GFS Power

DC Power Systems 48V or 24V

Centurion II Power System


Incredible Functionality, Flexibility, and Scalability in a 2 RU, 1.0 to 6.0 Kw DC Power System

  • 19″, 2U rack mount shelf with integrated power distribution
  • 90-250 VAC input, Power Factor Corrected
  • 3 power bays accept 1000 or 2000 watt modular rectifiers
  • 111 amp, 6000 watt total max. output capacity, (74 Amp, 4000 Watt, N+1) @ – 48 VDC
  • Output temperature compensated for precise battery charging
  • 16 DC circuit breaker distribution capacity, with tripped breaker alarm
  • Master disconnect breakers for two battery banks, with tripped breaker alarm
  • Controller with digital display of system parameters with TCP/IP interface and SNMP monitoring/logging
  • Alarm contacts monitor major system functions
  • Low voltage disconnect built in
  • Easily configures to meet site power requirements

System Power Configurations @ 48V* (220 VAC Input)
Watts Per Rectifier # of Rectifiers Installed
1 2 3
2000 37A (2000W) 74A (4000W) 111A (6000W)
1000 18A (2000W) 36A (4000W) 54A (6000W)
System Power Configurations @ 24V*
2000 37A (1000W) 74A (2000W) 111A (3000W)
* @ 120 VAC:Derate 2kW rectifiers: 41%; 1Kw: rectifiers 33%

AC Input:

  • Nominal: 230V
  • Voltage Range: 90-300V (derate @ 115 input)
  • Frequency Range: 45-65 Hz
  • Power Factor: >0.99
  • Efficiency: >94% (from 30-95% output power)

DC Output:

Voltage -48 volt +24 volt
Output Ratings: Constant power output
from 48V to 58V
Constant power output from
24V to 29V
Nominal Voltage: 48V 24V
Rated Voltage: 58V 29V


  • Rated maximum System Output Power: 6000W @ -48V, 3000 watts @ 24 volts
  • Polarity: Positive earth. 48 volt, negative earth 24 volt
Individual Rectifier Power: (24 and 48 volt) 1000 watt 2000 watt†
Amperage @ 230 vac in 18 37
Amperage @ 115 vac in 12 21
†Model C2R-2000 is rated for 1,000 or 37 amps at 24 volts

DC Distribution:

  • Load: 16 breaker position capacity, available amperages (specify) 6A, 10A, 20A, 30A and 50A with tripped breaker alarm. (50A circuit breaker is a special order – contact GFS Power for more information)
  • Battery: 2 x 100A battery circuit breakers.
  • Breaker Fail Detection: Electronic fail detection on both load and battery. Breakers
  • Low Voltage Battery Disconnect: 125A battery LVD installed standard, with disconnect alarm

Monitoring & Control:

Monitors all power system conditions including DC voltage, rectifier current, battery current, battery temperature, and distribution failure. Visual notification of alarm conditions by LED’s and a 4 line x 16 character alpha numeric display mounted on the front panel, with remote notification being enabled by relay contacts, RS232 or TCP/IP (using SNMP). It has a built-in web based controller allowing setup of system parameters using a web browser and utilizes a USB communications port which allows for local monitoring of system operations as well as easy downloading of configuration files for multiple site installations.


  • Current Limit: Adjustable to 50-100% of maximum rated current.
  • Over Temperature: Automatic current reduction, backup shutdown protection.
  • Polarity Reversal: Output fuse with crowbar diode.
  • Over Voltage: Adjustable limit.
  • Input Voltage: Auto shutdown, auto restart when correct voltage restored.
  • Input Inrush: <2x maximum input current.
  • Input Fuses: In phase and neutral.

Technical Characteristics:

  • Noise: Ripple <100Hz: <1mV rms unweighted
  • Voice band 100Hz-5KHz: <1mV rms psophometric
  • Wide band 5kHz-1MHz: <5mV rms unweighted
  • Peak to Peak 0-20MHz: <100mV peak to peak
  • Isolation: Input to Output: 4000V DC.
  • Input to Chassis: 3500V DC (VDR to chassis removed)
  • Output to Chassis: 2100V DC
  • Regulation: Line = +/-0.1%, Load = +/-0.5% (no load to full load)


  • Shelf: Dimensions / 19″ W x 3.5″ H x 15.35″ D /
  • Weight: 19.84 Lbs. (excluding rectifier modules)
  • Rectifers: Dimensions / 4.25″ W x 2.75″ W x 11.1″ D /
  • Weight: 3.15 Lbs
  • Cooling: Forced cooled


  • Ambient Temperature: Nominal: 25+/-5˚ C
  • Range:-10˚ C to +70˚ C (maximum output power is derated above +50˚ C)
  • Humidity: 5-95% RH (non-condensing)
  • Altitude: <8,202 ft., De-rate maximum ambient temperature by 4˚ C per 3,280 ft. above sea level.


  • Safety: EN60950
  • Electrostatic Discharge: CISPR24
  • Radiated Radio Freq: CISPR22
  • AC Harmonics: EN61000-3-2
  • AC Flicker & Fluctuation: EN61000-3-3
  • Other: CE & RoHS compliant

© GFS Power. Website by Mick's Design.