EN 50522:2022/A1:2024

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

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

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, “Lightning and transients” . 6
18 14 Modification to Clause 8, “Measurements” . 6
19 15 Modification to 9.1, “Inspections” . 6
20 16 Modification to 9.2, “Measurements” . 6
21 17 Modification to A.1, “Method of calculating permissible touch voltages UTp” . 6
EN 50522:2022/prA1:2024 (E)
22 European foreword
23 This document (EN 50522:2022/prA1:2024) has been prepared by CLC/TC 99X “Power installations
24 exceeding 1 kV a.c. (1,5 kV d.c.)”.
25 This document is currently submitted to the Enquiry.
26 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
EN 50522:2022/prA1:2024 (E)
27 1 Modification to Clause 2, “Normative references”
28 Replace the reference to IEC 61936-1:2010 with the following:
29 IEC 61936-1:2021, Power installations exceeding 1 kV AC and 1,5 kV DC - Part 1: AC
30 2 Modifications to Clause 3, “Terms and definitions”
31 In 3.2:
32 delete “effective touch voltage”,
33 add “” in the definition
34 replace the first source with the following:
35 “[SOURCE: IEC 60050-195:2021, 195-05-11, modified – The symbol UT has been added.
...