Military-Grade 3-Phase Input UPS 1500VA

MIL-SPEC Uninterruptible Power Supply with Lithium Polymer Battery Backup

UPS-1500 Series Uninterruptible Power Supply units are designed for the extreme environmental and demanding electrical conditions of Military/Aerospace applications. SynQor’s UPS incorporates field proven high efficiency designs and rugged packaging technologies. This UPS will accept a wide range of input voltage and frequency values while delivering a well-conditioned AC output to the load. Up to three units can be combined to provide higher power, higher voltage and/or multiple output phases.

The use of lithium polymer batteries permits the lowest profile and lowest weight solution in its power class. Options include a 500W or single 1250W DC output, a DC input rated for military 28 VDC sources, and an electronic breaker on the AC output provides fault-tolerant parallel operation for higher power and/or N+M redundancy.

As the figure below shows, there is a nominal 28 V mid-bus within the UPS that draws power from one of up to three power sources: the 3-Phase AC INPUT (primary source), the optional DC INPUT (secondary source) or the battery (backup source). EMI filters are present at all external inputs and outputs.

Compliance Features

  • MIL-STD-1399-300B – Interface Std for Shipboard Systems
  • MIL-STD-810G – Environmental Engineering Considerations
  • MIL-STD-461F – Electromagnetic Interference
  • MIL-STD-704F – Aircraft Electrical Power Characteristics
  • MIL-STD-1275D – Vehicle Electrical Power Characteristics

Main Features

  • Sealed, weather-proof, shock-proof construction
  • Hot swappable internal battery pack (lithium polymer)
  • >10 minute run-time at full power
  • 1250W (1500VA) output power
  • Full power operation: -20°C to +55°C
  • 3 Phase AC input: 85 – 140Vrms L-N (147-242Vrms L-L)
  • Wide range AC input frequency: 45-800Hz
  • Power factor correction at AC input
  • Dual input (AC and optional DC)
  • True on-line double conversion
  • Cold start with no AC or DC input connections
  • Pure sinusoidal AC output voltage (115VAC, 60Hz)
  • Handles 0.0—1.0 power factor loads and non-linear loads
  • Up to 3 units can be combined for higher power, voltage or a 3-Phase AC output
  • Up to 32 units can be combined to form a higher power fault-tolerant, glitch-free system, perhaps with N+M redundancy, by ordering with the “AC Output Electronic Breaker” option and the appropriate configuration cable
  • User I/O and Configuration signal ports
  • 1U high rack mount unit (17.00”W x 22.53”D x 1.73″H)

Manufacturing Process

  • AS9100 and ISO 9001 certified facility
  • Full component traceability


  • DC input (28 Vnom) for dual source
  • 2U Extended battery pack gives >24 minutes of run-time
  • Wide-range AC input frequency: 47 Hz to 800 Hz
  •  115 Vrms or 230 Vrms AC output
  • 50 Hz, 60 Hz, or 400 Hz output
  • DC1: Auxiliary isolated DC output (up to 500 W)
  • DC2: High power DC output (up to 1250 W) parallelable for higher power
  • Shipboard version with floating neutral wire

Specifications Table

Output PowerAC Input VoltageAC Output Voltage OptionsDC Input Voltage OptionDC Power  OptionBattery Run Time Options
1500VA/1250W115 VL-N / 200 VL-L 45-800HZ 3-Phase Delta115VrmsOR 230Vrms 50HZ, 60Hz OR 400Hz28Vnom500W or 1250W>10 Min – 1U
>240 Min – 2U