SIST EN 300 132-1 V2.1.1:2019

SLOVENSKI STANDARD
SIST EN 300 132-1 V2.1.1:2019
01-maj-2019
Okoljski inženiring (EE) - Napajalni vmesnik na vhodu v opremo informacijske in
komunikacijske tehnologije (IKT) - 1. del: Obratovanje z izmenično napetostjo
virov

Environmental Engineering (EE) - Power supply interface at the input to Information and

Communication Technology (ICT) equipment - Part 1: Operated by Alternating Current

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology .................................................................................................................................... 5

1 Scope ........................................................................................................................................................ 6

2 References ................................................................................................................................................ 6

2.1 Normative references ......................................................................................................................................... 6

2.2 Informative references ........................................................................................................................................ 7

3 Definition of terms, symbols and abbreviations ....................................................................................... 7

3.1 Terms .................................................................................................................................................................. 7

3.2 Symbols .............................................................................................................................................................. 8

3.3 Abbreviations ..................................................................................................................................................... 8

4 Power Interface A1 ................................................................................................................................... 9

5 AC interface requirements A1 ................................................................................................................ 10

5.0 Introduction ...................................................................................................................................................... 10

5.1 Nominal voltage at interface A1 ....................................................................................................................... 11

5.2 Normal service voltage range categories at interface A1 .................................................................................. 11

5.3 Reference test voltage (U ) at interface A1 ...................................................................................................... 12

5.4 Abnormal service voltage ranges at interface A1 ............................................................................................. 12

6 Voltage variations, voltage dips, short interruptions and voltage surges at interface A1 ...................... 13

6.0 Introduction ...................................................................................................................................................... 13

6.1 Voltage variations............................................................................................................................................. 13

6.2 Voltages dips .................................................................................................................................................... 14

6.3 Short interruptions ............................................................................................................................................ 15

6.4 Voltage surges .................................................................................................................................................. 15

7 AC Supply protection on interface A1 ................................................................................................... 16

8 Maximum steady state current I in the normal service voltage range at interface A1 ......................... 17

9 Inrush current on interface A1 ................................................................................................................ 17

9.1 Limits ............................................................................................................................................................... 17

9.2 Measurement method ....................................................................................................................................... 18

9.3 Protective device ratings .................................................................................................................................. 19

10 Earthing and Bonding ............................................................................................................................. 19

11 Electrical Safety requirements ................................................................................................................ 19

12 EMC requirements at the input of ICT equipment ................................................................................. 19

Annex A (informative): ICT power supply configurations providing a unified power interface

in the present document ................................................................................ 20

Annex B (normative): Identification of interface A1 ........................................................................ 22

Annex C (informative): Calculation of the extreme AC voltage range at interface A1 ................... 23

Annex D (informative): Dimensioning of over-current protective devices ........................................ 24

Annex E (normative): Test generator for voltage dips, short interruptions and voltage

variations ........................................................................................................ 25

Annex F (informative): Details of the voltage surges measurement in the most common case

of distribution and protective devices .......................................................... 26

Annex G (informative): Guide for measuring inrush current and for transferring the

recorded pulses onto the limit chart ............................................................. 27

G.1 Measurement .......................................................................................................................................... 27

G.2 Pulse waveform transfor mation .............................................................................................................. 27

History .............................................................................................................................................................. 29

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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:

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

"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

The voltage at interface A1 defined in the present document is single phase and three phase AC.

• Narrow single phase A1 and narrow three phase A1 AC voltage range defined to comply with nominal

• Wide single phase A1 and wide three phase A1 AC voltage range for worldwide nominal AC voltages.

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.).

• 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

• 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.

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 documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

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".

[3] IEC 61000-4-5: "Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement

[4] IEC 61000-4-11: "Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement

techniques - Voltage dips, short interruptions and voltage variations immunity tests".

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

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

The following referenced documents are not necessary for the application of the present document but they assist the

[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

[i.3] IEC 60050-601: "International Electrotechnical Vocabulary. Chapter 601: Generation,

[i.5] ETSI EN 300 386: "Telecommunication network equipment; ElectroMagnetic Compatibility

(EMC) requirements; Harmonised Standard covering the essential requirements of the Directive

[i.7] CENELEC EN 62368-1 (Ed. 1.0): "Audio/Video, Information and Communication Technology

[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

abnormal service voltage ranges: steady-state voltage ranges over which the ICT equipment will not be expected to

area of application: any location where the interface A1 is used i.e. telecommunication centres, Radio Base Stations,

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

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.

interface A3: interface, physical point, at which 400 VDC power supply is connected in order to operate the ICT

nominal voltage: value of the voltage by which the electrical installation or part of the electrical installation is

NOTE: This definition is based on nominal voltage defined in 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

reference test voltage: voltage used as a reference to define the test voltage in the present document

system block: functional group of ICT equipment depending for its operation and performance on its connection to the

telecommunication centre: any location where ICT equipment is installed and is the sole responsibility of the operator

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

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

NOTE 1: Subject to the installation preconditions, this point may be located at any other point between the power

NOTE 2: The power supply can be derived from AC grid e.g. through AC bypass of UPS or inverters.

Figure 1: General identification of the interface A1 in single and 3 phase AC supply

The definition of the AC interface voltages ranges and typical operating voltage values are defined in the following

The nominal voltage is a definition used to enable differentiating power interfaces.

The nominal voltage for an AC sgrid source of 230 V single phase and 400 V three phase is defined according to

In addition, a wide worldwide nominal single phase AC voltage range from 100 V to 240 V is commonly used, along

The normal service voltage range categories at powering interface A1 of ICT equipment shall be as follows:

NOTE 1: The minimum voltage at interface A1 is calculated as 230 V nominal -10 % at the incoming supply

terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within

NOTE 2: The maximum voltage at interface A1 is calculated as 230 V nominal +10 %.

- optionally same voltage as narrow single phase minimum voltage for line to neutral interface.

- optionally same voltage as narrow single phase maximum voltage in case of line to neutral interface.

NOTE 3: The minimum voltage at interface A1 is calculated as 400 V nominal -10 % at the incoming supply

terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within

NOTE 4: The maximum voltage at interface A1 is calculated as 400 V nominal +10 %.

NOTE 5: The minimum voltage at interface A1 is calculated as 100 V nominal -10 % at the incoming supply

terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within

NOTE 6: The maximum voltage at interface A1 is calculated as 240 V nominal +10 %.

- optionally same voltage as narrow single phase minimum voltage for line to neutral interface.

- optionally same voltage as narrow single phase maximum voltage for line to neutral interface.

NOTE 7: The minimum voltage at interface A1 is calculated as 173 V nominal -10 % at the incoming supply

terminals of a building and a further -4 % maximum voltage drop allowance on the AC distribution within

NOTE 8: The maximum voltage at interface A1 is calculated as 415 V nominal +10 %.

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)

1) U = 100 and U = 240 V for single phase or 3 phase line to neutral equipment (test voltage for wide voltage

2) U = 173 and U = 415 V for three phase equipment (test voltage for wide voltage range line to 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

The ICT equipment may be subject to steady state voltage out of the normal service voltage range. Limits of abnormal

After the restoration of the supply from the abnormal service voltage range to the normal service voltage range, the ICT

• the ICT equipment shall be able to automatically resume operation according to its specifications when the

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.

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:

The tests for voltage dips, short interruption and voltage variations shall be conducted in accordance with standard

The tests for voltage surges shall be conducted in accordance with standard IEC 61000-4-5 [3].

Specific criteria to ICT equipment are defined in each test table below. The tests shall be performed on individual

The test shall be done at the test voltages corresponding to the voltage range of the product defined in clause 5.3.