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SI48 3U (48V / 21-48A)

The SI48-28 and SI48-48 power systems have been designed for powering the 48V DC devices with the DC current of 28A (SI48-28) and up to 48A (SI48-48) respectively in a common positive bus system.

The power systems are built on the basis of hot plug rectifiers. In the power systems, you can mount up to four rectifiers increasing in this way  the maximum current efficiency.

The system of the device provides direct floating operation (rectifier units and powered devices are connected with rechargeable battery banks in parallel).

All the connections of the power systems are made on the back panel, but the entire service process, including exchange of fuses, is possible on the front panel.

 

  • professional telecommunications (telephone exchanges and access systems)
  • subscriber telecommunications
  • industrial automation systems
  • communication via RS-232 or RS-485
  • cooperation with external communication modules
  • cooperation with computer software
  • record of event history in non-volatile memory
  • input for two external alarms
  • digital measurement of voltage, current and temperature
  • optical, audible and remote signalization
  • full control of correct operation
  • overload control outputs
  • battery continuity check and LVDD
  • low and high battery voltage control
  • automatic battery charging with charging current limitation
  • precise maintenance of floating operation voltage - dependence on temperature

 

  Name Output current Power Additional data
SI48-28-32
21A
1050W
SI48-28-33
21A
1050W
SI48-28-42
28A
1400W
SI48-28-43
28A
1400W
SI48-48-32
36A
1800W
SI48-48-33
36A
1800W
SI48-48-42
48A
2400W
SI48-48-43
48A
2400W

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