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
>24 Min – 2U

Series Table

Model NumberPowerBattery Run-time @Full Power ( 80% Power)Height Weight
UPS-1500-S-1U (1 Standard Battery Pack)1250W 1500VA>10 min. (>13min)1U32 lbs.
UPS-1500-E-2U (1 Extended Battery Pack)1250W 1500VA>24 min. (>31min)2U50 lbs.

Ask for Assistance

Selecting the right power supply for your application is not a small task. Let our technical sales engineers guide you through the process of choosing the right solution for your needs.

Below some parameters usually required to size and select the right power supply:

  • Power & control requirements
  • Output & Input Voltage / Multioutput Voltage / Variable Voltage
  • Redundancy level
  • Mounting
  • Inrush Current
  • Environmental specifications (Temperature, altitude, vibration, shock)
  • Specific Industries Standards (Railway, Military, Medical)
  • Terminals

Contact Our Team

Contact our team of experienced engineers to discuss your unique power conversion and backup needs. We offer a wide range of highly reliable components that can be integrated and customized to create a solution that meets or exceeds your requirements.

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