AS 4044:2024 specifies requirements for safe use and testing of stabilized constant-potential battery chargers that are designed to supply direct current power from an alternating current source, while charging a float-type stationary battery, and which may simultaneously supply power to a connected direct current system load
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Alternating current input characteristics
5.1 General
5.2 Rated voltage and frequency
5.3 Alternating current system earthing
5.4 Neutral connection
5.5 Unbalanced three-phase supply
5.6 Power factor
6 Direct current output characteristics
6.1 General
6.2 Operating conditions
6.3 Output current
6.3.1 Rated output current
6.3.2 Current limiting
6.4 Output voltage adjustment range
6.4.1 Float voltage range
6.4.2 Equalizing voltage range
6.4.3 Boost voltage range
6.5 Static load voltage regulation
6.6 Overcurrent protection
6.7 Alternating current power restoration
6.8 Start-up behaviour
6.9 Dynamic response
6.10 Ripple voltage
6.11 Efficiency
7 Safety requirements
7.1 General
7.2 Enclosure
7.2.1 Housing of live parts
7.2.2 Access
7.3 Isolating switch
7.4 Markings
7.4.1 Information to be marked
7.4.2 Output connections
7.4.3 Connecting cables
7.4.4 Transformer connections
7.4.5 Interconnecting wiring
7.4.6 Fuses and circuit breakers
7.4.7 Shock hazard label
7.5 Transformer construction
8 Environmental requirements
8.1 Operating temperature
8.2 Storage
8.3 Altitude
8.4 Humidity
8.5 Audible noise
8.6 Electromagnetic interference
9 Alarms, automatic shut-down facilities and meters
9.1 Alarms
9.1.1 Battery charger output failure alarm
9.1.2 Low direct current float voltage alarm
9.1.3 High direct current float voltage alarm
9.1.4 Alternating current power failure alarm
9.2 Automatic shut-down facilities
9.2.1 High direct current voltage shut-down
9.2.2 Selective high direct current voltage shut-down
