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

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

REN/EE-02102

Okoljski inženiring (EE) - Napajalni vmesnik na vhodu v opremo informacijske in komunikacijske tehnologije (IKT) - 1. del: Izmenični tok (AC)

General Information

• Status: Not Published
• Technical Committee: EE 2 - EE Power Supply
• Current Stage: 9 - Start of OAP
• Due Date: 01-Aug-2022
• Completion Date: 01-Aug-2022
• Ref Project: oSIST prEN 300 132-1 V2.1.6:2022 - Environmental Engineering (EE) - Power supply interface at the input to Information and Communication Technology (ICT) equipment - Part 1: Alternating Current (AC)

Standards Content (sample)

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
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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
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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".
ETSI
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oSIST prEN 300 132-1 V2.1.6:2022
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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oSIST prEN 300 132-1 V2.1.6:2022
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"
I Instantaneous surge current at interface "A1"

I Maximum input current (at AC RMS), stated by the manufacturer, for a fully-equipped and loaded

system block behind interface "A1"
U Reference test voltage for narrow voltage range

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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oSIST prEN 300 132-1 V2.1.6:2022
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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oSIST prEN 300 132-1 V2.1.6:2022
11 Draft ETSI EN 300 132-1 V2.1.6 (2022-08)
ICT Equipment
(L) Live AC terminal in single phase supply.
(N) Neutral AC terminal.
PE Protective Earth.
ICT Equipment
(L1, L2, L3) Live AC terminals in 3 phases supply.
(N) Optional Neutral AC terminal.
PE Protective Earth.
ETSI
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oSIST prEN 300 132-1 V2.1.6:2022
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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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:

1) U = 230 V for single phase or 3 phase line to neutral equipment (test voltage for narrow voltage range)

2) U = 400 V for three phase equipment (test voltage for narrow voltage range line to line)

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

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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