SR250HL – 250 W – Power Supply/Battery Charger

The SR250HL 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.

APPLICATIONS

  • Security – Access Control
  • Industrial Processes Switching Protection
  • SCADA
  • Radio Repeaters – Remote Sites

POINTS OF DIFFERENCE

  • Ideal for standby float charging of lead-acid batteries
  • Constant current limit and Precise voltage control
  • Temperature compensation option
  • Efficient modern “current mode”
  • Relay Alarms Output
  • Suitable for parallel operation
  • Rugged design and construction for long life and   challenging environments

OPTIONAL FEATURES

  • American Input Voltage 110 VAC ( 88 – 135 VAC)
  • Communication Port ( RS232 ASCII – SR485 – MODBUS RTU  – SNMP , webpages)
  • Digital Input/Outputs: Customizable 3 digital inputs & 1 digital output.
  • Mounting: DIN rail , Rack Mount 19″ with V/I meter available, Wall mount
  • N+1 redundancy
  • Boost Charger

 

SERIES TABLE

MODELS Power Supply Battery Charger* Adjustable range (V)
Output
Volts
(factory
default)
Output
Current (A)
(continuous)
Output
Volts*
(Charging) 
Output
Current (A)
(Charging)
SR250HL7.5 7.5 20 6.9 20(140 W ) 6.8-8
SR250HL12 13.8 18.1 13.8 18.1 11-14
SR250HL24 24 10.4 27.6 9 22-28
SR250HL30 30 3.3 34.5 7.2 27-33
SR250HL36 36 2.8 41.4 6 34-43
SR250HL48 48 2.1 55.2 4.5 45-57
SR250HL60 60 4.1 69 3.6 54-69

*Please specify on ordering if unit is to be used for battery charging duty (except for 12V version which is set for 13.8V as standard)

SPECIFICATIONS TABLE

Output power 250 W (0-50°C )
Input Voltage 180V – 264VAC 45-65Hz
Output Voltages 7.5V, 13.8V, 24, 30V, 36V, 48 V
Other voltages by request
Voltage Adj. Range 85% – 105% of Vout
Overcurrent protection Constant current limit under overload and short circuit conditions
Isolation Input – earth – 2.5KVdc
Output – earth – 500Vdc
Efficiency > 85%
Inrush Current < 30A , 1.8ms
Operating temperature -20  to 50 °C ambient at full load
Humidity 0 – 95% relative humidity non – condensing
Cooling Natural convection except for 12 V
LED Indication Green: DC OK
Green: Power OK
Red: Standby
Alarms Relay Form C contacts changeover, rated 30VDC,2A/110VDC,0.3A/125VAC,0.5A
DC High
POWER  (mains fail, PSU fail)
DC Low
Line Regulation <0.04% over input range
Load Regulation <0.5% open circuit to 100% load
Noise <0.3%
Transient response 200mV over/undershoot,
Load step 20-100%, 400us settling time
Hold-up time 15-20 ms (nom-max. Vin) without battery

COMMS DOWNLOADS

SR – SRH Series – Downloads

 

 

OPTIONAL FEATURES

Optional Input Voltage 88 – 132 VAC
Communication Port  RS232 (ASCII)
RS485 (ASCII)
Modbus RTU
SNMP, Webpages
Inputs/Outputs Customizable 3 Digital Inputs and 1 Digital Output
Temp. Compensation Temperature sensor on 1.7m lead with adhesive pad: -4mV / °C / cell ±10%
Mounting  DIN Rail
Standalone
19”Rack Mount – Optional V/I meter for subrack : SR-Meter
N+1 Redundancy Using 2 chargers each with its own battery
Boost Charger Customizable feature on request

MODELS REPLACED BY SR250HL

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