IEC 60364-8-82:2022

Low-voltage electrical installations - Part 8-82: Functional aspects - Prosumer's low-voltage electrical installations

IEC 60364-8-82:2022 provides requirements and recommendations that apply to low-voltage electrical installations connected or not to a distribution network able to operate:
– with local power supplies, and/or
– with local storage units,
and that monitors and controls the energy from the locally connected sources delivering it to:
– current-using equipment, and/or
– local storage units, and/or
– distribution networks.
Such electrical installations are designated as prosumer's electrical installations (PEIs).
These requirements and recommendations apply to new installations and modifications of existing installations.
This document also provides requirements and recommendations for the safe, efficient and correct behaviour of these installations when integrated into a smart grid.
Information related to grid interaction to ensure the stability of the electrical system for grid connected PEIs is given in Annex B.
This document covers the requirements related to stability of islanded and stand-alone PEIs.
This first edition cancels and replaces IEC 60364-8-2 published in 2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC 60364­8­2:2018:
a) the vocabulary and concepts have been aligned as much as possible with those used by TC 8 and SC 8B, taking notably into account the IEC 62898 and IEC 62786 series, still respecting the installers mindset (installers being the first users of the IEC 60364 series and being used to only refer to the IEC 60364 series);
b) the type of system earthing and the change of type of system earthing (sequencing) when there is a change of mode of the prosuming installation, have been clarified;
c) the conditions of connection and disconnection from the DSO network have also been described, both from the safety point of view and the proper functioning point of view;
d) additional requirements have been introduced;
e) the figures have been updated;
f) a new normative Annex D on single dwelling or similar application islandable PEIs has been added;
g) the numbering has also been reviewed to follow the updated numbering system of the IEC 60364 series, in line with the IEC Directives and compatible with Parts 7.

Installations électriques à basse tension - Partie 8-2: Aspects fonctionnels - Installations électriques à basse tension du prosommateur

IEC 60364-8-82:2022 spécifie les exigences et recommandations qui s'appliquent aux installations électriques à basse tension connectées ou non à un réseau de distribution capable de fonctionner:
– avec des alimentations électriques locales; et/ou
– avec des unités de stockage locales;
et qui surveille et commande l'énergie délivrée par les sources connectées en local afin d'alimenter:
– des matériels d'utilisation; et/ou
– des unités de stockage locales; et/ou
– les réseaux de distribution.
Ces installations électriques sont appelées installations électriques du prosommateur (PEI, Prosumer's Electrical Installations).
Ces exigences et recommandations s'appliquent aux installations neuves et aux modifications des installations existantes.
Le présent document spécifie également les exigences et recommandations relatives au comportement sûr, efficace et correct de ces installations lorsqu'elles sont intégrées dans un réseau intelligent.
Les informations relatives à l'interaction du réseau pour assurer la stabilité du système électrique des PEI connectées au réseau sont données à l'Annexe B.
Le présent document couvre les exigences relatives à la stabilité des PEI autonomes ou en réseau séparé.
Cette première édition annule et remplace l'IEC 60364-8-2 parue en 2018.

General Information

• Status: Published
• Publication Date: 19-Oct-2022
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: TC 64 - Electrical installations and protection against electric shock
• Drafting Committee: JWG 44 - TC 64/JWG 44
• Current Stage: PPUB - Publication issued
• Start Date: 29-Jul-2022
• Completion Date: 20-Oct-2022

Relations

• Revises: IEC 60364-8-2:2018 - Low-voltage electrical installations - Part 8-2: Prosumer's low-voltage electrical installations
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60364-8-82
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Edition 1.0 2022-10
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Low-voltage electrical installations –
Part 8-82: Functional aspects – Prosumer’s low-voltage electrical installations

Installations électriques à basse tension –
Partie 8-82: Aspects fonctionnels – Installations électriques à basse tension du
prosommateur

IEC 60364-8-82:2022-10(en-fr)

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IEC 60364-8-82

®


Edition 1.0 2022-10




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
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Low-voltage electrical installations –

Part 8-82: Functional aspects – Prosumer’s low-voltage electrical installations



Installations électriques à basse tension –

Partie 8-82: Aspects fonctionnels – Installations électriques à basse tension du

prosommateur















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ELECTROTECHNICAL

COMMISSION


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– 2 – IEC 60364-8-82:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
82.1 Scope . 8
82.2 Normative references . 8
82.3 Terms and definitions . 9
82.4 Integration of PEI in its environment . 12
82.4.1 Main objectives. 12
82.4.2 Safety . 12
82.4.3 Proper functioning . 12
82.5 PEI concept . 13
82.6 Types of PEI . 16
82.6.1 General . 16
82.6.2 Operating modes . 16
82.6.3 Interaction with the distribution network . 17
82.7 Control and monitoring . 24
82.7.1 General . 24
82.7.2 Architecture of control and monitoring system . 25
82.8 Protection of prosumer electrical installation . 25
82.8.1 General . 25
82.8.2 Protection against electric shock . 25
82.8.3 Protection against thermal effect . 41
82.8.4 Protection against overcurrent . 41
82.8.5 Protection against transient overvoltages . 45
82.9 Isolation and switching . 46
82.9.1 Isolation . 46
82.9.2 Emergency switching-off . 46
82.10 Load and source management . 46
82.10.1 Energy storage . 46
82.10.2 Design for flexibility of load and generators (demand/response) . 46
82.10.3 Electric vehicle . 46
Annex A (informative) Operating modes of PEI . 47
A.1 Direct feeding mode . 47
A.2 Island mode . 47
A.3 Reverse feeding mode . 48
Annex B (informative) Interaction with the supply system . 50
B.1 General . 50
B.2 Active power and frequency control . 50
B.3 Reactive power and voltage control . 50
B.4 Load shedding programme . 50
Annex C (informative) Architectures of PEI . 51
C.1 General . 51
C.2 Architecture of individual PEI . 51
C.3 Architecture of collective PEI . 52
C.4 Architecture of shared PEI . 57
Annex D (normative) Single dwelling or similar application islandable PEI . 61

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IEC 60364-8-82:2022 © IEC 2022 – 3 –
D.1 General . 61
D.2 Type of system earthing . 61
D.3 Connection of the local source . 64
D.4 Fire switching-off . 64
D.5 Switching device for islanding and system referencing conductor switching

device . 64
D.6 Labelling. 64
D.7 Upgrading an existing single dwelling installation in islandable PEI . 65
D.8 Initial verification . 68
Annex E (informative) List of notes concerning certain countries . 69
Bibliography . 70

Figure 1 – Example of prosumer's low-voltage electrical installation with AC electrical
distribution within the PEI . 14
Figure 2 – Example of prosumer's low-voltage electrical installation with AC and DC

electrical distribution within the PEI . 15
Figure 3 – Example of grid connected PEI architecture . 18
Figure 4 – Example of islandable PEI architecture . 19
Figure 5 – Example of architecture of PEI connected to LV DSO operating in TN-C-S in
connected mode and becoming TN-S in island mode . 28
Figure 6 – Example of architecture of PEI connected to LV DSO operating in TNC-S in
connected mode and in island mode . 29
Figure 7 – Example of architecture of PEI connected to LV DSO with disconnection of

the neutral, operating in TT in connected mode and becoming TN in island mode . 30
Figure 8 – Example of PEI installation with neutral earthing on the HV/LV transformer
side: TT in connected mode, TN in island mode (as one unique earthing arrangement
in the installation) . 32
Figure 9 – Example of PEI installation in TN-S with neutral permanently earthed on
PEI side . 34
Figure 10 – Example of PEI installation in TN-S with neutral permanently earthed on
PEI side with RCD on the system referencing conductor . 37
Figure 11 – Example of PEI in IT system in island mode . 39
Figure 12 – Example of PEI in IT system in island mode with automatic disconnection
of supply . 40
Figure 13 – Example of double short-circuit protection for the same circuit . 43
Figure 14 – Example of selectivity with various power supplies . 44
Figure 15 – Potential selectivity issue with overcurrent protections . 45
Figure A.1 – Example of electrical design of PEI operating in direct feeding mode . 47
Figure A.2 – Example of electrical design of PEI operating in island mode . 48
Figure A.3 – Example of electrical design of individual PEI operating in reverse
feeding mode . 49
Figure C.1 – Example of electrical design of individual PEI . 51
Figure C.2 – Example of type of architecture of individual PEI . 52
Figure C.3 – Example of electrical design of collective PEI using DSO distribution
system . 53
Figure C.4 – Example of electrical design of collective PEI using a distribution system
within PEI . 54
Figure C.5 – Example of electrical design of collective PEI with distribution system
within PEI in parallel with DSO distribution system. 55

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– 4 – IEC 60364-8-82:2022 © IEC 2022
Figure C.6 – Example of type of architecture for collective PEI . 56
Figure C.7 – Example of electrical design of shared PEI using DSO distribution system . 57
Figure C.8 – Example of electrical design of shared PEI with distribution system
within PEI . 58
Figure C.9 – Example of electrical design of shared PEI with distribution system within

PEI in parallel with DSO distribution system. 59
Figure C.10 – Example of type of architecture for shared PEI . 60
Figure D.1 – Example of single dwelling islandable PEI architecture in TN in connected
mode and in island mode (with disconnection of the neutral – TN-S) . 62
Figure D.2 – Example of single dwelling islandable PEI architecture in TT in connected
mode becoming TN in island mode . 63
Figure D.3 – Example of label . 65
Figure D.4 – Example of single dwelling electrical installation before being upgraded to

islandable PEI. 66
Figure D.5 – Example of single dwelling electrical installation upgraded to
islandable PEI. 67

Table 1 – Combinations of possible types of system earthing in connected mode and
island mode for PEIs and associated requirements for system referencing conductor

switching device . 27

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IEC 60364-8-82:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 8-82: Functional aspects –
Prosumer’s low-voltage electrical installations

FOREWORD
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IEC 60364-8-82 has been prepared by IEC technical committee 64: Electrical installations and
protection against electrical shock, IEC technical committee 8: System aspects of electrical
energy supply and its subcommittee 8B: Decentralized electrical energy systems. It is an
International Standard.
This first edition cancels and replaces IEC 60364-8-2 published in 2018. This edition constitutes
a technical revision.
This edition includes the following significant technical changes with respect to
IEC 60364-8-2:2018:
a) the vocabulary and concepts have been aligned as much as possible with those used by
TC 8 and SC 8B, taking notably into account the IEC 62898 series and IEC TS 62786, still
respecting the installers mindset (installers being the first users of the IEC 60364 series and
being used to only refer to the IEC 60364 series);
b) the type of system earthing and the change of type of system earthing (sequencing) when
there is a change of mode of the prosuming installation, have been clarified;

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– 6 – IEC 60364-8-82:2022 © IEC 2022
c) the conditions of connection and disconnection from the DSO network have also been
described, both from the safety point of view and the proper functioning point of view;
d) additional requirements have been introduced;
e) the figures have been updated;
f) a new normative Annex D on single dwelling or similar application islandable PEIs has been
added;
g) the numbering has also been reviewed to follow the updated numbering system of the
IEC 60364 series, in line with the IEC Directives and compatible with Parts 7.
The text of this International Standard is based on the following documents:
Draft Report on voting
64/2559/FDIS 64/2562/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60364 series, published under the general title Low-voltage electrical
installations, can be found on the IEC website.
The reader's attention is drawn to the fact that Annex E lists all of the "in-some-country" clauses
on differing practices of a less permanent nature relating to the subject of this document.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
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IEC 60364-8-82:2022 © IEC 2022 – 7 –
INTRODUCTION
Historically, utilities were managing the public transmission and distribution network from the
point of view of having a central production adapted to demand variation, a top-down energy
flow, a production/consumption balance done by integrated utility companies and with rather
passive users.
The following key factors are pushing the distribution network to change:
– the increasing number of electronic devices used daily and the growing needs as well as
future needs (e.g. charging electric vehicles) will result in the structural growing of electricity
consumption;
– the mediated pressure on climate change results in pressure on CO emissions reduction;
2
– the electricity market is also quickly changing due mainly to its unbundling and deregulation,
and to the greater number of intermittent renewable energy sources (global and local);
– users' expectations are also evolving as a result of an increasing need for better distribution
networks reliability and quality, the search for better economic performance and the
willingness to pro-actively manage their energy;
– technological evolution should also be considered as information and communication
technology (ICT) is affordable and new energy storage solutions are emerging.
All stakeholders directly involved in the electricity generation, transmission, distribution and
consumption have new expectations:
– customers are willing to reduce electrical energy costs in order to meet environment targets
(renewable energy, energy efficiency) but also wish to benefit from the quality of electricity
supply;
– suppliers wish to limit customer churn rate with price and service management;
– producers expect to maximize their yield of assets, to optimize their investments and to take
profit from energy trading;
– the aggregator wants to create conditions suitable for new market emergence;
– the transmission system operator (TSO) aspires to a robust transmission network and to
meet regulation objectives (price and level of services), while the distribution system
operator (DSO) wants to meet regulation objectives (price and level of services), to reduce
costs by productivity (including meter) and to have a flexible network;
– finally, governments and regulators are willing to create a competitive and sustainable
energy market.
The objective of this document is to ensure that the low-voltage electrical installation is
compatible with the current and future ways to deliver safely and functionally the electrical
energy to current-using equipment wherever the electrical energy comes from the DSO or local
generation. This document is not intended to influence all stakeholders of electricity supply on
how the electrical energy should be sold and delivered.

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– 8 – IEC 60364-8-82:2022 © IEC 2022
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 8-82: Functional aspects –
Prosumer’s low-voltage electrical installations



82.1 Scope
This part of IEC 60364 provides requirements and recommendations that apply to low-voltage
electrical installations connected or not to a distribution network able to operate:
– with local power supplies, and/or
– with local storage units,
and that monitors and controls the energy from the locally connected sources delivering it to:
– current-using equipment, and/or
– local storage units, and/or
– distribution networks.
Such electrical installations are designated as prosumer's electrical installations (PEIs).
These requirements and recommendations apply to new installations and modifications of
existing installations.
This document also provides requirements and recommendations for the safe, efficient and
correct behaviou
...