Low-voltage electrical installations - Part 8-3 : Functional aspects - Operation of prosumer’s electrical installations

IEC TS 60364-8-3:2020 (E) specifies requirements and recommendations for the safe and proper functioning of prosumers' electrical installations.
It is intended for use by contractors, users, facility managers and similar of electrical low-voltage installations.
This document also provides requirements and recommendations on technical parameters and their limiting values influencing:
a) safety:
– protection;
– alarm;
b) proper functioning:
– stability (voltage, frequency, etc);
– reliability (power quality, interoperability of communication, etc);
– energy management (power, power factor, current, stored energy, etc);
– ability to ensure correct operation of equipment.
This document also provides requirements and recommendations on data exchange models, and test procedures for the prosumer’s electrical installations that could include the following applications:
– local generating sources (e.g. photovoltaic systems, rotating generators, wind turbines);
– energy storage units (e.g. stationary secondary batteries);
– electric vehicle charging and/or discharging;
– prosumer’s energy measurement unit (PEMU);
– control and monitoring system;
– loads which can be controlled.
This part of IEC 60364 is intended to be applied in conjunction with the other parts of IEC 60364.

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IEC TS 60364-8-3 ®
Edition 1.0 2020-05
Low-voltage electrical installations –
Part 8-3: Functional aspects – Operation of prosumer’s electrical installations

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IEC TS 60364-8-3 ®
Edition 1.0 2020-05
Low-voltage electrical installations –

Part 8-3: Functional aspects – Operation of prosumer’s electrical installations

ICS 91.140.50 ISBN 978-2-8322-8303-5

– 2 – IEC TS 60364-8-3:2020 © IEC 2020
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General . 9
4.1 PEI architecture . 9
4.2 Operating modes . 10
4.2.1 General . 10
4.2.2 Grid connected PEI. 10
4.2.3 Stand-alone PEI . 10
4.2.4 Islandable PEI . 11
5 Local power supplies . 11
5.1 General . 11
5.2 Renewable energy sources . 11
5.3 Electric vehicle charging system . 11
5.4 Electrical energy storage . 12
6 Power measurement . 12
7 Control . 13
7.1 General . 13
7.2 Grid connected PEI . 13
7.3 Stand-alone PEI . 13
7.4 Islandable PEI . 13
8 Monitoring . 14
9 Optimization . 14
10 Communication . 15
10.1 General requirements . 15
10.2 Information exchange within PEI . 15
10.3 Interaction between PEI and other systems. 16
10.3.1 General . 16
10.3.2 Specific functional constraints related to grid codes requirements . 16
10.3.3 Interaction with utilities or distribution system operator . 17
10.3.4 Interactions with revenue metering systems . 17
10.3.5 Interactions with energy-related service providers (including energy
retailers) . 17
10.3.6 Peer to peer interactions with other prosumers or distributed energy
resources . 17
11 Power quality . 18
11.1 General . 18
11.2 Voltage regulation . 18
11.3 Flicker . 18
11.4 Superimposed DC component . 18
11.5 Frequency . 18
11.6 Power factor . 18
12 Maintenance . 18
13 Test procedure . 19

13.1 General . 19
13.2 Recommended tests . 19
Annex A (informative) List of notes concerning certain countries . 20
Bibliography . 21

Figure 1 – PEI architecture: functional layers . 9
Figure 2 – PEI architecture: example of physical layout . 10

Table 1 – Examples of information exchange . 16

– 4 – IEC TS 60364-8-3:2020 © IEC 2020

Part 8-3: Functional aspects –
Operation of prosumer’s electrical installations

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IEC TS 60364-8-3, which is a Technical Specification, has been prepared by IEC technical
committee 64: Electrical installations and protection against electric shock.

The text of this Technical Specification is based on the following documents:
Draft TS Report on voting
64/2400/DTS 64/2427/RVDTS
Full information on the voting for the approval of this Technical Specification can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60364 series, published under the general title Low-voltage electri

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