HD 60364-5-551:2010/A11:2016

Low-voltage electrical installations - Part 5-55: Selection and erection of electrical equipment - Other equipment - Clause 551: Low-voltage generating sets

2014-07-25 GVN: D148/C039: NWI approved
2014-06-05 GVN: NWI requested to 148 BT on 2014-06-11
2021: CLC legacy converted by DCLab NISOSTS

Errichten von Niederspannungsanlagen - Teil 5-55: Auswahl und Errichtung elektrischer Betriebsmittel - Andere Betriebsmittel - Abschnitt 551: Niederspannungsstromerzeugungseinrichtungen

Installations électriques à basse tension - Partie 5-55: Choix et mise en oeuvre des matériels électriques - Autres matériels - Article 551: Groupes générateurs à basse tension

Nizkonapetostne električne inštalacije - 5-55. del: Izbira in namestitev električne opreme - Druga oprema - 551. točka: Nizkonapetostni generatorji (IEC 60364-5-55:2001/A2:2008 (Točka 551)) - Dopolnilo A11

General Information

• Status: Published
• Publication Date: 05-May-2016
• Withdrawal Date: 28-Feb-2019
• ICS: 91.140 - Installations in buildings
• Technical Committee: CLC/TC 64 - Electrical installations and protection against electric shock
• Drafting Committee: CLC/TC 64/WG 10 - Low-voltage generating sets
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 06-May-2016
• Due Date: 08-Jul-2017
• Completion Date: 06-May-2016
• Ref Project: SIST HD 60364-5-551:2010/A11:2016 - Low-voltage electrical installations - Part 5-55: Selection and erection of electrical equipment - Other equipment - Clause 551: Low-voltage generating sets

Relations

• Amends: HD 60364-5-551:2010 - Low-voltage electrical installations - Part 5-55: Selection and erection of electrical equipment - Other equipment - Clause 551: Low-voltage generating sets
• Effective Date: 26-Jan-2023

Overview

HD 60364-5-551:2010/A11:2016 is a European harmonization standard published by CLC that addresses low-voltage electrical installations. This standard focuses on the selection and erection of electrical equipment, specifically covering low-voltage generating sets (Clause 551). It provides guidelines for the safe design, installation, and protective measures required for stand-alone generating sets either connected or disconnected from the mains supply.

This amendment (A11) updates the original 2010 version with additional requirements, particularly for stand-alone generating sets and those supplying fixed installations disconnected from the mains. It harmonizes safety protocols across CENELEC member countries, ensuring consistent application in low-voltage generating equipment installations.

Key Topics

• General Requirements for Low-Voltage Generating Sets
  The generating sets must be suitable for their intended use, including performance ratings and compatibility with connected electrical loads, ensuring no damage or danger arises from voltage or frequency deviations.

• Protective Measures and Automatic Disconnection
  The standard mandates automatic disconnection of supply to prevent electric shock and damage due to faults. It covers short-circuit breaking capacity, earth fault current assessments, and disconnection timings, including specific measures for sets using static converters.

• Electrical Separation and Insulation Monitoring Devices (IMD)
  Guidance is given on employing electrical separation techniques for different configurations of current-using equipment, including installation of IMDs per EN 61557-8. Failures below insulation resistance thresholds trigger automatic disconnection for enhanced safety.

• Operation Modes for Fixed Installations
  Stand-alone generating sets used in fixed electrical installations disconnected from the mains supply must have clearly marked, tamper-proof switches allowing operation mode selection. Special socket-outlet designs prevent incorrect plug connections.

• Additional National Deviations and References
  The document references related IEC standards such as IEC 60309-2 (industrial plugs and sockets) and IEC 61557-8 (insulation monitoring devices), accommodating national specifics like German DIN standards for emergency socket-outlets.

Applications

• Stand-Alone Generating Sets in Remote Locations
  The standard is integral for designing safe electricity supply systems where mains are unavailable, such as rural sites, emergency setups, or construction areas.

• Backup Power Systems for Critical Infrastructure
  Ensures reliable, safe switching and load management for generators supplying hospitals, data centers, or communication networks disconnected from grid supply.

• Fixed Installations Disconnected from Mains
  Covers installations that occasionally operate off-grid, emphasizing operational safety, proper earthing, and fault protection.

• Portable and Emergency Power Equipment
  Supports safe use and maintenance routines for portable generators by defining automatic disconnection and insulation monitoring requirements.

Related Standards

• IEC 60309-2 - Plugs, socket-outlets, and couplers for industrial purposes (dimensional interchangeability requirements)
• IEC 61557-8 - Electrical safety in low-voltage distribution systems; equipment for testing and monitoring protective measures, specifically insulation monitoring devices (IMD)
• HD 60364-4-41 - Part of the electrical installations series focusing on protection against electric shock, specifically automatic disconnection of supply
• DIN 14685-1, 14685-2, 14686, and 14687 (Germany) - National standards related to emergency socket-outlets for safe connection of stand-alone generating sets

Practical Value

Implementing HD 60364-5-551:2010/A11:2016 ensures that low-voltage generating sets are selected, installed, and operated with high safety standards, minimizing risks of electric shock, equipment damage, and power supply interruptions. The standard is crucial for engineers, electricians, and technical designers engaged in the installation of generators in both standalone and fixed electrical systems, helping harmonize installation practices throughout Europe. It also integrates advanced protective measures like insulation monitoring and automatic disconnection, facilitating safer and more reliable power generation and supply solutions.

Standards Content (Sample)

SIST HD 60364-5-551:2010/A11
SL O V EN S K I
S T ANDAR D
junij 2016
Nizkonapetostne električne inštalacije – 5-55. del: Izbira in namestitev
električne opreme – Druga oprema – 551. točka: Nizkonapetostni
generatorji (IEC 60364-5-55:2001/A2:2008 (Točka 551)) – Dopolnilo A11

Low-voltage electrical installations – Part 5-55: Selection and erection of electrical
equipment – Other equipment – Clause 551: Low-voltage generating sets

Installations électriques à basse tension – Partie 5-55: Choix et mise en oeuvre
des matériels électriques – Autres matériels – Article 551: Groupes générateurs
à basse tension
Errichten von Niederspannungsanlagen – Teil 5-55: Auswahl und Errichtung
elektrischer Betriebsmittel – Andere Betriebsmittel – Abschnitt 551:
Niederspannungsstromerzeugungseinrichtungen

Referenčna oznaka
ICS 29.160.40; 91.140.50 SIST HD 60364-5-551:2010/A11:2016 (sl)

Nadaljevanje na straneh II in od 1 do 9

© 2021-11. Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega standarda ni dovoljeno.

SIST HD 60364-5-551:2010/A11 : 2016
NACIONALNI UVOD
Dopolnilo SIST HD 60364-5-551:2010/A11 (sl), Nizkonapetostne električne inštalacije – 5-55. del: Izbira
in namestitev električne opreme – Druga oprema – 551. točka: Nizkonapetostni generatorji (IEC 60364-
5-55:2001/A2:2008 (Točka 551)) – Dopolnilo A11, 2016, ima status dopolnila k slovenskemu
harmonizacijskemu dokumentu in je istoveten dopolnilu k evropskemu harmonizacijskemu dokumentu
HD 60364-5-551:2010/A11 (en), Low-voltage electrical installations – Part 5-55: Selection and erection
of electrical equipment – Other equipment – Clause 551: Low-voltage generating sets, 2016.

NACIONALNI PREDGOVOR
Evropsko dopolnilo k harmonizacijskemu dokumentu HD 60364-5-551:2010/A11:2016 je pripravil
tehnični odbor Evropskega komiteja za standardizacijo v elektrotehniki CLC/TC 64 Električne inštalacije
in zaščita pred električnim udarom. Dopolnilo k slovenskemu harmonizacijskemu dokumentu SIST HD
60364-5-551:2010/A11:2016 je prevod dopolnila k evropskemu harmonizacijskemu dokumentu HD
60364-5-551:2010/A11:2016. V primeru spora glede besedila slovenskega prevoda v tem dopolnilu je
odločilno izvirno evropsko dopolnilo v angleškem jeziku. Slovensko izdajo dopolnila je pripravil tehnični
odbor SIST/TC ELI Nizkonapetostne in komunikacijske električne inštalacije. Slovensko izdajo dopolnila
je pripravil tehnični odbor SIST/TC ELI Nizkonapetostne in komunikacijske električne inštalacije.

Odločitev za privzem tega dopolnila je v juniju 2016 sprejel tehnični odbor SIST/TC ELI Nizkonapetostne
in komunikacijske električne inštalacije.

ZVEZE S STANDARDI
S privzemom tega evropskega harmonizacijskega dokumenta veljajo za omejeni namen referenčnih
standardov vsi standardi, navedeni v izvirniku, razen tistih, ki so že sprejeti v nacionalno standardizacijo:
SIST EN 60309-2 Vtiči, vtičnice in spojke za industrijske namene – 2. del: Zahteve za
dimenzijsko izmenljivost pribora s trni in pušami (IEC 60309-2:1999)
SIST EN 61557-8 Električna varnost v nizkonapetostnih razdelilnih sistemih izmenične napetosti
do 1 kV in enosmerne napetosti do 1,5 kV – Oprema za preskušanje, merjenje
ali nadzorovanje zaščitnih ukrepov – 8. del: Naprave za nadzorovanje izolacije
v IT sistemih (IEC 61557-8:2014)

OSNOVA ZA IZDAJO STANDARDA
– privzem dopolnila HD 60364-5-551:2010/A11:2016.

OPOMBE
– Povsod, kjer se v besedilu standarda uporablja izraz "evropsko dopolnilo", v SIST HD 60364-5-
551:2010/A11:2016 to pomeni "slovensko dopolnilo”.

– Nacionalni uvod in nacionalni predgovor nista sestavni del dopolnila.

– Ta nacionalni dokument je istoveten HD 60364-5-551:2010/A11:2016 in je objavljen z dovoljenjem

CENELEC
Upravni center
Avenue Marnix 17
B-1000 Bruselj
This national document is identical with HD 60364-7-717:2010 and is published with the permission of

CENELEC
Management Centre
Avenue Marnix 17
B -1000 Brussels
II
HARMONIZACIJSKI DOKUMENT  HD 60364-5-551:2010/A11

HARMONIZATION DOCUMENT
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
maj 2016
ICS 91.140
Slovenska izdaja
Nizkonapetostne električne inštalacije – 5-55. del: Izbira in namestitev
električne opreme – Druga oprema – 551. točka: Nizkonapetostni generatorji

(IEC 60364-5-55:2001/A2:2008 (Točka 551)) – Dopolnilo A11

Low-voltage electrical Installations électriques à basse Errichten von
installations – Part 5-55: tension – Partie 5-55: Choix et Niederspannungsanlagen –
Selection and erection of mise en oeuvre des matériels Teil 5-55: Auswahl und
electrical equipment – Other électriques – Autres matériels – Errichtung elektrischer
equipment – Clause 551: Low- Article 551: Groupes Betriebsmittel – Andere
voltage generating sets générateurs à basse tension Betriebsmittel – Abschnitt 551:
Niederspannungsstromerzeugu
ngseinrichtungen
To dopolnilo A11 spreminja harmonizacijski dokument HD 60364-5+551:2010; CENELEC ga je sprejel
29. februarja 2016. Člani CENELEC morajo izpolnjevati notranje predpise CEN/CENELEC, ki določajo
pogoje za privzem tega dopolnila na nacionalno raven.

Najnovejši seznami teh nacionalnih standardov in njihovi bibliografski podatki se na zahtevo lahko dobijo
pri Upravnem centru CEN-CENELEC ali kateremkoli članu CENELEC.

To dopolnilo obstaja v treh izvirnih izdajah (angleški, francoski, nemški).

Člani CENELEC so nacionalni elektrotehniški komiteji Avstrije, Belgije, Bolgarije, Cipra, Češke republike,
Danske, Estonije, Finske, Francije, Grčije, Hrvaške, Irske, Islandije, Italije, Latvije, Litve, Luksemburga,
Madžarske, Malte, Nemčije, Nekdanje jugoslovanske republike Makedonije, Nizozemske, Norveške,
Poljske, Portugalske, Romunije, Slovaške, Slovenije, Španije, Švedske, Švice, Turčije in Združenega
kraljestva.
CENELEC
Evropski komite za standardizacijo v elektrotehniki
European Committee for Electrotechnical Standardisation
Europäisches Komitee für Elektrotechnische Normung
Comité Européen de Normalisation Electrotechnique
Upravni center CEN-CENELEC: Avenue Marnix 17, B - 1000 Bruselj
© 2016 CENELEC Lastnice avtorskih pravic so vse države članice CENELEC              Ref. št. HD 60364-5-551:2010/A11:2016 E

SIST HD 60364-5-551:2010/A11 : 2016
VSEBINA Stran
Evropski predgovor . 3
1 Sprememba predgovora . 4
2 Sprememba točke 551.2 Splošne zahteve. 4
3 Spremembe Dodatka ZA . 4
4 Spremembe Dodatka ZB . 4
5 Dopolnitev Dodatka ZC . 4
Dodatek ZC (normativni): Dodatne zahteve za samostojne agregate, ki niso priključeni
na napajalno omrežje, in za samostojne agregate za napajanje v fiksnih inštalacijah,
ločenih od napajalnega omrežja. 5
ZC.1 Splošno . 5
ZC.2 Splošne zahteve . 5
ZC.3 Zaščitni ukrepi . 5
ZC.3.1 Samodejni izklop napajanja . 5
ZC.3.2 Uporaba električne ločitve v povezavi s samostojnimi agregati . 6
ZC.3.3 Zagon samostojnih agregatov . 7
ZC.3.4 Samostojni agregati za oskrbo z električno energijo v fiksnih električnih inštalacijah, ki so
ločene od napajalnega omrežja . 8

SIST HD 60364-5-551:2010/A11 : 2016

Evropski predgovor
Ta dokument (HD 60364-5-551:2010/A11:2016) je pripravil CLC/TC 64 "Električne inštalacije in zaščita
pred električnim udarom".
Določena sta bila naslednja datuma:

‒ zadnji datum, do katerega mora dokument dobiti (dop) 2017-03-01
status nacionalnega standarda bodisi z objavo
usklajenega besedila ali z razglasitvijo
‒ zadnji datum, do katerega je treba razveljaviti (dow) 2019-03-01
nacionalne standarde, ki so v nasprotju s HD

Opozoriti je treba na možnost, da bi lahko bil kateri od elementov tega dokumenta predmet patentnih
pravic. CENELEC (in/ali CEN) ni odgovoren za identificiranje nobene od teh patentnih pravic.

Točke, podtočke, opombe, preglednice, slike in dodatki, ki so dodani dodatkom v standardu IEC 60364-
5-55:2001/A2:2008 (točka 551), imajo predpono Z.

SIST HD 60364-5-551:2010/A11 : 2016
1 Sprememba predgovora
V zadnjem in edinem odstavku se "dodatek ZA" zamenja z "dodatek ZB".

2 Sprememba točke 551.2 Splošne zahteve

Po 551.2.4 se doda naslednja nova točka:

551.2.Z1 V dodatku ZC so podrobno opredeljene dodatne zahteve:

– za samostojne agregate, ki niso priključeni na napajalno omrežje, in

– za samostojne agregate, namenjene napajanju v fiksni inštalaciji, ločeni od napajalnega omrežja.

3 Sprememba dodatka ZA
Dodata se naslednji novi sklicevanji:

Publikacija Leto Naslov EN/HD Leto
IEC 60309-2 - Vtiči, vtičnice in spojke za industrijsko rabo – IEC 60309-2 -
2. del: Zahteve za dimenzijsko izmenljivost pribora
(konektorjev) s trni in cevastimi kontakti
IEC 61557-8 - Električna varnost v nizkonapetostnih razdelilnih IEC 61557-8 -
sistemih izmenične napetosti do 1 000 V in
enosmerne napetosti do 1 500 V – Oprema za
preskušanje, merjenje ali nadzorovanje zaščitnih
ukrepov – 8. del: Naprave za nadzorovanje
izolacije v sistemih IT
4 Sprememba dodatka ZB
Doda se naslednji posebni nacionalni pogoj:

ZC.3.2.2.2 Nemčija
Namesto za
...

SLOVENSKI STANDARD
01-junij-2016
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO,]ELUDLQQDPHVWLWHYHOHNWULþQH
RSUHPH'UXJDRSUHPDWRþND1L]NRQDSHWRVWQLJHQHUDWRUML,(&
$7RþND'RSROQLOR$
Low-voltage electrical installations - Part 5-55: Selection and erection of electrical
equipment - Other equipment - Clause 551: Low-voltage generating sets
Errichten von Niederspannungsanlagen - Teil 5-55: Auswahl und Errichtung elektrischer
Betriebsmittel - Andere Betriebsmittel - Abschnitt 551:
Niederspannungsstromerzeugungseinrichtungen
Installations électriques à basse tension - Partie 5-55: Choix et mise en oeuvre des
matériels électriques - Autres matériels - Article 551: Groupes générateurs à basse
tension
Ta slovenski standard je istoveten z: HD 60364-5-551:2010/A11:2016
ICS:
29.160.40 (OHNWULþQLDJUHJDWL Generating sets
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.

HARMONIZATION DOCUMENT HD 60364-5-551:2010/A11

DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
May 2016
ICS 91.140
English Version
Low-voltage electrical installations - Part 5-55: Selection and
erection of electrical equipment - Other equipment - Clause 551:
Low-voltage generating sets
Installations électriques à basse tension - Partie 5-55: Choix Errichten von Niederspannungsanlagen - Teil 5-55:
et mise en oeuvre des matériels électriques - Autres Auswahl und Errichtung elektrischer Betriebsmittel - Andere
matériels - Article 551: Groupes générateurs à basse Betriebsmittel - Abschnitt 551:
tension Niederspannungsstromerzeugungseinrichtungen
This amendment A11 modifies the Harmonization Document HD 60364-5-551:2010; it was approved by CENELEC on 2016-02-29.
CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of
this amendment at national level.
Up-to-date lists and bibliographical references concerning such national implementations 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).
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.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. HD 60364-5-551:2010/A11:2016 E

Contents Page
European foreword . 3
1 Modification to Foreword. 4
2 Modification to Clause 551.2  General requirements . 4
3 Modification to Annex ZA . 4
4 Modification to Annex ZB . 4
5 Addition of Annex ZC . 4
Annex ZC (normative) Additional requirements for stand-alone generating sets not
connected to the mains supply and for stand-alone generating sets for supplying
energy in a fixed installation disconnected from the mains supply . 5
ZC.1 General . 5
ZC.2 General requirements . 5
ZC.3 Protective measures . 5
ZC.3.1 Automatic disconnection of supply . 5
ZC.3.2 Use of electrical separation in connection with stand-alone generating sets . 6
ZC.3.3 Starting-up the stand-alone generating set . 8
ZC.3.4 Stand-alone generating sets for supplying energy in a fixed electrical installation
disconnected from the mains supply . 8

European foreword
This document (HD 60364-5-551:2010/A11:2016) was prepared by CLC/TC 64 “Electrical installations
and protection against electric shock”.
The following dates are fixed:
(dop) 2017-03-01
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2019-03-01
• latest date by which the national standards conflicting with
the 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 [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Clauses, subclauses, notes, tables, figures and annexes which are additional to those in
IEC 60364-5-55:2001/A2:2008 (Clause 551) are prefixed “Z”.
1 Modification to Foreword
In the last but one paragraph, replace "Annex ZA" by "Annex ZB".
2 Modification to Clause 551.2  General requirements
Add the following new subclause after 551.2.4:
551.2.Z1 Annex ZC details additional requirements
– for stand-alone generating sets not connected to the mains supply and
– for stand-alone generating sets for supplying energy in a fixed installation that is disconnected from
the mains supply.
3 Modification to Annex ZA
Add the following new references:
Publication Year Title EN/HD Year
IEC 60309-2 - Plugs, socket-outlets and couplers for EN 60309-2 -
industrial purposes -
Part 2: Dimensional interchangeability
requirements for pin and contact-tube
accessories
IEC 61557-8 - Electrical safety in low voltage distribution EN 61557-8 -
systems up to 1 000 V a.c. and 1 500 V d.c. -
Equipment for testing, measuring or
monitoring of protective measures -
Part 8: Insulation monitoring devices for IT
systems
4 Modification to Annex ZB
Add the following SNC:
ZC.3.2.2.2 Germany
Instead of the requirements of the second paragraph of ZC.3.2.2.2, in Germany
the standards DIN 14685-1, DIN 14685-2, DIN 14686 and DIN 14687 apply for
single-phase socket-outlets for emergency cases.

5 Addition of Annex ZC
Add the following new Annex:
Annex ZC
(normative)
Additional requirements for stand-alone generating sets not connected
to the mains supply and for stand-alone generating sets for supplying energy
in a fixed installation disconnected from the mains supply
ZC.1 General
Especially for generating sets standing alone, provisions shall be made to disconnect any generating set
or a combination of generating sets in case of failure of the connecting cables or of the supplied
equipment. In this case, the requirements of HD 60364-4-41 shall be met except as modified for the
particular cases given in Clauses ZC.2 and ZC.3.
ZC.2 General requirements
The stand-alone generating set shall be suitable for the intended use (e.g. performance rating).
NOTE Special requirements apply for stand-alone generating sets that are switched in parallel.
The prospective short-circuit current and prospective earth fault current shall be assessed for each stand-
alone generating set or combination of stand-alone generating sets which can operate independently of
other sources or combinations. The short-circuit-breaking capacity of protective devices shall not be
exceeded for any of the intended methods of operation of the stand-alone generating set(s).
The capacity and operating characteristics of the stand-alone generating set shall be such that danger or
damage to equipment does not arise after the connection or disconnection of any intended load as a
result of deviation of the voltage or frequency from the intended operating range.
Protective devices shall be provided to disconnect automatic
...