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www.pulsar.pl 

                  SWB series                                              

 

 

 

Features: 

 

  Supply voltage ~200 - 240 V 

  High efficiency (85%) 

  Battery charging and maintenance control 

  Deep discharge battery protection 

  Battery charging current: 0,5 A / 2 A, jumper selectable 

  Metal enclosure 

– color white RAL9003 

  Removable universal mounting plate 

  Optical indication  

  Protections: 

   SCP short circuit protection 

   OLP overload protection 

   OVP overvoltage protection 

   surge protection  

   antisabotage protection: unwanted enclosure 

opening  

   against reverse polarity connection 

  Warranty 

– 2 years from production date 

 

TABLE OF 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. Maintenance 
 
 
 
1. Technical description. 
 

1.1. General description. 

Buffer  power  supply  system  for  PoE  switches,  SWB-120  is  designed  for  uninterrupted  power  supply  of  PoE 

switches with 52 V DC. It was designed based on high energy efficiency switching power supply module placed in metal 
enclosure (color RAL 9003). DC / DC converter used to increase voltage allows to reduce costs of system by limiting 
batteries to 2 pc. Enclosure has a place for 2 pcs of 17Ah / 12 V (SLA) battery and is equipped with a tamper switch 
signaling opening the door (front panel). Device is equipped with removable universal mounting plate, which allows to 
mount PoE switches with dimensions up to 245x150x90 (WxHxD) [mm].  
For example Pu

lsar’s models: 

S64, SG64, SFG64, SFG64F1, S108, SG108, SF108 

 

 

Device can operate in one of two configurations: 

 

1.  PoE output power 120 W + 0,5 A battery charging 

2.  PoE output power 80 W + 2 A battery charging 

 
 
 

1.2. Block diagram (Fig.1). 

 

 

 

Fig.1. Block diagram of PSU.   

Summary of Contents for SWB-120

Page 1: ...USER MANUAL EN Edition 1 from 24 09 2020 Supersedes the edition SWB 120 Buffer power supply system for PoE switches 52VDC 2x17Ah 120W ...

Page 2: ...ure 3 Maintenance 1 Technical description 1 1 General description Buffer power supply system for PoE switches SWB 120 is designed for uninterrupted power supply of PoE switches with 52 V DC It was designed based on high energy efficiency switching power supply module placed in metal enclosure color RAL 9003 DC DC converter used to increase voltage allows to reduce costs of system by limiting batte...

Page 3: ...te 4 Cable bushing 5 TAMPER microswitch of antisabotage protection NC 6 Switch power cable terminated with a DC 2 1 5 5 plug 7 BAT BAT battery output BAT red BAT black 8 Selection jumper for charging current Ibat 0 5 A Ibat 2 0 A Description jumper installed jumper removed ig 3 View of PSU 1 4 Specifications electrical parameters tab 3 mechanical parameters tab 4 operation safety tab 5 operating p...

Page 4: ... EN 62368 1 I first Degree of Protection EN 60529 IP20 Electrical strength of insulation between input input and output circuits of the PSU between input circuit and protection circuit between output circuit and protection circuit 2500 V AC min 1500 V AC min 500 V AC min Insulation resistance between input circuit and output or protection circuit 100 MΩ 500 V DC Table 4 Operating parameters Enviro...

Page 5: ...age to equipment or an electric shock 4 Connect battery in correct polarity 5 Make the selection is done with use of the IBAT jumpers see tab 1 6 Screw switch to mounting plate 7 Connect switch using cable terminated with a DC 2 1 5 5 plug 8 Mount inside enclosure 9 Connect the power 230 V 10 After installing and checking proper working the enclosure can be closed 3 Maintenance Any and all mainten...

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