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EN 50522:2022/prA1:2024

(Amendment)

Earthing of power installations exceeding 1 kV a.c.

Earthing of power installations exceeding 1 kV a.c.

Modification to EN 50522:2022

Erdung von Starkstromanlagen mit Nennwechselspannungen über 1 kV

Prises de terre des installations électriques de puissance en courant alternatif de tension supérieure à 1 kV

Ozemljitev elektroenergetskih postrojev, ki presegajo 1 kV izmenične napetosti - Dopolnilo A1

General Information

Status
Not Published
Publication Date
29-May-2025
ICS
29.120.50 - Fuses and other overcurrent protection devices
Technical Committee
CLC/TC 99X - Power installations exceeding 1 kV a.c. (1,5 kV d.c.)
Drafting Committee
CLC/TC 99X - Power installations exceeding 1 kV a.c. (1,5 kV d.c.)
Current Stage
4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
Start Date
05-Apr-2024
Due Date
23-Oct-2024
Completion Date
05-Apr-2024
Ref Project
SIST EN 50522:2022/oprA1:2024 - Earthing of power installations exceeding 1 kV a.c.

Relations

Amends
EN 50522:2022 - Earthing of power installations exceeding 1 kV a.c.
Effective Date
15-Nov-2022

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EN 50522:2022/oprA1:2024EN 50522:2022/oprA1:2024
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SLOVENSKI STANDARD
SIST EN 50522:2022/oprA1:2024
01-marec-2024
Ozemljitev elektroenergetskih postrojev, ki presegajo 1 kV izmenične napetosti -
Dopolnilo A1
Earthing of power installations exceeding 1 kV a.c.
Erdung von Starkstromanlagen mit Nennwechselspannungen über 1 kV
Prises de terre des installations électriques de puissance en courant alternatif de tension
supérieure à 1 kV
Ta slovenski standard je istoveten z: EN 50522:2022/prA1:2024
ICS:
29.240.01 Omrežja za prenos in Power transmission and
distribucijo električne energije distribution networks in
na splošno general
SIST EN 50522:2022/oprA1:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50522:2022/oprA1:2024

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SIST EN 50522:2022/oprA1:2024


EUROPEAN STANDARD DRAFT
EN 50522:2022
NORME EUROPÉENNE

EUROPÄISCHE NORM
prA1
January 2024
ICS 29.120.50 -
English Version
Earthing of power installations exceeding 1 kV a.c.
To be completed To be completed
This draft amendment prA1, if approved, will modify the European Standard EN 50522:2022; it is submitted to CENELEC members for
enquiry.
Deadline for CENELEC: 2024-04-05.

It has been drawn up by CLC/TC 99X.

If this draft becomes an amendment, 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.

This draft amendment was established by CENELEC 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,
Türkiye and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.



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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 76984 Ref. No. EN 50522:2022/prA1:2024 E

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SIST EN 50522:2022/oprA1:2024
EN 50522:2022/prA1:2024 (E)
Contents Page
4 European foreword . 3
5 1 Modification to Clause 2, “Normative references” . 4
6 2 Modifications to Clause 3, “Terms and definitions” . 4
7 3 Modification to 4.1, “General requirements” . 5
8 4 Modifications to 4.2, “Electrical requirements”. 5
9 5 Modifications to 4.3, “Safety criteria” . 5
10 6 Modification to 4.4, “Functional requirements” . 5
11 7 Modifications to 5.4, “Dimensioning with regard to touch voltages” . 5
12 8 Modification to 6.1.1, “High and low voltage earthing systems” . 5
13 9 Modification to 6.1.2, “LV supply only within HV substations” . 5
14 10 Modification to 6.1.3, “LV supply leaving or coming to HV substations” . 6
15 11 Modification to 6.1.4, “LV in the proximity of HV substation” . 6
16 12 Modification to 7.1, “Installation of earth electrodes and earthing conductors” . 6
17 13 Modification to 7.2, “Lig
...

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This document is applicable to specify the requirements for the design and erection of earthing systems of electrical installations, in systems with nominal voltage above 1 kV AC and nominal frequency up to and including 60 Hz, so as to provide safety and proper functioning for the use intended. NOTE 1 The technical and procedural principles of this document can be applied when 3rd parties’ installations and facilities are planned and/or erected in the vicinity of HV electrical power installations. For the purpose of interpreting this document, an electrical power installation is considered to be one of the following: a) substation, including substation for railway power supply; b) electrical power installations on mast, pole and tower; switchgear and/or transformers located outside a closed electrical operating area; c) one (or more) power station(s) located on a single site; the electrical power installation includes generators and transformers with all associated switchgear and all electrical auxiliary systems. Connections between generating stations located on different sites are excluded; d) the electrical system of a factory, industrial plant or other industrial, agricultural, commercial or public premises; e) electrical power installations on offshore facilities for the purpose of generation, transmission, distribution and/or storage of electricity; f) transition towers/poles between overhead lines and underground lines. The electrical power installation includes, among others, the following equipment: — rotating electrical machines; — switchgear; — transformers and reactors; — converters; — cables; — wiring systems; — batteries; — capacitors; — earthing systems; — buildings and fences which are part of a closed electrical operating area; — associated protection, control and auxiliary systems; — large air core reactor. NOTE 2 In general, a standard for an item of equipment takes precedence over this document. This document does not apply to the design and erection of earthing systems of any of the following: — overhead and underground lines between separate installations; NOTE 3 The standard, EN 50341 series Overhead lines exceeding AC 1 kV, specifies requirements for the design and erection of earthing systems in overhead lines. — electrified railway tracks and rolling stock; — mining equipment and installations; — fluorescent lamp installations; — installations on ships and off-shore installations; — electrostatic equipment (e.g. electrostatic precipitators, spray-painting units); — test sites; — medical equipment, e.g. medical X-ray equipment. NOTE 4 The scope of this document does not include the requirements for carrying out live working on electrical power installations. NOTE 5 The scope of this document considers safety requirements for HV installations and its influences on LV installations. For electrical installation up to 1 kV, the standard IEC 60364 series applies.

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