal
service voltage range are defined as follows:
• 0 V < U < 197 V for narrow range single phase (line to neutral interface)
• 0 V < U < 86 V for wide range single phase (line to neutral interface)
• 0 V < U < 344 V for narrow range three phase (line to line interface)
• 0 V < U < 172 V for wide range three phase (line to line interface)
After the restoration of the supply from the abnormal service voltage range to the normal service voltage range, the ICT
equipment shall fulfil the following performance criteria:
• the ICT equipment shall not suffer any damage;
• the ICT equipment shall be able to automatically resume operation according to its specifications when the
voltage comes back into the normal service voltage range.
NOTE: The second criterion implies that abnormal service voltage should not lead to the disconnection of power
supply units e.g. by causing circuit breakers, fuses or other such devices to operate.
6 Voltage variations, voltage dips, short interruptions
and voltage surges at interface "A1"
6.0 Introduction
Under abnormal conditions, voltage values outside the normal service voltage range may occur for shor
...

SLOVENSKI STANDARD
oSIST prEN 300 132-1 V2.1.6:2022
01-oktober-2022
Okoljski inženiring (EE) - Napajalni vmesnik na vhodu v opremo informacijske in
komunikacijske tehnologije (IKT) - 1. del: Izmenični tok (AC)
Environmental Engineering (EE) - Power supply interface at the input to Information and
Communication Technology (ICT) equipment - Part 1: Alternating Current (AC)
Ta slovenski standard je istoveten z: ETSI EN 300 132-1 V2.1.6 (2022-08)
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
oSIST prEN 300 132-1 V2.1.6:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 300 132-1 V2.1.6:2022

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oSIST prEN 300 132-1 V2.1.6:2022
Draft ETSI EN 300 132-1 V2.1.6 (2022-08)






EUROPEAN STANDARD
Environmental Engineering (EE);
Power supply interface at the input to
Information and Communication Technology (ICT)
equipment;
Part 1: Alternating Current (AC)

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oSIST prEN 300 132-1 V2.1.6:2022
 2 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)

Reference
REN/EE-02102
Keywords
environment, interface, power supply
ETSI
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© ETSI 2022.
All rights reserved.

ETSI

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oSIST prEN 300 132-1 V2.1.6:2022
 3 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 10
4 Power Interface "A1" . 10
5 AC interface requirements "A1" . 12
5.0 Introduction . 12
5.1 Nominal voltage at interface "A1" . 12
5.2 Normal service voltage range categories at interface "A1" . 13
5.3 Reference test voltage at interface "A1" . 13
5.4 Abnormal service voltage ranges at interface "A1" . 14
6 Voltage variations, voltage dips, short interruptions and voltage surges at interface "A1" . 14
6.0 Introduction . 14
6.1 Voltage variations. 15
6.2 Voltages dips . 16
6.3 Short interruptions . 16
6.4 Voltage surges . 17
7 AC Supply protection on interface "A1" . 18
8 Maximum steady state current Im in the normal service voltage range at interface "A1" . 18
9 Inrush current on interface "A1" . 18
9.1 Limits . 18
9.2 Measurement method . 19
9.3 Protective device ratings . 20
10 Earthing and Bonding . 20
11 Electrical Safety requirements . 20
12 EMC requirements at the input of ICT equipment . 20
Annex A (informative): ICT power supply configurations providing a unified power interface
in the present document . 21
Annex B (normative): Identification of interface "A1" . 23
Annex C (informative): Calculation of the extreme AC voltage range at interface "A1" . 24
Annex D (informative): Dimensioning of over-current protective devices . 25
Annex E (normative): Test generator for voltage dips, short interruptions and voltage
variations . 26
Annex F (informative): Details of the voltage surges measurement in the most common case
of distribution and protective devices . 27
ETSI

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oSIST prEN 300 132-1 V2.1.6:2022
 4 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Annex G (informative): Guide for measuring inrush current and for transferring the
recorded pulses onto the limit chart . 28
G.1 Measurement . 28
G.2 Pulse waveform transfor mation . 28
History . 30

ETSI

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oSIST prEN 300 132-1 V2.1.6:2022
 5 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This draft European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE),
and is now submitted for the combined Public Enquiry and Vote phase of the ETSI standards EN Approval Procedure.
The present document is part 1 of a multi-part deliverable covering Environmental Engineering (EE); Power supply
interface at the input to Information and Communication Technology (ICT) equipment, as identified below:
Part 1: "Alternating Current (AC)";
Part 2: "-48 V Direct Current (DC)";
Part 3: "Up to 400 V Direct Current (DC)";

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

ETSI

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oSIST prEN 300 132-1 V2.1.6:2022
 6 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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oSIST prEN 300 132-1 V2.1.6:2022
 7 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
1 Scope
The present document contains requirements for the input of the ICT equipment connected to interface "A1".
The voltage at interface "A1" defined in the present document is single phase and three phase AC.
The following voltage range categories are covered:
• Narrow single phase "A1" and narrow three phase "A1" AC voltage range defined to comply with
n-1p n-3p
nominal European AC voltages defined in IEC 60038 [i.2].
• Wide single phase "A1" and wide three phase "A1" AC voltage range for worldwide nominal AC
w-1p w-3p
voltages. This wide voltage range is based on the nominal voltages defined in IEC 60038 [i.2].

The present document aims at providing compatibility between the power supply equipment and both the ICT equipment,
and the different load units connected to the same interface "A1" (e.g. control/monitoring, cooling system, etc.).
The purpose of the present document is:
• to identify a power supply system with the same characteristics for all ICT equipment defined in the area of
application; the area of application may be any location where the interface "A1" is used i.e.
telecommunication centres, Radio Base Stations, datacentres and customer premises;
• to facilitate interworking of different (types of) loads;
• to facilitate the standardization of power supply systems for ICT equipment;
• to facilitate the installation, operation and maintenance in the same network of ICT equipment and systems
from different origins. General requirements for safety and EMC are out of the scope of the present document
series unless specific requirement not defined in existing safety or EMC standards.
The present document concerns the requirements for the interface between Information and Communication
Technology (ICT) equipment and its power supply. It includes requirements relating to its stability and measurement.
Various other references and detailed measurement and test arrangements are contained in informative annexes.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] IEC 60947-2: "Low-voltage switchgear and controlgear - Part 2: Circuit-breakers".
[2] IEC 60269-1: "Low-voltage fuses - Part 1: General requirements".
[3] IEC 61000-4-5:2014+AMD1:2017: "Electromagnetic compatibility (EMC) - Part 4-5: Testing and
measurement techniques - Surge immunity test".
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[4] IEC 61000-4-11:2020: "Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests
for equipment with input current up to 16 A per phase".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI ETS 300 132-1 (Edition 1): "Equipment Engineering (EE); Power supply interface at the
input to telecommunications equipment; Part 1: Operated by alternating current (ac) derived from
direct current (dc) sources".
[i.2] IEC 60038:2009+AMD1:2021: "IEC standard voltages".
[i.3] IEC 60050-601: "International Electrotechnical Vocabulary (IEV) Part 601: Generation,
transmission and distribution of electricity - General".
[i.4] Void.
[i.5] Void.
[i.6] Void.
[i.7] Void.
[i.8] IEC 60445: "Basic and safety principle for man-machine interface, marking and
identification - Identification of equipment terminals, conductor terminations and conductors".
[i.9] IEC 60898-1:2015: "Electrical accessories - Circuit-breakers for overcurrent protection for
household and similar installations - Part 1: Circuit-breakers for a.c. operation".
[i.10] IEC 60898-2: "Electrical accessories - Circuit-breakers for overcurrent protection for household
and similar installations - Part 2: Circuit-breakers for AC and DC operation".
[i.11] IEC 60364 series: "Low-voltage electrical installations".
[i.12] IEC 62040 series: "Uninterruptible power systems (UPS)".
[i.13] IEC 60050-351:2006: "International Electrotechnical Vocabulary (IEV) - Part 351: Control
technology".
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
abnormal service voltage ranges: steady-state voltage ranges over which the ICT equipment will not be expected to
maintain normal service but will survive undamaged
area of application: any location where the interface "A1" is used i.e. telecommunication centres, Radio Base Stations,
datacentres and customer premises
customer premises: location which is the sole responsibility of the customer
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ICT equipment: device, in the telecommunication network infrastructure, that provides an ICT service
interface A: interface, physical point, at which -48 VDC power supply is connected in order to operate the ICT
equipment
interface "A1": interface, physical point, at which AC power supply is connected in order to operate the ICT
equipment
NOTE: "A1" and "A1" are used for different voltage ranges: narrow and wide respectively.
n w
interface A3: interface, physical point, at which 400 VDC power supply is connected in order to operate the ICT
equipment
load unit: power consuming equipment, that is part of a system block
nominal voltage: value of the voltage by which the electrical installation or part of the electrical installation is
designated and identified
NOTE: This definition is based on IEC 60050-601 [i.3].
normal service: service mode where ICT equipment operates within its specification
normal service voltage range: range of the steady-state voltage at the "A1" interface over which the equipment will
maintain normal service
power supply: power supply to which ICT equipment is intended to be connected
reference test voltage: voltage used as a reference to define the test voltage in the present document
NOTE: The test voltage may be also a percentage of this voltage.
system block: functional group of ICT equipment depending for its operation and performance on its connection to the
same power supply
steady-state: state of a system at which all state and output variables remain constant in time while all input variables
are constant
NOTE: This definition is numbered 351-24-09 in IEC 60050-351:2006 [i.13].
telecommunication centre: any location where ICT equipment is installed and is the sole responsibility of the operator
3.2 Symbols
For the purposes of the present document, the following symbols apply:
"A1" Single phase narrow voltage range at interface "A1"
n-1p
"A1" Three phase narrow voltage range at interface "A1"
n-3p
"A1" Single phase wide voltage range at interface "A1"
w-1p
"A1" Three phase wide voltage range at interface "A1"
w-3p
I Maximum steady state current drain at interface "A1"
m
I Instantaneous surge current at interface "A1"
t
I Maximum input current (at AC RMS), stated by the manufacturer, for a fully-equipped and loaded
UT
system block behind interface "A1"
U Reference test voltage for narrow voltage range
T
U Minimum reference test voltage for wide voltage range for single phase or 3 phase line to neutral
TW1min
U Maximum reference test voltage for wide voltage range for single phase or 3 phase line to neutral
TW1max
U Minimum reference test voltage for wide voltage range for 3 phase
TW2min
U Maximum reference test voltage for wide voltage range for 3 phase
TW2max
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3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
NOTE: Also when used as a suffix to units of measurement.
DC Direct Current
NOTE: Also when used as a suffix to units of measurement.
EMC ElectroMagnetic Compatibility
EUT Equipment Under Test
ICT Information and Communication Technology
L Phase conductor
LISN Line Impedance Stabilization Networks
N Neutral conductor
PE Protective Earth
RMS Root Mean Square
UPS Uninterruptible Power Supply
VAC Volts Alternating Current
VDC Volts Direct Current
4 Power Interface "A1"
The power supply interface, interface "A1" of figure 1, is a physical point to which all the requirements are related. This
point is situated between the power supply system(s) and the power consuming ICT equipment of the area of
application defined in the scope of the present document.
An example of configurations in which interface "A1" is identified is given in annex B.
Interface "A1" is located at the power terminals of the ICT equipment or system as defined by the manufacturer in
accordance to IEC 60445 [i.8].
NOTE 1: Subject to the installation preconditions, this point may be located at any other point between the power
supply system and the ICT equipment by mutual agreement of the relevant parties.
NOTE 2: The power supply can be derived from AC grid e.g. through AC bypass of UPS or inverters.
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ICT Equipment
A1

(L) Live AC terminal in single phase supply.
(N) Neutral AC terminal.
PE Protective Earth.

ICT Equipment
A1

(L1, L2, L3) Live AC terminals in 3 phases supply.
(N) Optional Neutral AC terminal.
PE Protective Earth.
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(L1, L2) Live AC terminals in 2 phases supply.
PE Protective Earth.

Figure 1: General identification of the interface "A1" in single, dual and 3 phase AC supply
5 AC interface requirements "A1"
5.0 Introduction
The definition of the AC interface voltages ranges and typical operating voltage values are defined in the following
subclauses of clause 5.
5.1 Nominal voltage at interface "A1"
In Europe, the AC input voltage of the ICT equipment shall comply with the nominal single phase voltage of 230 V AC
and for three phase it shall comply with 400 V AC at a power frequency of 50 Hz.
NOTE 1: Nominal voltage as defined in table 1 of IEC 60038 [i.2].
ICT equipment intended for worldwide use is recommended to comply with nominal voltages and frequencies defined
in table 1 of the present document.
NOTE 2: Nominal voltages as defined in table 1 of the present document and table 6 of IEC 60038 [i.2], except for
115 V and 127 V AC single phase which is also used in some countries.
Table 1: Nominal voltages
AC Single phase voltages (50 Hz or 60 Hz) AC Three phase voltages (50 Hz or 60 Hz)
100, 110, 115, 120, 127, 200, 220, 230, 240 200, 208, 220, 240, 380, 400, 415

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5.2 Normal service voltage range categories at interface "A1"
The normal service voltage range categories at powering interface "A1" of ICT equipment shall be as follows:
• Normal service voltage range (Narrow) - Single phase ("A1" ): 197 - 253 VAC RMS (line to neutral)
n-1p
NOTE 1: The minimum voltage at interface "A1" is calculated as 230 V nominal -10 % at the incoming supply
n-1p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 2: The maximum voltage at interface "A1" is calculated as 230 V nominal +10 %.
n-1p
• Normal service voltage range (Narrow) - Three phase ("A1" ): 344 – 440 VAC RMS (line to line)
n-3p
NOTE 3: The minimum voltage at interface "A1" is calculated as 400 V nominal -10 % at the incoming supply
3p-n
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 4: The maximum voltage at interface "A1" is calculated as 400 V nominal +10 %.
3p-n
• Normal service voltage range (wide) Single phase ("A1" ) 86-264 VAC (line to neutral)
w-1p
NOTE 5: The minimum voltage at interface "A1" is calculated as 100 V nominal -10 % at the incoming supply
w-1p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 6: The maximum voltage at interface "A1" is calculated as 240 V nominal +10 %.
w-1p
• Normal service voltage range (wide) - Three phase ("A1" ) 172-456 VAC (line to neutral)
w-3p
NOTE 7: The minimum voltage at interface "A1" is calculated as 200 V nominal -10 % at the incoming supply
w-3p
terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within
the building.
NOTE 8: The maximum voltage at interface "A1" is calculated as 415 V nominal +10 %.
w-3p
5.3 Reference test voltage at interface "A1"
The reference test voltage (U ) for ICT equipment shall be:
T
1) U = 230 V for single phase or 3 phase line to neutral equipment (test voltage for narrow voltage range)
T
2) U = 400 V for three phase equipment (test voltage for narrow voltage range line to line)
T
Two test voltages shall be used for wide voltage range equipment:
1) U = 100 and U = 240 V for single phase or 3 phase line to neutral equipment (test voltage for
TW1min TW1max
wide voltage range)
2) U = 200 and U = 415 V for three phase equipment (test voltage for wide voltage range line to
TW2min TW2max
line)
NOTE: The powering solution should work in any site even with very long power cables i.e. U at the input of
T
ICT equipment is lower than power supply output. For constant power ICT equipment, the current is
increasing as a function of decreasing voltage.
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