500W & 750W Standby Float Charger for Lead Acid Batteries
The SRL models are designed for use as a precision AC to DC power supply, or a 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. The SRL series can have an optional ethernet, RS485 or RS232 communications port fitted.
Features
Industrial quality AC/DC power supply
Standalone – benchtop or fixed mounting
Front panel controls & indication
Suitable for float charging of lead-acid batteries
Suitable for parallel operation
Conservative design for long life
Precise voltage and current control
Optional Features
American Input Voltage 110VAC ( 88 – 135VAC)
Communication Port ( RS232 ASCII – SR485 – MODBUS RTU – SNMP , webpages)
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
SERIES TABLE
Model
Output (V)
Output (A)
Power (W)
SR500L12
13.8
36.2 (41.6 @ 12V)
500
SR500L24
24
20.8
500
SR500L30
30
16.6
500
SR500L36
36
13.8
500
SR500L48
48
10.4
500
SR500L60
60
8.3
500
SR500L91
96
5.2
500
SR500L92
108
4.6
500
SR500L93
120
4.1
500
SR750L12
13.8
36.2 (41.6 @ 12V)
750
SR750LA24
24
20.8
750
SR750L30
30
16.6
750
SR750L36
36
13.8
750
SR750L48
48
10.4
750
SR750L91
96
5.2
750
SR750L92
108
4.6
750
SR750L93
120
4.1
750
SPECIFICATIONS TABLE
ELECTRICAL
Input
180V – 264V ( 88V-132VAC option)
Frecuency
45-65Hz
Fusing
Internal AC input fuse
Overcurrent protection
Constant current limit under overload and short circuit conditions (except DC input versions which have primary current limit)
Isolation
1KV DC input – output / earth
Efficiency
> 85%
Hold-up time
15 – 20 ms without batery
Alarms
Mains fail (or PSU in standby mode)
DC low (Battery low or PSU low) – set at 92% of nominal voltage.
DC high
Alarm relay contacts
C – NO – NC changeover rated 1A /50V DC, 32VAC
MECHANICAL
AC Input Connector
IEC320 inlet socket
Comms
Choice of RS485 ,RS232, Ethernet
Protocols
SNMP v1 or Modbus (external converter)
Dimensions
146.5 W x 62 H x 177 D mm (SR100L) , 150W x 61H x 242D (SR250L)
Weight
0.94Kg (SR100L) , 1.7Kg(SR250L)
ENVIRONMENTAL
Operating temperature
0 – 50 °C ambient at full load De-rate linearly >50 °C to no load @ 70 °C
Storage temperature
-10 to 85 °C ambient
Humidity
0 – 95% relative humidity non-condensing
Cooling
Fan cooled
STANDARDS
Emi
To CISPR 22 / EN55022 class A
Safety
To IEC950 / EN60950 / AS/NZS3260
Custom Solutions
CAB365 is a 750W 24VDC redundant battery charging system in a 12U 19-inch wall mount cabinet. The system comprises of two SR750L24FSL in 2U 19” sub-racks with a 50A decoupling diode, Digital V/I meter and Alarm card and LVD for protection. The system is set to provide 27.2VDC at the output of the decoupling diodes to float charge the batteries and provide the load. The output voltages of the SR750L24FSL’s are front adjustable with a variable potentiometer on the front of the chargers.
The AC input of a charger is protected with a 6A AC Input MCB and the output of the 2U chargers is protected with 32A 2P MCB. A P50 diode in the positive output of the chargers ensures redundancy configuration of the chargers in the system. The system output is monitored with a Digital V/I meter and Alarm Card and a LVD controlled by the Alarm Card disconnect the load if the battery voltage drops to 22VDC. A 63A load isolator ensures isolation of the load from the chargers and battery. A 63A single pole battery breaker protects the battery and the system is also equipped with an Emergency 24VDC Input connection on WDU10 terminals which is protected with a 63A single pole Emergency Input MCB.
Features of CAB365 include
750W 24VDC Redundant charger in a 12U 19” wall mount cabinet
Charger output voltage front adjustable on chargers
