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 the time of order for all higher voltage models.
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 | 8.3 | 34.5 | 7.2 | 27-33 |
SR250HL36 | 36 | 6.9 | 41.4 | 6 | 34-43 |
SR250HL48 | 48 | 5.2 | 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)
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 |
Optional Input Voltage | 88 – 132 VAC |
Communication Port | RS232 (ASCII) |
RS485 (ASCII) | |
Modbus RTU | |
SNMP, Webpages | |
Inputs/Outputs | Customizable 2 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 |
MODEL CODE | BASE MODEL | SPECIAL FEATURES |
CSR176 | SR250HL12TFXL | Alarms (mains fail /overtemperature, dc high, dc low), temp. compensation, output voltage reduction at over temperature |
CSR151 | SR250HL24TXL | 10m tempco lead |
CSR165 | SR250HL24TXLP-LAN+ | Conformal coating for harsh environments |
CSR215 | SR250HL30XLPDC | Conformal coating and DIN clips with DC Input 110VDC/30VDC |
CSR218 | SR250HL24XLP | ‘DC OK’ LED off unless I>200mA, conformal coating, Vout =27V, when no input & I<200mA ‘Power OK’ LED flashes & ‘DC OK’ LED off. |
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