PXe-BLS Dual Redundancy Pure Sine AC Source for mission critical loads

The PX-BLS Series is an AC output Power Source used for mission-critical applications where loss of power would be catastrophic, highly disruptive at best.  The PX-BLS is different to a UPS, as its inverter is both dual input and intelligent – designed to draw energy from 2 or more ac or dc sources. Rack mountable and easy to install, its key features are listed below:-


  1. Dual Input Design:
    • Equipped with a 96V / 110V / 220V / 230V AC power supply
    • Also features a 24V / 48V / 110V / 220V DC power supply
  2. Communication Application Focus:
    • Specifically designed for the high reliability requirements of communication systems
  3. Filling a Gap:
    • Addresses a gap between traditional UPS power supplies and common pure sine wave inverter solutions
  4. Clean, Stable, and Durable AC Power:
    • Utilizes a novel design structure to provide clean, stable, and durable AC power for critical loads
  5. Seamless Conversion:
    • Dedicated communication pure sine wave inverter design ensures seamless conversion between AC and DC power supplies
  6. High Reliability:
    • Offers the same high reliability as the DC power supply system, emphasizing its dependability for critical applications
  7. No Conversion Delay:
    • Boasts almost no conversion delay during the power supply transition
  8. No Need for Static Switch:
    • Eliminates the need for a static changeover switch in the conversion process
In summary, the PX-BLS Series Inverter is meets the demanding requirements of critical applications, like communication systems, by offering a triple redundant reliable fail-safe solution for critical power supply needs.  Its dual input inverter design and seamless changeover contributes to its appeal for applications where uninterrupted ac and high-quality power is crucial.


PX BLS Mission critical ac source with dual redundancy


  1. Telecom base station/ Cable TV Equipment
  2. Communication Station
  3. Computer data centre
  4. SCADA Networks and Data Equipment
  5. Phone and cell base stations
  6. Radio Base stations / Cell Sites
  7. Monitoring centre room
  8. City WIFI device
  9. Emergency communication systems
  10. Railway & metro networks
  11. Distributed Antenna Systems
  12. Marine & offshore
  13. Building Management Systems
  14. Fire Alarm Systems
  15. Power utilities System Control  % Scada
  16. Power plant control and data systems
  17. Power monitoring systems
  18. Solar power system PV comms
  19. Wind energy system


  1. True sine wave output (T.H.D < 3%)
  2. Large 128*64 digital Lcd display data information
  3. Standard 19” Rack mount case
  4. Routes Dry contact for system trigger (DC input fault, AC input fault, overload information, by-pass
  5. Information and output fault reporting
  6. RS232 and RS485 & Optional SNMP communication Port
  7. Power-on self-test, Soft output start
  8. Auto switch function: DC to AC, AC bypass, less than 5mS
  9. By-pass AC 220V input filtering
  10. Real-time monitoring of the system operating status
  11. Audible and visual alarm
  12. Automatic start temperature control fan
  13. Build in voltage regulator Stabilize AC voltage
  14. Maintenance bypass / DC available
  15. Protection : Short load protection, over load protection, battery over / under voltage protection,
  16. Unattended operation: the system switches automatically to ensure continuous AC Power to the critical load
  17. Automatic selection between DC input and AC input

Hardware structure and working principle

Hardware structure and working principle

AC power supply mode

AC power supply mode

DC power supply mode

DC power supply mode


Technical Index(VA)


22Vdc — 28Vdc | Rate Voltage 24Vdc, Power off Voltage ≤20Vdc, ≥30Vdc
45.5Vdc — 57Vdc | Rate Voltage 48Vdc, Power off voltage ≤40Vdc, ≥60Vdc
104Vdc — 131Vdc | Rate Voltage 110Vdc, Power off voltage ≤90Vdc, ≥135Vdc
208Vdc — 260Vdc | Rate Voltage 220Vdc, Power off voltage ≤180Vdc, ≥275Vdc


Output Capacity(VA)
Rated output Power(W)
0.8KW, 1.6KW, 2.4KW, 3.2KW, 4KW, 4.8KW, 6.4KW, 8KW
Rated Output current
3.6A, 7.3A, 11A, 14.5A, 18.2A, 21.8A, 29A, 36.3A
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