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Galaxy Series 72 VDC Nominal Input Pure Sine Wave DC-AC Inverters


  • Pure Sine Wave Output
  • Extremely Rugged Construction Suitable For Harsh Environments
  • High Reliability – MTBF Exceeds 100,000 hours
  • Overload, Overvoltage, and Overtemp Protected
  • MTTR below 30 minutes
  • Transformer-Isolated For High Inrush Loads
  • Withstands Highly Reactive Load
  • Tight Voltage and Frequency Regulation
  • Custom Voltages and Frequencies Available
  • Conformal Coated PCBs and All Stainless Hardware


The transformer-isolated Galaxy Series Rugged Inverters are designed for harsh environment, military, and rail applications, and feature an optional advanced Internal Suppression Filter Network (ISFN) to suppress the significant transients usually associated with these types of conditions. They can be built to meet MIL-STD-810, MIL-S-901, MIL-STD-1472, MIL-STD-461, MIL-STD-167 and other standards optionally. Transformer-isolated topology makes these Inverters suitable for very high inrush loads, such as motors and compressors. These models utilize the most durable components, offering maximum field-proven reliability for severe environment and high reliability applications such as:

  • Rail and Trolley Applications – 25, 91.66, 100, 200, and 250 Hz. available
  • Military Applications: Including HMMWV, UAV, Shipboard, Submarine, Aircraft, Mobile Power Units, Shelters, Transportable Systems, Tactical Systems, Ground Support, and more
  •  Heavy-Duty Industrial Applications
  • Demanding Commercial Applications
  • Communications Systems
  • Utility Applications
  • MIL-STD-810
  • MIL-S-901
  • MIL-STD-167


  • Input Voltage: 62 – 84 VDC (Extended range available)
  • Output Voltage: See Table
  • Frequency: 50 Hz, 60 Hz, 400 Hz (+/-0.5%)
  • Frequency Regulation: +/-0.5% N.L. to F.L.
  • Voltage Regulation: +/-1.5% N.L. to F.L.
  • Efficiency: Approximately 80% (depending on model)
  • Reactive Load: 0.75 Lead to 0.75 Lag
  • Distortion: 5% THD, 3% Single Harmonic
  • Overload: 125% for 5 minutes
  • Overload Protection Range: Automatic overload & short circuit protection
  • Sync & Phase Lock Range: +/-3 Hz, Typical (50/60 Hz models)
  • Transient Response: Approx. 1/4 cycle recovery to 95% of nominal
  • Operating Temp: -20°C to +50°C Standard -40°C to +71°C Optional
  • Cooling: By internal DC brushless fan
  • Vibration: Normal shipping and handling
  • Shock: 20g, 11 mS half sinewave
  • Humidity: To 95% RH non-condensing
  • EMI: Designed to meet FCC Part 15, Class A, Can meet MIL-STD-461 with additional filtering


  • Ruggedization against high shock, vibration and humidity
  • MS Connector Mates
  • Chassis Slide Guides
  • Internal Transfer Switch (Static or Electromechanical)
  • High IP Protection for front / rear panels (typically IP32,) including louvers on all intake and exhaust, as well as fully gasketed breakers, switches, and indicators.
  • Input Volt and Amp Meter Set (available on select models)
  • Elapsed Time Meter (available on select models)
  • Rugged Transit Cases and Custom Enclosures
  • Environmental Stress Screening Services