SIST EN 50310:2016/A1:2020
(Amendment)Telecommunications bonding networks for buildings and other structures
Telecommunications bonding networks for buildings and other structures
This project will implement some changes to EN 50310:2016.
Anwendung von Maßnahmen für Erdung und Potentialausgleich in Gebäuden mit Einrichtungen der Informationstechnik
Application de liaison équipotentielle et de la mise à la terre dans les locaux avec équipement de technologie de l'information
Izenačitev potencialov in ozemljevanje v stavbah z opremo informacijske tehnologije - Dopolnilo A1
General Information
Relations
Overview
EN 50310:2016/A1:2020 (CLC) is an amendment to the European standard that governs telecommunications bonding networks for buildings and other structures. The amendment clarifies terms, updates normative references and refines performance and testing requirements to improve electromagnetic compatibility, safety and system reliability for information technology (IT) and power systems co-located in buildings.
This standard focuses on how bonding networks (protective, dedicated and mesh bonded) interact with cabling, power distribution and lightning protection, and it provides guidance for designers, installers and facility managers responsible for building infrastructure.
Key Topics
- Mesh bonded networks: Identified as the most effective solution at high frequency (>= 1 MHz) and also effective at low frequency (< 1 MHz). The mesh approach enhances EMI immunity and flexibility for cabling and equipment placement.
- Performance targets: The mesh is intended to achieve approximately 1 mΩ DC resistance between adjacent grid points and an inductance of no more than about 6 µH between adjacent points, mitigating steady-state and transient voltages and currents from lightning and power faults.
- Updated definitions: Adds explicit definitions for high frequency (>= 1 MHz) and low frequency (< 1 MHz) to clarify frequency-dependent performance expectations.
- Revised resistance requirements: Tables for DC resistance limits were updated. Example requirements in the amendment include 2.5 mΩ/m for certain protective busbar connections and 1.67 mΩ/m for key telecommunications bonding connections (any point to MET, PBB to SBB, and PBB/SBB to structural steel).
- Testing and measurement: Tests shall use equipment conforming to EN 61557-4 or EN 61557-5, with measured accuracy reported in test documentation.
- Integration with lightning protection: Mesh bonded networks can be used with integrated lightning protection per EN 62305-4; other lightning protection systems may be used with agreed restrictions.
Applications
- New building design and major refurbishments where mesh bonding networks can be implemented most easily.
- Existing buildings where an assessment balances cost, complexity and the required transmission performance for the chosen cabling and applications.
- Facilities requiring enhanced EMI immunity for sensitive IT systems, telecoms rooms, data centres and mixed IT/power environments.
Benefits include improved system resilience to EMI and lightning, clearer testing requirements, and harmonised bonding practices that support modern cabling and IT applications.
Related Standards
- EN 61557-4, EN 61557-5 - equipment for testing resistance of earth connections and equipotential bonding
- EN 62305 (all parts) - protection against lightning
- HD 60364-4-444 - additional guidance on TN-S power distribution and equipotential bonding
- EN 50174 series and EN 50173 series - cabling planning and installation guidance
For designers and installers, EN 50310:2016/A1:2020 provides practical, updated criteria to assess and implement effective telecommunications bonding networks that reduce EMI risk and support reliable IT and power integration in buildings.
Frequently Asked Questions
SIST EN 50310:2016/A1:2020 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Telecommunications bonding networks for buildings and other structures". This standard covers: This project will implement some changes to EN 50310:2016.
This project will implement some changes to EN 50310:2016.
SIST EN 50310:2016/A1:2020 is classified under the following ICS (International Classification for Standards) categories: 35.020 - Information technology (IT) in general; 91.140.50 - Electricity supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 50310:2016/A1:2020 has the following relationships with other standards: It is inter standard links to SIST EN 50310:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 50310:2016/A1:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2020
Izenačitev potencialov in ozemljevanje v stavbah z opremo informacijske
tehnologije - Dopolnilo A1
Telecommunications bonding networks for buildings and other structures
Anwendung von Maßnahmen für Erdung und Potentialausgleich in Gebäuden mit
Einrichtungen der Informationstechnik
Application de liaison équipotentielle et de la mise à la terre dans les locaux avec
équipement de technologie de l'information
Ta slovenski standard je istoveten z: EN 50310:2016/A1:2020
ICS:
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50310:2016/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2020
ICS 29.120.50; 91.140.50
English Version
Telecommunications bonding networks for buildings and other
structures
Application de liaison équipotentielle et de la mise à la terre Anwendung von Maßnahmen für Erdung und
dans les locaux avec équipement de technologie de Potentialausgleich in Gebäuden mit Einrichtungen der
l'information Informationstechnik
This amendment A1 modifies the European Standard EN 50310:2016; it was approved by CENELEC on 2019-12-13. CENELEC members
are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the status of a
national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50310:2016/A1:2020 E
Contents
European foreword . 3
1 Modifications to the Introduction . 3
2 Modifications to Clause 2, Normative references. 4
3 Modifications to Clause 3, Terms, definitions and abbreviations . 5
4 Modifications to Clause 4, Conformance . 5
5 Modifications to 6.1, Assessment of the impact of the telecommunications bonding
network on the interconnection of telecommunications equipment . 5
6 Modifications to 6.2, Telecommunications bonding networks . 6
7 Modifications to 6.3.1.1, Protective bonding networks . 6
8 Modification to 6.3.2.1, General requirements . 6
9 Modifications to Table 4 – DC resistance requirements for protective bonding networks . 6
10 Modifications to Table 5 – DC resistance requirements for dedicated telecommunications
bonding networks . 7
11 Modifications to 6.3.3.1, General . 7
12 Modifications to 7.4.1.2, Installation . 7
13 Modifications to 11.1, General . 7
14 Modifications to 11.6, System reference potential plane . 7
15 Modifications to the Bibliography . 8
European foreword
This document (EN 50310:2016/A1:2020) has been prepared by CLC/TC 215 “Electrotechnical
aspects of telecommunication equipment”.
The following dates are fixed:
• latest date by which this document has (dop) 2020-12-13
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2022-12-13
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
1 Modifications to the Introduction
Amend list of bullets in 4th paragraph as follows:
• replace “EN 50098 series” with “EN 50700”:
Replace Figure 1 with
Replace Table 1 with
Building design Generic cabling Specification Installation Operation phase
phase design phase phase phase
EN 50173-2 EN 50174-1
EN 50173-3
Planning phase
EN 50173-4
EN 50174-2
EN 50173-5
EN 50310 EN 50174-3 EN 50174-1
EN 50173-6
EN 50174-2
EN 50310
EN 50174-3
(these ENs
EN 50310
reference general
requirements of
EN 50173-1)
2 Modifications to Clause 2, Normative references
Add the following new references:
EN 61557-4, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth
connection and equipotential bonding (IEC 61557-4)
EN 61557-5, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or monitoring of protective measures - Part 5: Resistance to earth
(
...
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