Description
SR750HI – 750W DC UPS
Standalone AC-DC Power Supply / Float Battery Charger for Lead-Acid Batteries
The SR750HL range is designed for use as a reliable and stable AC to DC power supply, or float charger for lead-acid batteries. Note that for float charging the output voltage must be set to approximately 15% above the nominal battery voltage models. This is done as the default voltage for the 12V model but must be specified at time of order for all higher voltage models.
Temperature compensation option is required when PSU is used for charging batteries. The temperature compensation feature ensures batteries are charged to full capacity in cold environments and protected from over-charging in hot environments.
Our range of 500W-750W models have relay alarms for monitoring output voltage, mains and PSU failure parameters. The new SR500HL model has improved its thermal reliability with two fans relocated to dissipate heat more effectively and increase life span of critical components such as capacitors, shunts, and transformers.
The standard input voltage of the unit is 180-264VAC but it can be easily customised to 88-132VAC for the American market. It can also be used as DC-DC converter, for more information about this application please contact our team of engineers at sales@heliosps.co.nz
Main Features
- Ideal for standby float charging of lead-acid batteries or standalone PSU
- Constant current limit and precise voltage control
- Temperature compensation option ( Required when charging batteries)
- Efficient modern “current mode”
- Relay Alarms Output ( High voltage, low voltage, mains or PSU fail)
- Suitable for parallel operation – N+1 Redundancy
- Rugged design and construction for long life and challenging environments
- Output Voltage from 12V to 48VDC. For 110VDC output voltage models check out the SR750L
Applications
- Security – Access Control
- Industrial Processes
- Switching Protection & SCADA
- Radio Repeaters – Remote Sites
- Vehicle mounted backup system
Accessories Supplied
- Mounting feet together with screws
- AC power cord 1.5m with IEC320 socket and NZ/Aust plug
- Mating screw-terminal plug for alarm outputs
- Crimp lugs for stud terminal versions
- DC screw terminal plug-in connector for ‘X’ version
- DC screw terminal plug-in anderson connector for “A”version
Options
- American Input Voltage 110VAC ( 88 – 135 VAC)
- 110VDC (88V – 135VDC) Input Voltage – can be used as a DC-DC Converter
- Communication Port
- RS232 (ASCII)
- SR485 (ASCII)
- MODBUS RTU
- SNMP, webpages
- Digital Input/Outputs: Customizable 2 digital inputs & 1 digital output
- Internal meter
- 19″ Rack Mount with V/I meter available, Wall mount
- N+1 redundancy
- Conformal Coating for harsh environments
- DC Connectors (see photos):
- M8 brass stud
- Plug-in style phoenix socket & mating screw terminal
- Anderson plug-in style connectors
