FprEN IEC 62991:2022
(Main)Particular requirements for source switching equipment (SSE)
Particular requirements for source switching equipment (SSE)
This International Standard applies to Source Switching Equipment, hereafter referred to as SSE(s), for household and similar uses, primarily intended to be used for Energy Efficiency purposes with local production and/or storage of energy. This standard has been drafted following principles of: - IEC guides 118 and 119 for Energy Efficiency; - IEC guide 110 for safety. SSEs are intended to be installed in low voltage prosumer electrical installations (PEI) to deliver the electrical energy: - either to current-using equipment (direct feeding mode or island mode); - or to the grid (reverse feeding mode). SSEs are intended to select and/or combine two power sources (e.g. selected among grid, local power source, storage units) within an Electrical Energy Management system (EEMS). SSEs may also be used for backup supply. NOTE SSEs capable to select more than two sources are under consideration. SSEs are part of the fixed electrical installation. This standard applies to SSEs for operation in: - AC single or multiphase circuits with rated voltages not exceeding 440 V AC, frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A. They are intended to be used in installations with prospective short circuit current not exceeding 25 000 A, or - DC circuits. SSE for DC circuits are under consideration (next edition). SSEs may be operated: - manually (M-SSE), or - remotely (R-SSE), or - automatically (A-SSE), or - a combination of the above methods of operation, e.g. manual and remote. SSEs are constructed either as Combined-SSEs (C-SSEs, based on dedicated products suc as circuit breakers, switches or contactors) or Non-Combined SSEs (NC-SSEs). SSEs are intended for use in circuits where protection against electrical shock and over-current according to IEC 60364 is provided, unless the SSE already contains such protective function. SSEs are normally installed by instructed persons (IEC 60050-195:1998, 195-04-02) or skilled persons (IEC 60050-195:1998, 195-04-01). SSEs are normally used by ordinary persons (IEC 60005-195:1998, 195-04-03) and do not require maintenance. The requirements of this standard apply for standard environmental 420 conditions as given in clause 7. They are applicable to SSEs intended for use in an environment with pollution degree 2 and overvoltage categories III according to IEC 60664-1:2020. SSEs have at least a degree of protection IP 20 according to IEC 60529. Additional requirements may be necessary for devices used in locations having more severe environmental conditions. SSEs do not, by their nature, provide an isolation function nor the overcurrent protection. However, isolation and overcurrent protection functions as covered by relevant product standards may be provided by Combined SSEs. In some countries, it is not permitted to have synchronization of local sources with the grid for particular grid conditions, e.g. when fluctuations of the grid voltage or frequency are outside the tolerance limits. This document does not apply to transfer switching equipment (TSE) intended to be used by skilled persons, as covered by IEC 60947-6-1:2021.
Besondere Anforderungen an Quellenumschalteinrichtungen (SSE)
Exigences particulières relatives au matériel de commutation de source (SSE)
L'IEC 62291:2022 s'applique au matériel de commutation de source, ci-après dénommé "SSE", destiné à un usage domestique ou analogue, essentiellement prévu pour être utilisé pour les besoins de l'efficacité énergétique (EE) avec la production locale et/ou le stockage local de l'énergie. Le SSE est destiné à être installé dans des installations électriques de prosommateurs (PEI - prosumer electrical installation) à basse tension pour délivrer l'énergie électrique:
au matériel d'utilisation (mode d'alimentation directe ou mode en réseau séparé);
ou au réseau (mode d'alimentation inverse).
Posebne zahteve za opremo za preklapljanje virov (SSE)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 62991:2021
01-september-2021
Posebne zahteve za opremo za preklapljanje virov (SSE)
Particular requirements for Source-Switching Equipment (SSE)
Exigences particulières relatives au matériel de commutation de source (SSE)
Ta slovenski standard je istoveten z: prEN IEC 62991:2021
ICS:
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
oSIST prEN IEC 62991:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN IEC 62991:2021
oSIST prEN IEC 62991:2021
23K/60/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62991 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-06-18 2021-09-10
SUPERSEDES DOCUMENTS:
23K/50/CD, 23K/58A/CC
IEC SC 23K : ELECTRICAL ENERGY EFFICIENCY PRODUCTS
SECRETARIAT: SECRETARY:
France Mr Philippe Vollet
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 23,TC 64,SC 121A
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
TITLE:
Particular requirements for Source-Switching Equipment (SSE)
PROPOSED STABILITY DATE: 2024
NOTE FROM TC/SC OFFICERS:
After resolution of 23K/50/CD comments, officiers support the circulation of this CVD.
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it,
for any other purpose without permission in writing from IEC.
oSIST prEN IEC 62991:2021
62991/Ed.1/CDV © IEC(E) 2 23K/60/CDV
1 CONTENTS
3 FOREWORD . 8
4 INTRODUCTION . 10
5 1 Scope . 12
6 2 Normative references . 13
7 3 Terms and definitions . 15
8 3.1 General definitions . 15
9 3.2 Additional definitions for Non-Combined SSEs and SSE control units
10 (controllers) of Combined SSEs . 26
11 3.3 Additional definitions dedicated to Combined SSE . 27
12 4 Classification . 28
13 4.1 According to the method of operation . 28
14 4.2 According to the construction . 28
15 4.3 According to the kind of current . 29
16 4.4 According to the number of switched poles . 29
17 4.5 According to the type of terminals . 29
18 4.6 According to the SSE intended application . 29
19 4.7 According to coupling method . 29
20 4.7.1 SSE with synchronization . 29
21 4.7.2 SSE with interlock . 29
22 4.7.3 SSE with synchronization and interlock. 29
23 4.8 According to the transition type . 29
24 4.9 According to the possibility to select sources . 29
25 4.10 According to the utilization category . 29
26 4.11 According to the possibility to provide an OFF-position . 30
27 4.12 According to the method of mounting . 30
28 4.13 According to the protection against external influences . 30
29 4.14 According to functional categories . 30
30 5 Characteristics . 32
31 5.1 General . 32
32 5.2 Type and characteristics of the equipment . 33
33 5.3 Characteristics of Non-Combined SSEs . 33
34 5.3.1 General . 33
35 5.3.2 Characteristics of main circuits . 34
36 5.3.3 Utilization categories . 35
37 5.3.4 Characteristics of control circuits, including electrical interlocks . 36
38 5.3.5 Characteristics of auxiliary circuits . 37
39 5.4 Characteristics of Combined SSEs . 38
40 5.4.1 General . 38
41 5.4.2 Characteristics of main circuits . 38
42 5.4.3 Utilization categories . 39
43 5.4.4 Characteristics of control circuits, including electrical interlocks . 39
44 5.4.5 Characteristics of auxiliary circuits . 39
45 6 Markings and product information . 39
46 7 Standard conditions for operation in service . 41
47 7.1 General . 41
oSIST prEN IEC 62991:2021
62991/Ed.1/CDV © IEC(E) 3 23K/60/CDV
48 7.2 Ambient temperature range in normal use . 41
49 7.3 Relative humidity . 41
50 7.4 Altitude . 42
51 7.5 Conditions of installation . 42
52 7.6 Pollution degree . 42
53 8 Requirements for construction and operation . 42
54 8.1 General . 42
55 8.2 Mechanical design . 43
56 8.2.1 General . 43
57 8.2.2 Constructional requirements . 43
58 8.2.3 Mechanism and operating means . 45
59 8.2.4 Clearances and creepage distances and distances through sealing
60 compound . 46
61 8.2.5 Screws, current-carrying parts and connections . 49
62 8.2.6 Terminals for external copper conductors . 51
63 8.3 Protection against electric shock . 52
64 8.4 Dielectric properties . 52
65 8.4.1 General . 52
66 8.4.2 Dielectric properties . 52
67 8.5 Temperature-rise . 52
68 8.6 Making and breaking capacity . 54
69 8.7 Performances . 55
70 8.7.1 General . 55
71 8.7.2 Operating conditions . 55
72 8.7.3 Operational performance . 58
73 8.8 Resistance to heat . 59
74 8.9 Resistance of insulating material to abnormal heat and to fire . 59
75 8.10 Resistance to rusting . 59
76 8.11 Coordination with short circuit protective devices (SCPDs) . 59
77 8.12 EMC . 59
78 8.13 Resistance to abnormal conditions . 60
79 8.14 Components . 60
80 8.14.1 General . 60
81 8.14.2 Fuses . 60
82 8.14.3 Capacitors . 60
83 8.14.4 Resistors . 61
84 8.14.5 Transformers . 61
85 9 Type tests . 62
86 9.1 General requirements . 62
87 9.1.1 Type tests and test sequences . 62
88 9.1.2 Tests conditions . 62
89 9.1.3 Tests procedure. 62
90 9.2 Tests of indelibility of markings . 63
91 9.3 Tests of the mechanical strength . 63
92 9.3.1 Tests of the resistance to mechanical stresses of insulating means . 63
93 9.3.2 Verification of installation and connections . 72
94 9.3.3 Tests of fixings of covers, cover plates and actuating members . 74
95 9.3.4 Tests of attachment of knobs . 76
oSIST prEN IEC 62991:2021
62991/Ed.1/CDV © IEC(E) 4 23K/60/CDV
96 9.3.5 Tests of covers, cover plates or actuating members - accessibility to
97 live parts . 76
98 9.3.6 Tests of covers, cover plates or actuating members – accessibility to
99 non-earthed metal parts separated from live parts . 77
100 9.3.7 Tests of covers, cover plates or actuating members – accessibility to
101 insulating parts, earthed metal parts, the live parts of SELV ≤ 25 V AC
102 or metal parts separated from live parts . 77
103 9.3.8 Tests of covers, cover plates or actuating members – application of
104 gauges .
...
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