EN 50110-1:2013

SLOVENSKI STANDARD
01-maj-2013
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SIST EN 50110-1:2007
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Operation of electrical installations - Part 1: General requirements
Betrieb von elektrischen Anlagen - Teil 1: Allgemeine Anforderungen
Exploitation des installations électriques - Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN 50110-1:2013
ICS:
29.240.01 2PUHåMD]DSUHQRVLQ Power transmission and
GLVWULEXFLMRHOHNWULþQHHQHUJLMH distribution networks in
QDVSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50110-1
NORME EUROPÉENNE
March 2013
EUROPÄISCHE NORM
ICS 29.240.01 Supersedes EN 50110-1:2004

English version
Operation of electrical installations -
Part 1: General requirements
Exploitation des installations électriques -  Betrieb von elektrischen Anlagen -
Partie 1: Exigences générales Teil 1: Allgemeine Anforderungen

This European Standard was approved by CENELEC on 2013-02-11. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard 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 European Standard 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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,
Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50110-1:2013 E
Contents Page
Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 General . 7
3.2 Personnel, organisation and communication . 8
3.3 Working zone . 9
3.4 Working . 9
3.5 Protective devices . 10
3.6 Nominal voltages . 11
4 Basic principles . 11
4.1 Safe operation . 11
4.2 Personnel . 12
4.3 Organisation . 12
4.4 Communication (transmission of information) . 13
4.5 Work location . 14
4.6 Tools, equipment and devices . 14
4.7 Drawings and records . 15
4.8 Signs . 15
4.9 Emergency arrangements . 15
5 Operational procedures . 15
5.1 General . 15
5.2 Operating activities . 15
5.3 Functional checks . 16
6 Working procedures . 18
6.1 General . 18
6.2 Dead working . 19
6.3 Live working . 22
6.4 Working in the vicinity of live parts . 26
7 Maintenance procedures . 28
7.1 General . 28
7.2 Personnel . 28
7.3 Repair work . 29
7.4 Replacement work . 29
7.5 Temporary interruption . 30
7.6 End of maintenance work . 30
Annex A (informative) Guidance for distances in air for working procedures . 32
A.1 General . 32
A.2 Live working . 32
A.3 Work in the vicinity . 32
Annex B (informative) Additional information for safe working . 34
B.1 Example for responsibility levels . 34
B.2 Example of application of live working . 35
B.3 Atmospheric conditions that are part of environmental conditions to be assessed . 36
B.4 Fire protection – Fire fighting . 36
B.5 Work location presenting explosion risks . 37

– 3 – EN 50110-1:2013
B.6 Arc hazard . 37
B.7 Emergency arrangements . 38
Bibliography . 40

Figure 1 – Distances in air and zones for working procedures . 31
Figure 2 – Limitation of the live working zone by the use of an insulating protective device . 31
Figure B.1 – Responsibility levels . 34

Table A.1 – Guidance for distances D and D . 33
L V
Foreword
This document (EN 50110-1:2013) has been prepared by CLC/BTTF 62-3 "Operation of electrical
installations".
The following dates are fixed:
– latest date by which this document has to be implemented at (dop) 2014-02-11
national level by publication of an identical national standard
or by endorsement
– latest date by which the national standards conflicting with (dow) 2016-02-11
this document have to be withdrawn
This document supersedes EN 50110-1:2004.
– improvement of the definitions of persons responsible and level of responsibility;
– addition of a clause on emergency arrangements;
– addition of example of level of responsibility in Annex B;
– addition of a clause on arc hazard in Annex B;
– addition of a clause on emergency arrangements in Annex B;
– update of the normative references and of the Bibliography.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
– 5 – EN 50110-1:2013
Introduction
There are many national laws, standards and internal rules dealing with the matters coming within the
scope of EN 50110 and these practices have been taken as a basis for this work.
EN 50110 consists of two parts:
– Part 1 of EN 50110 contains minimum requirements valid for all CENELEC countries and some
additional informative annexes dealing with safe working on, with, or near electrical installations;
– Part 2 of EN 50110 consists of a set of normative annexes (one per country) which either specify the
present safety requirements or give the national supplements to these minimum requirements.
This concept is still believed to be a decisive step to the gradual alignment in Europe of the safety levels
associated with the operation of, work activity on, with, or near electrical installations. This document
acknowledges the present different national requirements for safety. The intention is, over the course of
time, to create a common level of safety.
Even the best rules and procedures are of no value unless all persons working on, with, or near electrical
installations are thoroughly conversant with them and with all legal requirements and comply strictly with
them.
1 Scope
This European Standard is applicable to all operation of and work activity on, with, or near electrical
installations. These are electrical installations operating at voltage levels from and including extra-low
voltage up to and including high voltage.
This latter term includes those levels referred to as medium and extra-high voltage.
These electrical installations are designed for the generation, transmission, conversion, distribution and
use of electrical power. Some of these electrical installations are permanent and fixed, such as a
distribution installation in a factory or office complex, others are temporary, such as on construction sites
and others are mobile or capable of being moved either whilst energised or whilst not energised nor
charged. Examples are electrically driven excavating machines in quarries or open-cast coal sites.
This European Standard sets out the requirements for the safe operation of and work activity on, with, or
near these electrical installations. The requirements apply to all operational, working and maintenance
procedures. They apply to all non-electrical work activities such as building work near to overhead lines or
underground cables as well as electrical work activities, when there is a risk of electrical danger.
This European Standard does not apply to ordinary persons when using installations and equipment,
provided that the installations and equipment comply with relevant standards and are designed and
installed for use by ordinary persons.
This European Standard has not been developed specifically to apply to the electrical installations listed
below. However, if th
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