SIST EN 300 132-3 V1.2.1:2006

• Abstract:

  The present document contains requirements for:; • the output performance of the power equipment at the interface A3;; • the input of the telecommunications equipment connected to interface A3.; The voltage at interface A3 may be the ac mains, a rectified voltage derived from ac three phase mains, a rectified voltage derived from ac single phase mains or a low voltage derived from a battery. The power supply equipment may incorporate a backup battery.; The present document aims at providing compatibility between the power supply equipment and both the telecommunications equipment, and the different load units connected to the same interface A3 (e.g. datacom equipment).; The requirements at interface A3 apply to:; • the output of the power supply equipment or power supply installation of telecommunications centres;; • the power supply input of telecommunications equipment and the datacom equipment installed at telecommunications centres;; • telecommunications equipment and the datacom equipment, installed in customer's premises, whose power interface A3 is also used by equipment requiring a supply to the present document. The purpose of the present document is:; • to identify a power supply system with the same characteristics for all telecommunications and data communication equipment defined in the area of application;; • to facilitate interworking of different (types of) loads units;; • to facilitate the standardization of power supply systems for telecommunications and datacom equipment;; • to facilitate the installation, operation and maintenance in the same network of equipment and telecommunications and datacom systems from different origins.

• Status: Published
• Publication Date: 31-Jan-2006
• ICS: 19.040 - Environmental testing
• ICS: 33.050.01 - Telecommunication terminal equipment in general
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2006
• Due Date: 01-Feb-2006
• Completion Date: 01-Feb-2006
• Ref Project: ETSI EN 300 132-3 V1.2.1 (2003-08) - Environmental Engineering (EE); Power supply interface at the input to telecommunications equipment; Part 3: Operated by rectified current source, alternating current source or direct current source up to 400 V

Overview

SIST EN 300 132-3 V1.2.1:2006 is a Slovenian adoption of a European standard developed by ETSI covering environmental engineering requirements for the power supply interface (Interface A3) at the input of telecommunications and datacom equipment. This document specifies requirements for equipment powered by rectified current sources, alternating current sources, or direct current sources with voltages up to 400 V. The focus is on ensuring compatibility and interworking between power supply equipment and a diverse range of telecommunications and data communication devices, both in central offices and customer premises.

By standardizing the power supply interface, this standard supports reliable operation, seamless integration, and interoperability of equipment from different manufacturers in telecommunication and datacom networks. Ensuring standardized voltage and compatibility is critical to minimize network downtime, optimize system performance, and facilitate efficient installation and maintenance.

Key Topics

• Power Supply Interface A3:
  Defines Interface A3 as the standardized point where power is delivered to telecommunications and datacom equipment.

• Voltage Types and Ranges:

  • Supports supplies from AC mains, rectified three-phase AC, rectified single-phase AC, and low-voltage batteries.
  • Specifies nominal voltage (230 V rms), and normal service voltage range (188 V rms to 375 V peak).

• Backup and Redundancy:
  Allows integration of backup batteries and uninterruptible power supplies (UPS) to ensure power continuity.

• Interworking & Compatibility:

  • Facilitates interoperability between various types of load units connected to the same power interface.
  • Ensures unified power supply characteristics for all relevant telecommunications and IT equipment.

• Safety, Earthing, and Protection:

  • Highlights the need for fuses or circuit breakers at the interface.
  • Recommends appropriate earthing and bonding in accordance with international standards.

• Current and Surge Requirements:

  • Defines maximum current drain and inrush (surge) current requirements for reliable operation and safety.
  • Specifies methods for measuring maximum and surge currents.

• Voltage Tolerance and EMC:

  • Sets guidelines for abnormal service voltage ranges, voltage dips, and transient events.
  • Refers to EMC standards for testing the interface against electromagnetic disturbances.

Applications

This standard is crucial for organizations involved in the design, installation, operation, and maintenance of telecommunications infrastructure and datacenters. Its applications include:

• Telecommunications Centers:
  Ensures that all power supply equipment and connected telecom/datacom devices in telecom facilities operate reliably and compatibly, regardless of manufacturer.

• Customer Premises Equipment (CPE):
  Ensures standardized power interface for networking equipment installed in business or residential buildings.

• Datacom and IT Infrastructure:
  Facilitates the integration of IT and communication equipment using various power sources, supporting network modernization and expansion.

• System Interoperability:
  Allows for the seamless integration of different types of load units, supporting scalability and easy upgrades.

• Operational Efficiency:
  Eases installation, operation, and maintenance by ensuring that power supply characteristics are consistent across the network.

Related Standards

For comprehensive power and safety compliance in telecommunications and data networks, the following standards are referenced or closely related:

• IEC 60364-4-44:
  Electrical installations of buildings - Protection against voltage disturbances and electromagnetic disturbances.

• IEC 60364-5-54:
  Electrical installations - Earthing arrangements and bonding.

• CENELEC HD 472 S1:
  Nominal voltage for low-voltage public electricity supply systems.

• CISPR 16-1:
  Specification for radio disturbance and immunity measuring apparatus and methods.

• EN 60950-1:
  Safety of information technology equipment.

• ETSI EG 201 212:
  Electrical safety classification for telecom network interfaces.

Adopting SIST EN 300 132-3 V1.2.1:2006 ensures robust, reliable, and interoperable power supply solutions for modern telecommunications and datacom networks, streamlining system integration and compliance with European and international best practices.

SLOVENSKI STANDARD
01-februar-2006
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Environmental Engineering (EE); Power supply interface at the input to
telecommunications equipment; Part 3: Operated by rectified current source, alternating
current source or direct current source up to 400 V
Ta slovenski standard je istoveten z: EN 300 132-3 Version 1.2.1
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
33.050.01 Telekomunikacijska Telecommunication terminal
terminalska oprema na equipment in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)

Environmental Engineering (EE);
Power supply interface at the input to
telecommunications equipment;
Part 3: Operated by rectified current source,
alternating current source or
direct current source up to 400 V

2 ETSI EN 300 132-3 V1.2.1 (2003-08)

Reference
DEN/EE-02001-3
Keywords
environment, interface, power supply
ETSI
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ETSI
3 ETSI EN 300 132-3 V1.2.1 (2003-08)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope.5
2 References.5
3 Definitions and abbreviations.6
3.1 Definitions.6
3.2 Abbreviations.6
4 Interface A3.7
5 Requirements.7
5.1 Nominal voltage.7
5.2 Normal service voltages at interface A3.8
5.3 Nominal frequencies.8
5.4 Abnormal service voltage ranges at interface A3.8
5.4.1 Abnormal service voltage under steady-state conditions.8
5.4.2 Voltage dips, short interruptions and transients.8
5.5 Supply protection.9
5.6 Maximum current drain.9
5.7 Surge current on connection to interface A3 .9
5.7.1 Limits.9
5.7.2 Measurements.10
6 Earthing and bonding .11
7 Electrical safety requirements .11
8 EMC requirements.11
Annex A (informative): Power supply considerations.12
A.1 Possible power supply configurations.12
A.2 Supply voltage waveforms .13
Annex B (informative): Identification of interface A3 .14
Annex C (informative): Calculation of the extreme voltage nominal values at interface A3 .15
Annex D (informative): Calculation of the extreme voltage nominal values at interface A3 in
the case of using other nominal voltage .16
Annex E (informative): Bibliography.17
History .18

ETSI
4 ETSI EN 300 132-3 V1.2.1 (2003-08)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is 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 (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, 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.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Environmental
Engineering (EE).
The present document concerns the requirements for the interface between telecommunications equipment and its
power supply and includes requirements relating to its stability and measurement. Various other references and detailed
measurement and test arrangements are contained in informative annexes.
The present document is part 3 of a multi-part deliverable covering Environmental Engineering (EE); Power supply
interface at the input to telecommunications equipment, as identified below:
Part 1: "Operated by alternating current (ac) derived from direct current (dc) sources";
Part 2: "Operated by direct current (dc)";
Part 3: "Operated by rectified current source, alternating current source or direct current source up to
400 V".
National transposition dates
Date of adoption of this EN: 25 July 2003
Date of latest announcement of this EN (doa): 31 October 2003
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 April 2004
Date of withdrawal of any conflicting National Standard (dow): 30 April 2004

ETSI
5 ETSI EN 300 132-3 V1.2.1 (2003-08)
1 Scope
The present document contains requirements for:
• the output performance of the power equipment at the interface A3;
• the input of the telecommunications equipment connected to interface A3.
The voltage at interface A3 may be the ac mains, a rectified voltage derived from ac three phase mains, a rectified voltage
derived from ac single phase mains or a low voltage derived from a battery. The power supply equipment may incorporate
a backup battery.
The present document aims at providing compatibility between the power supply equipment and both the
telecommunications equipment, and the different load units connected to the same interface A3 (e.g. datacom equipment).
The requirements at interface A3 apply to:
• the output of the power supply equipment or power supply installation of telecommunications centres;
• the power supply input of telecommunications equipment and the datacom equipment installed at
telecommunications centres;
• telecommunications equipment and the datacom equipment, installed in customer's premises, whose power
interface A3 is also used by equipment requiring a supply to the present document.
The purpose of the present document is:
• to identify a power supply system with the same characteristics for all telecommunications and data
communication equipment defined in the area of application;
• to facilitate interworking of different (types of) loads units;
• to facilitate the standardization of power supply systems for telecommunications and datacom equipment;
• to facilitate the installation, operation and maintenance in the same network of equipment and
telecommunications and datacom systems from different origins.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] IEC 60364-4-44: "Electrical installations of buildings - Part 4-44: Protection for safety - Protection
against voltage disturbances and electromagnetic disturbances".
[2] IEC 60364-5-54: "Electrical installations of buildings - Part 5-54: Selection and erection of
electrical equipment - Earthing arrangements, protective conductors and protective bonding
conductors".
[3] CENELEC HD 472 S1: "Nominal voltage for low-voltage public electricity supply systems".
ETSI
6 ETSI EN 300 132-3 V1.2.1 (2003-08)
[4] CISPR 16-1: "Specification for radio disturbance and immunity measuring apparatus and methods
Part 1: Radio disturbance and immunity measuring apparatus".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
abnormal voltage range: range of steady-state voltages over which the equipment will not be expected to maintain
normal service but will survive undamaged
customer premises: any location which is the sole responsibility of the customer
datacom equipment: information technology equipment
interface A3: interface, physical point, at which power supply is connected to the telecommunications and datacom
equipment
load unit: power consuming equipment, that is part of a system block
nominal load conditions: set of values dedicated to a test performance
nominal voltage value: nominal value of the voltage that designates the type of supply
normal service: service mode where telecommunications equipment operates within its specification
normal service voltage range: range of the steady-state voltage over which the equipment will maintain normal
service
power supply: power supply to which telecommunications equipment is intended to be connected
system block: functional group of equipment depending for its operation and performance on its connection to the same
power supply
telecommunication centre: any location where telecommunications equipment is installed and is the sole responsibility
of the operator
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current (also when used as a suffix to units of measurement)
AMN Artificial Mains Network
dc direct current (also when used as a suffix to units of measurement)
EUT Equipment Under Test
EMC Electric Magnetic Compatibility
Im maximum current
It Instantaneous surge current
LISN Line Impedance Stabilization Network
PE Protective Earth
R Resistance of resistive element of LISN
rms root mean square (also when used as a suffix to units of measurement)
UPS Uninterrupted Power Supply
ETSI
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