Particular requirements for load-shedding equipment (LSE) (IEC 62962:2019)

The purpose of this document is to provide requirements for equipment to be used in energy
efficiency systems. This document covers load-shedding equipment (LSE).
Guidelines relating to safety for LSE as given in IEC Guide 110 have been followed.
This document applies to load-shedding equipment for household and similar uses. The loadshedding
function is used in energy management systems to optimize the overall use of
electrical energy including production and storage. Load-shedding can be used for example
for energy efficiency purposes as per IEC 60364-8-1:2019.
This document applies to LSE for operation under normal conditions:
– AC circuits with a rated frequency of 50 Hz, 60 Hz or both, with a rated voltage not
exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated
short-circuit capacity not exceeding 25 000 A; or
– DC circuits1.
LSEs are intended to control the energy supplied to one or more load, circuit or mesh when:
– defined conditions of time and current are reached;
– a command or information from an external system is received.
An LSE is intended to serve as:
– a single equipment having all the necessary means able to control the loads (e.g. the
electrical energy management function is embedded in such an equipment); or
– a unit integrated into a more complex equipment or an independent equipment being part
of an electrical energy management system (EEMS); or
– an assembly of independent equipment forming an LSE (e.g. an LSE with external current
sensors); or
– as a combination of the above points.
LSE can have a wireless interface.
LSE is part of the fixed installation.
NOTE 1 This document covers load shedding equipment in the fixed installations including portable appliances
connected thereto.
LSE are intended for use in circuits with protection against electrical shock and over-current
according to IEC 60364 (all parts).
NOTE 2 For example, fault protection (indirect contact protection) can be covered as follows:
– in TT systems, by an upstream RCBOs or RCCBs according to IEC 61008-1 and IEC 61009-1;
– in a TN system, by an upstream over-current protective device.
LSEs do not, by their nature, provide an isolation function nor the over-current protection.
LSEs are normally installed by instructed persons (IEC 60050-195:1998, 195-04-02) or skilled
persons (IEC 60050-195:1998, 195-04-01) and normally used by ordinary persons
(IEC 60005-195:1998, 195-04-03).
This document contains all requirements necessary to ensure compliance with the operational
characteristics required by type tests for LSEs based on single equipment or based on an
assembly of independent equipment.
These requirements apply for standard conditions of temperature and environment as given
in 5.1. They are applicable to LSEs with a degree of protection of IP 20 intended for use in an
environment with pollution degree 2. For LSE having a degree of protection higher than IP 20
according to IEC 60529, for use in locations where arduous environmental conditions prevail
(e.g. excessive humidity, heat or cold or deposition of dust) and in hazardous locations (e.g.
where explosions are liable of occur), special construction can be required.
If other functions are included in LSE, these functions are covered by the relevant standards.
This document does not address communication aspects such as protocols, interoperability,
data security and any other related aspects.

Besondere Anforderungen für Lastabwurfeinrichtungen (LSE) (IEC 62962:2019)

Exigences spécifiques pour les délesteurs (LSE) (IEC 62962:2019)

IEC 62962:2019 L'objet du présent document est de fournir les exigences pour les équipements à utiliser dans les systèmes d'efficacité énergétique. Le présent document couvre les délesteurs (LSE). Les lignes directrices concernant la sécurité des LSE, telles qu'elles sont énoncées dans le Guide IEC 110, ont été respectées. Le présent document s'applique aux délesteurs destinés à un usage domestique et à des usages similaires. La fonction de délestage est utilisée dans les systèmes de gestion d'énergie pour optimiser l'usage global de l'énergie électrique, comprenant les applications de production et de stockage. Le délestage peut par exemple être utilisé à des fins d'efficacité énergétique, conformément à l'IEC 60364-8-1:2019.

Posebne zahteve za opremo za odlaganje tovora (IEC 62962:2019)

General Information

Status
Published
Publication Date
26-Feb-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Nov-2019
Due Date
12-Jan-2020
Completion Date
27-Feb-2020

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SLOVENSKI STANDARD
SIST EN IEC 62962:2020
01-april-2020
Posebne zahteve za opremo za odlaganje tovora (IEC 62962:2019)
Particular requirements for load-shedding equipment (LSE) (IEC 62962:2019)
Besondere Anforderungen für Lastabwurfeinrichtungen (LSE) (IEC 62962:2019)
Exigences spécifiques pour les délesteurs (LSE) (IEC 62962:2019)
Ta slovenski standard je istoveten z: EN IEC 62962:2019
ICS:
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
29.120.99 Druga električna dodatna Other electrical accessories
oprema
SIST EN IEC 62962:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 62962:2020
---------------------- Page: 2 ----------------------
SIST EN IEC 62962:2020
EUROPEAN STANDARD EN IEC 62962
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2019
ICS 27.015; 29.020
English Version
Particular requirements for load-shedding equipment (LSE)
(IEC 62962:2019)

Exigences spécifiques pour les délesteurs (LSE) Besondere Anforderungen für Lastabwurfeinrichtungen

(IEC 62962:2019) (LSE)
(IEC 62962:2019)

This European Standard was approved by CENELEC on 2019-10-18. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62962:2019 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62962:2020
EN IEC 62962:2019 (E)
European foreword

The text of document 23K/47/FDIS, future edition 1 of IEC 62962, prepared by SC 23K "Electrical

Energy Efficiency products" of IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC

parallel vote and approved by CENELEC as EN IEC 62962:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2020-07-18

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-10-18

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 shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 62962:2019 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60038 NOTE Harmonized as EN 60038
IEC 60112 NOTE Harmonized as EN 60112
IEC 60364-4-41 NOTE Harmonized as HD 60364-4-41
IEC 60364-5-51:2005 NOTE Harmonized as HD 60364-5-51:2009
IEC 60364-8-1:2019 NOTE Harmonized as HD 60364-8-1:2019 (not modified)
IEC 60529 NOTE Harmonized as EN 60529
IEC 60669-1:2017 NOTE Harmonized as EN 60669-1:2018
IEC 60721-3-3 NOTE Harmonized as EN IEC 60721-3-3
IEC 60947-1:2007 NOTE Harmonized as EN 60947-1:2007 (not modified)
IEC 60998-2-2:2002 NOTE Harmonized as EN 60998-2-2:2004
IEC 61000-3-2 NOTE Harmonized as EN IEC 61000-3-2
IEC 61008-1:2010 NOTE Harmonized as EN 61008-1:2012
IEC 61008-1:2010/A1:2012 NOTE Harmonized as EN 61008-1:2012/A1:2014
IEC 61008-1:2010/A2:2013 NOTE Harmonized as EN 61008-1:2012/A2:2014
IEC 61009-1:2010 NOTE Harmonized as EN 61009-1:2012
IEC 61009-1:2010/A1:2012 NOTE Harmonized as EN 61009-1:2012/A1:2014
IEC 61009-1:2010/A2:2013 NOTE Harmonized as EN 61009-1:2012/A2:2014
IEC 61140 NOTE Harmonized as EN 61140
ISO 2039-2:1987 NOTE Harmonized as EN ISO 2039-2:1999 (not modified)
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SIST EN IEC 62962:2020
EN IEC 62962:2019 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60065 2001 Audio, video and similar electronic - -
apparatus - Safety requirements
IEC 60085 - Electrical insulation - Thermal evaluation EN 60085 -
and designation
IEC 60127 series Miniature fuses EN 60127 series
IEC 60212 - Standard conditions for use prior to and EN 60212 -
during the testing of solid electrical
insulating materials
IEC 60317-0-1 1997 Specifications for particular types of - -
winding wires -- Part 0-1: General
requirements - Enamelled round copper
wire
IEC 60364 series Low-voltage electrical installations HD 60364 series
IEC 60384-14 1993 Fixed capacitors for use in electronic - -
equipment -- Part 14: Sectional
specification: Fixed capacitors for
electromagnetic interference suppression
and connection to the supply mains
IEC 60417 - Graphical symbols for use on equipment. - -
Index, survey and compilation of the single
sheets.
IEC 60664-1 2007 Insulation coordination for equipment EN 60664-1 2007
within low-voltage systems - Part 1:
Principles, requirements and tests
IEC 60695-2-10 2000 Fire hazard testing -- Part 2-10: - -
Glowing/hot-wire based test methods -
Glow-wire apparatus and common test
procedure
IEC 60695-2-11 2000 Fire hazard testing -- Part 2-11: - -
Glowing/hot-wire based test methods -
Glow-wire flammability test method for
end-products
---------------------- Page: 5 ----------------------
SIST EN IEC 62962:2020
EN IEC 62962:2019 (E)
Publication Year Title EN/HD Year
IEC 60730 series Automatic electrical controls EN 60730 series
IEC 61000-2-2 - Electromagnetic compatibility (EMC) - Part EN 61000-2-2 -
2-2: Environment - Compatibility levels for
low-frequency conducted disturbances and
signalling in public low-voltage power
supply systems
IEC 61000-4-2 - Electromagnetic compatibility (EMC) - Part EN 61000-4-2 -
4-2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4-3 - Electromagnetic compatibility (EMC) - Part - -
4-3: Testing and measurement techniques
- Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-4-4 - Electromagnetic compatibility (EMC) - Part EN 61000-4-4 -
4-4: Testing and measurement techniques
- Electrical fast transient/burst immunity
test
IEC 61000-4-5 - Electromagnetic compatibility (EMC) - Part EN 61000-4-5 -
4-5: Testing and measurement techniques
- Surge immunity test
IEC 61000-4-6 - Electromagnetic compatibility (EMC) - Part EN 61000-4-6 -
4-6: Testing and measurement techniques
- Immunity to conducted disturbances,
induced by radio-frequency fields
IEC 61000-4-8 - Electromagnetic compatibility (EMC) - Part EN 61000-4-8 -
4-8: Testing and measurement techniques
- Power frequency magnetic field immunity
test
IEC 61000-4-11 - Electromagnetic compatibility (EMC) - Part EN 61000-4-11 -
4-11: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests
IEC 61032 1997 Protection of persons and equipment by EN 61032 1998
enclosures - Probes for verification
IEC 61558-2-6 - Safety of transformers, reactors, power EN 61558-2-6 -
supply units and similar products for supply
voltages up to 1 100 V - Part 2-6: Particular
requirements and tests for safety isolating
transformers and power supply units
incorporating safety isolating transformers
ISO 306 - Plastics - Thermoplastic materials - EN ISO 306 -
Determination of Vicat softening
temperature (VST)
CISPR 15 - Limits and methods of measurement of EN IEC 55015 -
radio disturbance characteristics of
electrical lighting and similar equipment
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SIST EN IEC 62962:2020
IEC 62962
Edition 1.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Particular requirements for load-shedding equipment (LSE)
Exigences spécifiques pour les délesteurs (LSE)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.015; 29.020 ISBN 978-2-8322-7385-2

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 62962:2020
– 2 – IEC 62962:2019  IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 9

INTRODUCTION ................................................................................................................... 11

1 Scope ............................................................................................................................ 12

2 Normative references .................................................................................................... 13

3 Terms and definitions .................................................................................................... 14

4 General requirements .................................................................................................... 22

4.1 General ................................................................................................................. 22

4.2 Architecture .......................................................................................................... 23

4.3 Standard conditions for operation in service .......................................................... 24

5 General remarks on tests .............................................................................................. 25

5.1 Environmental conditions ...................................................................................... 25

5.1.1 General ......................................................................................................... 25

5.1.2 Ambient temperature range in normal use...................................................... 25

5.1.3 Relative humidity ........................................................................................... 25

5.1.4 Altitude .......................................................................................................... 25

5.2 General testing procedure and samples ................................................................ 26

6 Ratings .......................................................................................................................... 27

6.1 Rated values ......................................................................................................... 27

6.1.1 Rated operational voltages ............................................................................ 27

6.1.2 Rated insulation voltage ................................................................................ 27

6.1.3 Rated impulse voltage ................................................................................... 27

6.1.4 Maximum value of rated current ..................................................................... 27

6.1.5 Preferred rated current values (I ) ................................................................. 27

6.1.6 Minimum value of rated making and breaking capacity (I ) ...................... 28

RMS

6.1.7 Rated frequency ............................................................................................ 28

6.1.8 Rated conditional short-circuit current ............................................................ 28

6.1.9 Preferred rated load-shedding current (power) values (I L , P L ) ................ 28

n s n s

6.2 Time-current characteristic for LSEs monitoring the current .................................. 28

6.2.1 LSE operating principle .................................................................................. 28

6.2.2 Current limits (I L ) ....................................................................................... 30

n s

6.2.3 Minimum switch OFF-time ............................................................................. 30

6.2.4 Reclosing conditions ...................................................................................... 31

6.3 Time-power characteristic ..................................................................................... 32

6.4 LSE shedding sequence ....................................................................................... 32

7 Classification ................................................................................................................. 33

7.1 General ................................................................................................................. 33

7.2 According to the LSE functional category .............................................................. 33

7.3 According to the switching means ......................................................................... 34

7.4 According to the possibility of adjusting the rated load-shedding current(s)

(or power) ............................................................................................................. 34

7.5 According to the shedding sequence ..................................................................... 34

7.6 According to the design ........................................................................................ 34

7.6.1 Stand-alone LSE with internal or external sensors or measuring units ........... 34

7.6.2 LSE with external sensor ............................................................................... 34

7.6.3 Combined LSE (or assembled LSE) ............................................................... 34

7.7 According to the method of mounting .................................................................... 34

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SIST EN IEC 62962:2020
IEC 62962:2019  IEC 2019 – 3 –

7.8 According to the type of terminals ......................................................................... 34

7.9 According to the contact openings ........................................................................ 34

7.10 According to the protection against external influences ......................................... 35

7.11 According to the number of poles .......................................................................... 35

7.12 According to the type of monitored parameters ..................................................... 35

8 Markings and information .............................................................................................. 35

8.1 General ................................................................................................................. 35

8.2 Test of markings ................................................................................................... 36

9 Protection against electric shock ................................................................................... 36

9.1 General ................................................................................................................. 36

9.2 Test for protection against electric shock .............................................................. 37

10 Terminals for external copper conductors ...................................................................... 40

10.1 General ................................................................................................................. 40

10.2 Terminals with screw clamping for external copper conductors ............................. 40

10.2.1 General ......................................................................................................... 40

10.2.2 Conductor fitting ............................................................................................ 46

10.2.3 Mechanical strength of terminals ................................................................... 46

10.2.4 Resistance to corrosion of terminals .............................................................. 46

10.2.5 Clamping effects on conductors ..................................................................... 46

10.2.6 Clamping reliability of terminals ..................................................................... 47

10.2.7 Clamping length of terminals ......................................................................... 48

10.2.8 Reliability of terminals ................................................................................... 49

10.2.9 Accidental loosening of earthing terminals ..................................................... 49

10.2.10 Resistance to corrosion of earthing terminals ................................................ 49

10.2.11 Additional requirements for the design of pillar terminals ............................... 50

10.2.12 Additional requirements for the design of lug terminals .................................. 50

10.2.13 Additional requirements for terminals for the connection of external

conductors ..................................................................................................... 50

10.3 Screwless terminals for external copper conductors .............................................. 50

10.3.1 General ......................................................................................................... 50

10.3.2 Conductor fittings .......................................................................................... 50

10.3.3 Connection of conductors .............................................................................. 51

10.3.4 Type of material ............................................................................................. 51

10.3.5 Conductors clamping ..................................................................................... 51

10.3.6 Operation of terminals ................................................................................... 51

10.3.7 Multi conductor terminals ............................................................................... 52

10.3.8 Introduction of conductors ............................................................................. 52

10.3.9 Fixing of terminals ......................................................................................... 52

10.3.10 Mechanical strength....................................................................................... 52

10.3.11 Electrical and thermal stress resistance ......................................................... 54

10.3.12 Mechanical reliability ..................................................................................... 56

11 Constructional requirements .......................................................................................... 59

11.1 General ................................................................................................................. 59

11.2 Mechanical requirements for insulating means ...................................................... 59

11.3 Installation requirements ....................................................................................... 59

11.4 Fixing of covers, cover plates and actuating members .......................................... 62

11.4.1 General ......................................................................................................... 62

11.4.2 Fixings based on screws or rivets .................................................................. 63

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SIST EN IEC 62962:2020
– 4 – IEC 62962:2019  IEC 2019
11.4.3 Fixings which may be removed by applying a force perpendicular to the

surfaces ........................................................................................................ 63

11.4.4 Fixings which may be removed using a tool ................................................... 63

11.5 Attachment of knobs ............................................................................................. 64

11.6 Mounting means ................................................................................................... 64

11.7 Accessories .......................................................................................................... 64

12 Mechanism and operating means .................................................................................. 64

12.1 General ................................................................................................................. 64

12.2 Indication of the position ....................................................................................... 65

12.3 Rest position ......................................................................................................... 65

12.4 Making and breaking ............................................................................................. 65

12.5 Action of the mechanism without cover or cover plate ........................................... 65

12.6 Fixings and removal of operating means ............................................................... 65

12.7 Locking ................................................................................................................. 66

12.8 Status indicators ................................................................................................... 66

13 Resistance to ageing and humidity ................................................................................ 66

13.1 Resistance to ageing ............................................................................................ 66

13.2 Resistance to humidity .......................................................................................... 67

14 Insulation resistance and dielectric strength .................................................................. 67

14.1 General ................................................................................................................. 67

14.2 Insulation resistance of the main circuit ................................................................ 67

14.3 Dielectric strength of main circuits ........................................................................ 68

14.4 Insulation resistance and dielectric strength of other circuits ................................. 70

14.5 Verification of impulse withstand voltages (across clearances and through

solid insulations) ................................................................................................... 71

14.5.1 General testing procedure ............................................................................. 71

14.5.2 Verification of clearances with the impulse withstand voltage tests ................ 72

15 Temperature rise ........................................................................................................... 72

15.1 General ................................................................................................................. 72

15.2 Test setup ............................................................................................................. 73

15.3 Test procedure ...................................................................................................... 74

16 Making and breaking capacity ........................................................................................ 76

17 Normal operation ........................................................................................................... 76

17.1 Functional tests: disconnection and reclosing ....................................................... 76

17.1.1 General ......................................................................................................... 76

17.1.2 Disconnection tests ....................................................................................... 77

17.1.3 Reclosing tests .............................................................................................. 78

17.1.4 Load-shedding sequence(s) tests .................................................................. 79

17.1.5 Remotely controlled LSE and LSE with connection to other external

equipment...................................................................................................... 79

17.2 Endurance test ...................................................................................................... 79

18 Mechanical strength ...................................................................................................... 80

18.1 General ................................................................................................................. 80

18.2 Pendulum hammer test ......................................................................................... 81

18.3 Covers, cover plates or actuating members – Accessibility to live parts ................ 89

18.3.1 General ......................................................................................................... 89

18.3.2 Verification of the non-removal of covers, cover plates or actuating

members ....................................................................................................... 89

18.3.3 Verification of the removal of covers, cover plates or actuating members....... 89

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SIST EN IEC 62962:2020
IEC 62962:2019  IEC 2019 – 5 –
18.4 Covers, cover plates or actuating members – Accessibility to non-earthed

metal parts separated from live parts .................................................................... 90

18.5 Covers, cover plates or actuating members – Accessibility to insulating
parts, earthed metal parts, the live parts of SELV ≤ 25 V AC or metal parts

separated from live parts ...................................................................................... 90

18.6 Covers, cover plates or actuating members – Application of gauges ..................... 90

18.7 Grooves, holes and reverse tapers ....................................................................... 92

18.8 Rail mounted LSEs ............................................................................................... 93

19 Resistance to heat ......................................................................................................... 94

19.1 General ................................................................................................................. 94

19.2 Basic heating test ................................................................................................. 94

19.3 Ball-pressure test on parts of insulating material necessary to retain current-

carrying parts and parts of the earthing circuit in position ...................................... 95

19.4 Ball-pressure test on parts of insulating material not necessary to retain

current-carrying parts and parts of the earthing circuit in position.......................... 95

20 Screws, current carrying capacity and connections ........................................................ 95

20.1 General ................................................................................................................. 95

20.2 Correct insertion of screws ................................................................................... 96

20.3 Contact pressure of electrical connections ............................................................ 97

20.4 Screws and rivets used both as electrical and mechanical connections ................. 97

20.5 Material of current-carrying parts .......................................................................... 97

20.6 Thread-forming and thread-cutting screws ............................................................ 9

...

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