IEC 62485-2:2010

Safety requirements for secondary batteries and battery installations - Part 2: Stationary batteries

IEC 62485-2:2010 applies to stationary secondary batteries and battery installations with a maximum voltage of DC 1 500 V (nominal) and describes the principal measures for protections against hazards generated from:
- electricity,
- gas emission,
- electrolyte.
This International Standard provides requirements on safety aspects associated with the erection, use, inspection, maintenance and disposal. It covers lead-acid and NiCd/NiMH batteries.

Exigences de sécurité pour les batteries d'accumulateurs et les installations de batteries - Partie 2: Batteries stationnaires

La CEI 62485-2:2010 s'applique aux batteries d'accumulateurs stationnaires et aux installations de batteries d'une tension maximale de 1 500 V (nominale) en courant continu et décrit les principales mesures pour la protection contre les risques générés par:
- l'électricité,
- les émissions gazeuses,
- l'électrolyte.
Cette norme internationale fournit les exigences concernant les aspects de sécurité liés à la mise en uvre, à l'utilisation, au contrôle, à la maintenance et à la mise au rebut. Elle couvre les accumulateurs au plomb et au NiCd/NiMH.

General Information

• Status: Published
• Publication Date: 15-Jun-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.220.20 - Acid secondary cells and batteries
• ICS: 29.220.30 - Alkaline secondary cells and batteries
• Technical Committee: TC 21 - Secondary cells and batteries
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jun-2010
• Completion Date: 16-Jun-2010

Standards Content (Sample)

IEC 62485-2 ®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety requirements for secondary batteries and battery installations –
Part 2: Stationary batteries
Exigences de sécurité pour les batteries d’accumulateurs et les installations
de batteries –
Partie 2: Batteries stationnaires

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IEC 62485-2 ®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety requirements for secondary batteries and battery installations –
Part 2: Stationary batteries
Exigences de sécurité pour les batteries d’accumulateurs et les installations
de batteries –
Partie 2: Batteries stationnaires

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
W
CODE PRIX
ICS 29.220.20; 29.220.30 ISBN 978-2-88910-996-8
– 2 – 62485-2 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references.7
3 Terms and definitions .8
4 Protection against electric shock.10
4.1 General .10
4.2 Protection against direct contact .11
4.3 Protection against indirect contact .11
4.3.1 Protection by automatic disconnection of supply.12
4.3.2 Protection by use of class II equipment or by equivalent insulation .16
4.3.3 Protection by electrical separation.16
4.4 Protection against both direct and indirect contact.16
4.4.1 General .16
4.4.2 Protection by Safety Extra Low Voltage (SELV) or by Protective Extra
Low Voltage (PELV).16
4.4.3 Protection by Functional Extra Low Voltage (FELV) without protective
separation .17
5 Disconnection and separation .17
6 Prevention of short circuits and protection from other effects of electric current .17
6.1 General .17
6.2 Short-circuits .18
6.3 Protective measures during maintenance.18
6.4 Leakage currents.19
7 Provisions against explosion hazards .19
7.1 Gas generation.19
7.2 Ventilation requirements .19
7.3 Natural ventilation.21
7.4 Forced ventilation .22
7.5 Charging modes .22
7.6 Overcharging under fault conditions .22
7.7 Close vicinity to the battery .22
7.8 Prevention of electrostatic discharges when working with batteries.23
8 Provision against electrolyte hazard .23
8.1 Electrolyte and water .23
8.2 Protective clothing .23
8.3 Accidental contact and "First Aid".23
8.3.1 General .23
8.3.2 Eye contact.24
8.3.3 Skin contact.24
8.4 Battery accessories and maintenance tools.24
9 Accommodation, housing .24
9.1 General .24
9.2 Specific requirements for separate battery rooms.24
9.3 Specific requirements for the specially separated areas in rooms
accommodating electrical equipment .25

62485-2 © IEC:2010 – 3 –
9.4 Battery enclosures .25
9.5 Working on or near batteries.26
9.5.1 Working distances within battery rooms .26
9.5.2 Remarks on special work in battery rooms .26
9.6 Accommodation of lead-acid and NiCd batteries in the same room .26
10 Charge current requirements .26
10.1 Superimposed ripple current .26
10.2 Maximum ripple current .27
11 Identification labels, warning notices and instructions for use, installation and
maintenance.27
11.1 Warning labels and notices in rooms.27
11.2 Identification labels or marking on cells and monobloc batteries .27
11.3 Instructions for use, installation and maintenance .28
12 Transportation, storage, disposal and environmental aspects .28
12.1 Packing and transport.28
12.2 Dismantling, disposal, and recycling of batteries .28
13 Inspection and monitoring .28
Annex A (informative) Charging methods and modes of operation.30
Annex B (informative) Calculation of safety distance d to protect against explosion
hazards.34
Bibliography .37

Figure 1 – TN system with separate protective conductor (PE) in the entire system (TN-
S network) .13
Figure 2 – TN system with functional earthing and protective (FPE, PEN) combined with
an external line conductor (TN-C system) .13
Figure 3 – TT system .14
Figure 4 – IT system .15
Figure 5 – Converters with intermediate DC circuit (IT-system) (Example) .15
Figure A.1 – Parallel operation mode circuit.30
Figure A.2 – Battery charge current interlaced with frequent temporary discharge events
due to a load current exceeding the current supply capability.31
Figure A.3 – Response mode operation circuit.32
Figure A.4 – IU-or CC-CV charge profile.32
Figure A.5 – Time dependant profile of current I and voltage U .32
Figure B.1 – Safety distance d as a functio
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