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AS/NZS 5139:2019

[Current]

Electrical installations — Safety of battery systems for use with power conversion equipment

AS NZS 5139 2019 specifies requirements for general installation and safety requirements for battery energy storage systems (BESSs), where the battery system is installed in a location, such as a dedicated enclosure or room, and is connected with power conversion equipment (PCE) to supply electric power to other parts of an electrical installation.
Published: 11/10/2019
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope and general
1.1 Scope and application
1.1.1 Scope
1.1.2 Application
1.2 Normative references
1.3 Terms and definitions
2 Battery energy storage system (BESS) configurations
2.1 General
2.2 Battery energy storage systems
2.2.1 Overview
2.2.2 Battery system chemistries
2.2.3 Battery systems
2.2.4 BESS: Key components
2.2.5 Battery system components
2.2.6 BESS: Typical configurations
2.3 BESS: Applications
2.3.1 Applications
2.3.2 System architectures
2.3.3 Electrical diagrams
3 Battery energy storage system hazards
3.1 General
3.2 Hazards associated with a BESS
3.2.1 General
3.2.2 Hazard classification by battery type
3.2.3 Electrical hazard
3.2.3.1 General
3.2.3.2 Decisive voltage classification (DVC)
3.2.3.3 Battery system prospective fault current/ short-circuit current
3.2.4 Energy hazard
3.2.4.1 General
3.2.4.2 Determining arc flash incident energy
3.2.4.2.1 General
3.2.4.2.2 Working distance
3.2.4.2.3 Arcing time
3.2.4.3 Multiplying factor
3.2.4.4 Selecting personal protective equipment (PPE)
3.2.5 Mechanical hazards
3.2.6 Fire hazard
3.2.6.1 General
3.2.6.2 Batteries that emit flammable gases
3.2.6.3 Lithium ion batteries
3.2.7 Explosive gas hazard
3.2.8 Chemical hazard
3.2.9 Toxic fume hazard
4 Pre-assembled integrated BESSs — Installation, commissioning and documentation
4.1 General requirements
4.2 Installation requirements
4.2.1 General
4.2.2 Location
4.2.2.1 General
4.2.2.2 Restricted locations
4.2.3 Environmental requirements
4.2.3.1 General
4.2.3.2 IP rating
4.2.4 Protection against spread of fire
4.2.4.1 General
4.2.4.2 Barrier to habitable rooms
4.2.5 Pre-assembled integrated BESS room requirements
4.2.6 Seismic (earthquake) forces
4.3 Installation hazards
4.3.1 Electrical hazards
4.3.1.1 Additional connections to the pre-assembled integrated BESS
4.3.1.2 Grid port connections for the pre-assembled integrated BESS
4.3.1.3 Earthing of the pre-assembled integrated BESS
4.3.1.3.1 General
4.3.1.3.2 Earth fault protection — Monitoring alarm
4.3.2 Energy hazard — Arc flash
4.3.3 Mechanical hazard
4.3.4 Fire hazard
4.3.5 Explosive gas hazard
4.3.6 Chemical hazard
4.3.7 Toxic fume hazard
4.3.8 Battery alarm system
4.4 System documentation, verification and commissioning
4.4.1 Documentation
4.4.1.1 General
4.4.1.2 System manual
4.4.2 Verification
4.4.2.1 General
4.4.2.2 Initial verification and visual inspection
4.4.2.3 Alterations and repairs
4.4.2.4 Testing
4.4.3 Commissioning
4.4.3.1 General
4.4.3.2 Induction
5 Pre-assembled battery systems — Installation, commissioning and documentation
5.1 General requirements for pre-assembled battery systems
5.2 Installation requirements
5.2.1 General
5.2.2 Location
5.2.2.1 General
5.2.2.2 Restricted locations
5.2.3 Environmental requirements
5.2.3.1 General
5.2.3.2 IP rating
5.2.4 Protection against the spread of fire
5.2.4.1 General
5.2.4.2 Barrier to habitable rooms
5.2.5 Pre-assembled battery system room requirements
5.2.6 Seismic (earthquake) forces
5.3 Installation hazards
5.3.1 Electrical hazards
5.3.1.1 General
5.3.1.2 Overcurrent protection from battery system
5.3.1.2.1 General
5.3.1.2.2 Requirements for circuit breakers
5.3.1.2.3 Requirements for HRC fuses and holders
5.3.1.2.4 Pre-assembled battery systems which include overcurrent protection
5.3.1.2.5 Location of overcurrent protection devices
5.3.1.3 Isolation of the pre-assembled battery system from the PCE
5.3.1.3.1 General
5.3.1.3.2 Disconnection methods
5.3.1.3.3 Requirements for battery system — Switch-disconnector
5.3.1.3.4 Additional requirements for an adjacent and physically separate disconnection device
5.3.1.3.5 Additional requirements for a disconnection device integrated into PCE
5.3.1.3.6 Additional requirements for a disconnection device integrated into pre-assembled battery system
5.3.1.3.7 Location of isolation devices
5.3.1.3.8 BESS with multiple PCEs
5.3.1.3.9 Parallel battery systems
5.3.1.4 Battery system wiring to PCE
5.3.1.4.1 General
5.3.1.4.2 Type of cable
5.3.1.4.3 Mechanical protection
5.3.1.4.4 Voltage drop
5.3.1.4.5 Current-carrying capacity
5.3.1.4.6 Parallel battery systems
5.3.1.4.7 Protection from overcurrent from PCE
5.3.1.5 Segregation of circuits
5.3.1.6 Earthing of the battery systems
5.3.1.6.1 General
5.3.1.6.2 Floating/separated
5.3.1.6.3 Earth connection requirements — Direct earthed
5.3.1.6.4 Earth connection requirements — Resistive earthed
5.3.1.6.5 Battery system connected to a non-separated PCE
5.3.1.6.6 Battery system earth location
5.3.1.6.7 Size of earth cable
5.3.1.7 Earthing system
5.3.1.7.1 General
5.3.1.7.2 Battery system not earthed — Bonding
5.3.1.7.3 Battery system is directly earthed
5.3.1.7.4 Battery system resistively earthed
5.3.1.8 Earth fault alarm — Monitoring alarm
5.3.2 Energy hazard — Arc flash
5.3.3 Mechanical hazard
5.3.4 Fire hazard
5.3.5 Explosive gas hazard
5.3.6 Chemical hazard
5.3.7 Toxic fume hazard
5.3.8 Battery alarm system
5.4 System documentation, verification and commissioning
5.4.1 Documentation
5.4.1.1 General
5.4.1.2 System manual
5.4.2 Verification
5.4.2.1 General
5.4.2.2 Initial verification and visual inspection
5.4.2.3 Alterations and repairs
5.4.2.4 Testing
5.4.3 Commissioning
5.4.3.1 General
5.4.3.2 Induction
6 Battery systems and BESSs not covered by Sections 4 and 5 — Installation, commissioning and documentation
6.1 General requirements
6.2 Installation requirements
6.2.1 General
6.2.2 Location
6.2.2.1 General
6.2.2.2 Restricted locations
6.2.3 Environmental requirements
6.2.3.1 General
6.2.3.2 IP rating
6.2.4 Protection against the spread of fire
6.2.4.1 General
6.2.4.2 Barrier to habitable rooms
6.2.5 Battery system and BESS enclosure requirements
6.2.5.1 General
6.2.5.2 Battery system enclosure
6.2.5.2.1 General
6.2.5.2.2 Design, layout and construction
6.2.5.3 BESS enclosure
6.2.5.4 Installation of battery system enclosure
6.2.6 Battery system room requirements
6.2.6.1 General
6.2.6.2 Battery system room layout
6.2.6.3 Location of luminaires
6.2.7 Battery cell or module stands
6.2.8 Seismic (earthquake) forces
6.3 Installation hazards
6.3.1 Electrical hazards
6.3.1.1 General
6.3.1.2 Overcurrent protection from battery system
6.3.1.2.1 General
6.3.1.2.2 Requirements for circuit breakers
6.3.1.2.3 Requirements for HRC fuses and holders
6.3.1.2.4 Battery systems that include overcurrent protection
6.3.1.2.5 Location of overcurrent protection devices
6.3.1.2.6 Battery systems not requiring a battery management system
6.3.1.3 Isolation of the battery system from the PCE
6.3.1.3.1 General
6.3.1.3.2 Disconnection methods
6.3.1.3.3 Requirements for battery system — Switch-disconnector
6.3.1.3.4 Additional requirements for an adjacent and physically separate disconnection device
6.3.1.3.5 Additional requirements for a disconnection device integrated into PCE
6.3.1.3.6 Additional requirements for a disconnection device integrated into battery system
6.3.1.3.7 Location of isolation devices
6.3.1.3.8 BESS with multiple PCEs
6.3.1.3.9 Parallel battery systems
6.3.1.3.10 Battery system: interconnection isolating requirements
6.3.1.4 Screening from touch of live parts
6.3.1.4.1 General
6.3.1.4.2 Battery systems operating at DVC-B level and DVC-C level
6.3.1.4.3 Battery system terminals and outgoing busbars
6.3.1.4.4 Inter tier and inter row connections
6.3.1.5 Battery system wiring to PCE
6.3.1.5.1 General
6.3.1.5.2 Type of cable
6.3.1.5.3 Mechanical protection
6.3.1.5.4 Voltage drop
6.3.1.5.5 Current-carrying capacity
6.3.1.5.6 Parallel battery systems
6.3.1.5.7 Protection from overcurrent from PCE
6.3.1.6 Segregation of circuits
6.3.1.7 Earthing of the battery systems
6.3.1.7.1 General
6.3.1.7.2 Floating/separated
6.3.1.7.3 Earth connection requirement — Direct earthed
6.3.1.7.4 Earth connection requirements — Resistive earthed
6.3.1.7.5 Battery system connected to a non-separated PCE
6.3.1.7.6 Battery system earth location
6.3.1.7.7 Size of earth cable
6.3.1.8 Earthing system
6.3.1.8.1 General
6.3.1.8.2 Battery system not earthed — Bonding
6.3.1.8.3 Battery system is directly earthed
6.3.1.8.4 Battery system resistively earthed
6.3.1.9 Earth fault protection — Monitoring alarm
6.3.2 Energy hazard — Arc flash
6.3.2.1 Arc flash
6.3.2.2 Arc flash risk assessment
6.3.2.3 Battery system installed within a residential or domestic electrical installation
6.3.2.4 Battery system installed in non-domestic or non-residential electrical installations
6.3.2.5 Arc flash boundary
6.3.3 Mechanical hazard
6.3.3.1 General
6.3.3.2 Additional requirements for battery system and BESS enclosures
6.3.3.3 Additional recommendations for battery system rooms
6.3.3.4 Moving parts
6.3.4 Fire hazard
6.3.4.1 General
6.3.4.2 Fire hazard level 1 installation requirements
6.3.4.2.1 Domestic and residential electrical installation
6.3.4.2.2 Non-domestic and non-residential electrical installation
6.3.4.3 Fire hazard level 2 installation requirements
6.3.4.3.1 Domestic and residential electrical installation
6.3.4.3.2 Non-domestic and non-residential electrical installation
6.3.4.4 Battery management system (BMS)
6.3.4.5 Excess temperature
6.3.4.6 Minimum temperature
6.3.4.7 Overcurrent
6.3.4.8 Over voltage
6.3.4.9 Over-discharge
6.3.4.10 Protection against mechanical damage from external forces
6.3.5 Explosive gas hazard
6.3.5.1 General
6.3.5.2 Ventilation
6.3.5.2.1 General
6.3.5.2.2 Sealed valve-regulated lead acid cells
6.3.5.2.3 Rate of ventilation (lead acid)
6.3.5.2.4 Charging rate
6.3.5.2.5 Method of ventilation — Natural ventilation
6.3.5.2.6 Method of ventilation — Mechanical ventilation
6.3.5.2.7 Arrangement of ventilation
6.3.5.2.8 Other battery system chemistries
6.3.5.3 Additional requirements for battery system enclosures
6.3.5.4 Additional requirements for installation of battery system or BESS enclosures
6.3.5.5 Additional requirements for battery system rooms
6.3.6 Chemical hazard
6.3.6.1 General
6.3.6.2 Puncturing
6.3.6.3 Containment
6.3.6.4 Additional requirements for enclosures and rooms
6.3.7 Toxic fume hazard
6.3.7.1 General
6.3.7.2 Battery system rooms and enclosures requirements
6.3.8 Battery alarm system
6.4 System documentation, verification and commissioning
6.4.1 Documentation
6.4.1.1 General
6.4.1.2 System manual
6.4.2 Verification
6.4.2.1 General
6.4.2.2 Initial verification and visual inspection
6.4.2.3 Alterations and repairs
6.4.2.4 Testing
6.4.3 Commissioning
6.4.3.1 General
6.4.3.2 Induction
7 Labels and safety signage
7.1 General
7.2 Requirements for signs and labels
7.3 Battery type general labelling
7.4 Signs for battery system location
7.5 Restricted access
7.6 Voltage and current
7.7 Safety data sheet (SDS)
7.8 Explosive gas hazard
7.9 Toxic fume hazard
7.10 Chemical hazard
7.11 Arc flash
7.12 Disconnection devices
7.12.1 General
7.12.2 Battery system isolation device
7.12.3 Multiple isolation device
7.12.4 Disconnectors for DVC-B and DVC-C systems
7.13 Overcurrent devices
7.13.1 General
7.13.2 Multiple overcurrent devices
7.13.3 Fuse holders
7.14 Battery system cables
7.15 Segregation
7.16 Shutdown procedure
7.17 Battery labelling
7.18 Other equipment labelling
7.19 Spill containment
Appendix A
Appendix B
B.1 UN number in battery type sign
B.2 Typical signs
Appendix C
Appendix D
Appendix E
Appendix F
F.1 Overview
F.2 Arc flash incident energy
F.3 Arc flash incident protection boundary
F.4 Example calculations
F.5 Effects by different faults
Appendix G
G.1 Safety risk assessment for BESS and battery systems
G.2 Risk assessment principles for battery systems
G.3 Risk assessment example — Stand-alone power supply for rural property
Appendix H
H.1 General
H.2 Inspection
H.3 Maintenance
H.3.1 General
H.3.2 Maintenance tasks
H.3.3 Personal protective equipment
Bibliography
Cited references in this standard
[Current]
Low-voltage switchgear and controlgear, Part 2: Circuit-breakers
[Current]
Circuit-breakers for overcurrent protection for household and similar installations, Part 2: Circuit-breakers for a.c. and d.c. operation (IEC 60898-2, Ed. 1.1 (2003) MOD)
[Current]
Explosive atmospheres, Part 14: Design selection, erection and initial inspection (IEC 60079-14:2013 (ED.5.0) MOD)
[Current]
Installation and safety requirements for photovoltaic (PV) arrays
[Current]
Electric cables — Polymeric insulated, Part 2: For working voltages up to and including 450/750 V
Content history
[Superseded]
DR2 AS/NZS 5139:2019