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www.pulsar.pl 

 

 

 

 

PSBOC1554828 

 

 

 

 

 
 

Features: 

 

 

54VDC/2,8A uninterrupted supply* 

 

wide range of supply voltage 

176÷264VAC 

 

high efficiency 86% 

     battery charge and maintenance control 

     deep discharge battery protection (UVP) 

 

battery charging current 0,5A/1A jumper 

      selectable 

     battery output protection against short circuit and 

reverse polarity connection 

 

LED indication 

 
    
    

  EPS technical output indicating AC power loss    

    

– OC and relay type 

   PSU technical output indicating PSU failure          

   

– OC and relay type 

  LoB technical output indicating battery low voltage  

   

– OC and relay type 

  protections: 

 

SCP short-circuit protection 

 

OVP over voltage protection 

 

surge protection  

 

OLP overload protection 

  warranty 

– 2 year from the production date 

 

 

 
CONTENTS: 
1. Technical description. 

1.1 General description 
1.2 Block diagram 
1.3 Description of PSU components and connectors 
1.4 Specifications 

2. Installation. 

2.1 Requirements 
2.2 Installation procedure 

3. Operating status indication. 

3.1 LED indication of operating status 
3.2 Technical outputs

 

4. Operation and use. 

4.1 Overload or short circuit of the PSU output  
4.2. Battery-assisted operation 

 

4.3. Maintenance 

 
 
1. Technical description. 
 

1.1 General description 

A buffer PSU is intended for an uninterrupted supply to devices requiring stabilized voltage of 

48V DC 

 (+/-15%).

 The PSU provides voltage of 

U=54V DC 

current efficiency: 

 

                                               1. Output current 2,3A + 0,5A battery charging

*

 

                                               2. Output current 1,8A + 1A battery charging

                                                

                                    Total device c battery charging current: 2,8A max

*

.

 

 
 
 

In the case of power failure from prime supply, the unit is instantly switched to battery assisted operation. 

The power supply unit features: short circuit, overload protection, overvoltage and thermal overload protection.  

 
 
 
 
 
 

 

 

 

                                                 

*

 

See chart 1

 

Summary of Contents for PSBOC1554828

Page 1: ...PSBOC1554828 v 1 0 PSBOC 54V 2 8A OC Enclosed buffer switch mode power supply unit with technical outputs EN Edition 2 from 01 06 2016 Supercedes edition 1 from 13 05 2016...

Page 2: ...description 1 2 Block diagram 1 3 Description of PSU components and connectors 1 4 Specifications 2 Installation 2 1 Requirements 2 2 Installation procedure 3 Operating status indication 3 1 LED indi...

Page 3: ...ating DC absence PSU failure relay type 6 LoB output indicating battery low voltage relay type 7 EPS AC absence technical output OC type 8 PSU output indicating DC absence PSU failure OC type 9 LoB ou...

Page 4: ...ection SCP electronic automatic recovery Overload protection OLP 105 150 of power supply automatic recovery Battery circuit protection SCP and reverse polarity connection polymer fuse Surge protection...

Page 5: ...paces in accordance with the 2nd environmental class with normal relative humidity RH 90 maximum without condensation and temperature from 10 C to 40 C The device shall be mounted in a metallic enclos...

Page 6: ...ted AC power absence is indicated by the AC diode going out green LED Fig 2 element 2 indicates DC power at the PSU output Under normal status the diode is permanently illuminated In case of a short c...

Page 7: ...ease of battery voltage UBAT 46V the output is switched into high impedance state hi Z relay output In case of a battery voltage drop UBAT 46V the contacts of the relay change over The power supply un...

Page 8: ...ays from the delivery to the service centre of the manufacturer 6 The repair period mentioned in item 5 may be prolonged if there are no technical possibilities to carry out the repairs or if the equi...

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