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SLOVENSKI STANDARD
01-marec-2024
Vodilo za električne inštalacije – 102. del: Smernice za uporabo enosmernih
nizkonapetostnih električnih inštalacij, ki niso predvidene za priključitev na javno
distribucijsko omrežje (IEC TS 61200-102:2020)
Electrical installation guide - Part 102: Application guidelines for low-voltage direct
current electrical installations not intended to be connected to a public distribution
network (IEC TS 61200-102:2020)
Ta slovenski standard je istoveten z: IEC TS 61200-102:2020
ICS:
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.
IEC TS 61200-102
Edition 1.0 2020-03
TECHNICAL
SPECIFICATION
colour
inside
Electrical installation guide –
Part 102: Application guidelines for low-voltage direct current electrical
installations not intended to be connected to a public distribution network
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 91.140.50 ISBN 978-2-8322-8013-3
– 2 – IEC TS 61200-102:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General . 8
4.1 Concept of electrical installation . 8
4.2 Architecture and operating modes of installation . 9
5 Local power sources (supplies). 9
6 Loads . 9
6.1 Possible nominal voltages . 9
6.2 Minimum and maximum voltage values . 10
7 Wiring systems . 10
7.1 Type of wiring system . 10
7.2 Identification of conductors and terminals . 10
7.3 Cross-sectional areas of conductors . 11
8 Earthing . 11
8.1 Direction of touch current . 11
8.2 Earthing arrangement . 12
8.3 Protective conductors . 12
8.4 Earthing conductors . 12
9 Protection for safety . 12
9.1 Protection against electric shock . 12
9.1.1 General . 12
9.1.2 Provision for basic protection . 12
9.1.3 Provision for fault protection . 12
9.2 Protection against thermal effects . 16
9.2.1 Protection against electric arc . 16
9.2.2 Risk of explosion with batteries. 16
9.3 Protection against overcurrent . 17
9.3.1 Overload protection . 17
9.3.2 Short-circuit protection . 17
9.4 Protection against overvoltage . 18
10 Inspection . 18
10.1 Initial inspection . 18
10.2 Periodic inspection . 18
Annex A (normative) Architecture and operating modes of installations. 20
A.1 Architecture of installations . 20
A.1.1 Individual installation . 20
A.1.2 Collective installation . 20
A.1.3 Shared installations . 20
A.2 Operating modes . 21
A.2.1 Direct feeding mode. 21
A.2.2 Reverse feeding mode . 21
A.2.3 Autonomous mode . 22
Annex B (informative) Limitation of lengths of cables . 23
B.1 Limit of voltage drop in consumer installations . 23
B.2 Estimation of voltage drop . 23
Annex C (informative) List of notes concerning certain countries . 24
Bibliography . 25
Figure 1 – Concept of DC low-voltage electrical installation . 9
Figure 2 – Colours used for identification of conductors in DC electrical installations . 11
Figure 3 – Downward and upward direct current in human body . 11
Figure 4 – Example of electrical installation in TN-S system . 13
Figure 5 – Estimation of short-circuit level in TN system . 14
Figure 6 – Examples of TN-S systems in DC installation . 15
Figure 7 – Different types of arc fault to be considered . 16
Figure A.1 – Example of an individual installation . 20
Figure A.2 – Example of a collective installation . 20
Figure A.3 – Example of a shared installation . 21
Figure A.4 – DC electrical installation in direct feeding mode . 21
Figure A.5 – DC electrical installation in reverse feeding mode . 21
Figure A.6 – DC electrical installation in autonomous mode . 22
Table 1 – Preferred nominal DC voltages . 10
– 4 – IEC TS 61200-102:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATION GUIDE –
Part 102: Application guidelines for low-voltage direct current electrical
installations not intended to be connected to a public distribution network
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In exceptional
circumstances, a technical committee may propose the publication of a Technical Specification
when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical Specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC TS 61200-102, 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
64/2385/DTS 64/2406/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 61200 series, published under the general title Electrical installation
guide, can be found on the IEC website.
The reader's attention is drawn to the fact that Annex C 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 un
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