Battery Charger: 27.6V 5A for Security Installations and Access Control

The BN54 Series is a new generation / smart Power Supply that is designed to provide battery backed-up power in the event of either the PSU or the battery being disconnected or short-circuited. When the AC supply fails, the battery will automatically be connected and will provide power until the ac supply is restored.If the battery has reached it’s disconnect voltage, it will automatically be disconnected to prevent deep discharge damage.

Designed for powering critical loads with battery back-up, in a wide range of Industrial applications and in particular Security installations and Access Control, with separate Load and Battery Charging circuits.A wide range of Signals, Led’s and Alarms, all aimed at providing the optimum solution for powering critical DC Loads.An isolated Common Fault relay has been provided which will operate if any fault is found (This is a fail-safe signal so will signal a fault even if no power sources are on/connected.


 Input Voltage 240Vac ( 200~264 )
 Input Frequency 47 ~ 63Hz
 Input Current 1A
 Earth Leakage <300μA @ 230Vac
 Hold Up Time 30ms @ 230Vac input, full load and no battery connected
 Power Factor 0.45 @ 230Vac and full load
 No load Power 1.5W
 Start up Time Typically 1.5 seconds
 Output Voltage 27.6V
 Output Current Load: 4A Battery: 1A
 Power Limit Typically at 115%
 Efficiency 80-85% @ 230Vac and full load
 OVP 105-125% latching. Recycle input after 30 seconds to restart
 Short Circuit Protection Hiccup mode
 Current Limit Primary side power limited
 Thermal Protection Primary side ( non-latching )
 Operating Temp. -10ºC to +70ºC (Derate 2.5% / ºC above 50ºC)
 Cooling Convection cooled
 Humidity 10-95% non-condensing
 Load Regulation ±0.75%
 Line Regulation ±0.5%
 Ripple & Noise 0.5% @ 230Vac , full load ( BW =DC-10Hz)
 Safety EN60950, Class I
 Isolation Input – Output / Case: 2200Vdc
 EMC EN55022 Class B Conducted EN55022 Class A Radiated
 Immunity EN61000-3-2 Class A Harmonics EN61000-4-4 Fast Transients EN61000-4-5 Surge EN61000-4-11 Voltage Dips

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