SIST EN 50522:2022/A1:2024

SLOVENSKI STANDARD
01-november-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/A1:2024
ICS:
29.240.01 Omrežja za prenos in Power transmission and
distribucijo električne energije distribution networks in
na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50522:2022/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM September 2024
ICS 29.120.50
English Version
Earthing of power installations exceeding 1 kV a.c.
Prises de terre des installations électriques de puissance en Erdung von Starkstromanlagen mit
courant alternatif de tension supérieure à 1 kV Nennwechselspannungen über 1 kV
This amendment A1 modifies the European Standard EN 50522:2022; it was approved by CENELEC on 2024-07-02. 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,
Türkiye 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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50522:2022/A1:2024 E

Contents Page
European foreword . 3
1 Modification to Clause 2, “Normative references” . 4
2 Modifications to Clause 3, “Terms and definitions” . 4
3 Modification to 4.1, “General requirements” . 5
4 Modifications to 4.2, “Electrical requirements”. 5
5 Modifications to 4.3, “Safety criteria” . 5
6 Modification to 4.4, “Functional requirements” . 5
7 Modifications to 5.4, “Dimensioning with regard to touch voltages” . 5
8 Modification to 6.1.1, “High and low voltage earthing systems” . 5
9 Modification to 6.1.2, “LV supply only within HV substations” . 6
10 Modification to 6.1.3, “LV supply leaving or coming to HV substations” . 6
11 Modification to 6.1.4, “LV in the proximity of HV substation” . 6
12 Modification to 7.1, “Installation of earth electrodes and earthing conductors” . 6
13 Modification to 7.2, “Lightning and transients” . 6
14 Modification to Clause 8, “Measurements” . 6
15 Modification to 9.1, “Inspections” . 6
16 Modification to 9.2, “Measurements” . 6
17 Modification to A.1, “Method of calculating permissible touch voltages UTp” . 6
European foreword
This document (EN 50522:2022/A1:2024) has been prepared by CLC/TC 99X “Power installations exceeding
1 kV a.c. (1,5 kV d.c.)”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2025-07-02
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2027-07-02
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
1 Modification to Clause 2, “Normative references”
Replace the reference to IEC 61936-1:2010 with the following:
IEC 61936-1:2021, Power installations exceeding 1 kV AC and 1,5 kV DC - Part 1: AC
2 Modifications to Clause 3, “Terms and definitions”
In 3.2:
delete “effective touch voltage”,
add “” in the definition
replace the first source with the following:
“[SOURCE: IEC 60050-195:2021, 195-05-11, modified – The symbol U has been added. In the definition, “by
T
a human being or livestock” has been deleted. In Note 1 to entry, “of the human being or livestock” has been
r
...