GFS Power

DC Power System 48V

Commander Power System


Incredible Functionality, Flexibility, and Scalability in a 5 RU, 1.0 to 14.0 Kw DC Power System

  • 19″, 5U rack mount shelf with integrated power distribution
  • 90-250 VAC input, Power Factor Corrected
  • 7 power bays accept 1000 or 2000 watt modular rectifiers
  • 259 amp, 14,000 watt total max. output capacity, (222 Amp, 2,000 Watt, N+1) @ – 54 VDC
  • Output temperature compensated for precise battery charging
  • 18 DC circuit breaker distribution capacity, with tripped breaker alarm, 63 amp max. circuit breaker rating
  • Master disconnect breakers for four 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 4 5 6 7
2000 37A
* @ 120 VAC:Derate 2kW rectifiers: 41%; 1Kw: rectifiers 33%

AC Input:

  • Nominal: 230V
  • Voltage Range: 90-300V (derate @ 115 input)
  • Wiring Options: Single 208-240VAC, 3 phase, 4 wire WYE (‘Y’) input or  3 x separate 208-240VAC, 2 wire inputs
  • Frequency Range: 45-65 Hz
  • Power Factor: >0.99
  • Efficiency: >94% (from 30-95% output power)

DC Output:

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


  • Rated maximum System Output Power: 14,000W @ -48V
  • Polarity: Positive Earth (or specify)
  • Individual Rectifier Power:
(48 volt) 2000 watt
Amperage @ 230 vac in 37
Amperage @ 115 vac in 21

DC Distribution:

  • Load: 18 breaker positon capacity, available amperages (specify) 6A, 10A, 15A, 20A, 30A and 63A tripped breaker alarm
  • Battery: 4 x 100A battery circuit breakers.
  • Breaker Fail Detection: Electronic fail detection on both load and battery breakers
  • Low Voltage Battery Disconnect: 300A 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 configurator 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 8.75″ H x 15.35″ D /
  • Weight: 35.15 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.