Power Systems · 1 product
New Product LineMilitary UPS Systems
Double-conversion online uninterruptible power for ship and shore systems
Radar, communication and mission consoles must not drop out, even for a moment, when mains or shore power fails. A military UPS keeps that interruption away from the load by feeding it continuously from its own inverter: in a double-conversion (online) topology the input is first converted to DC and then to a clean 115 VAC 60 Hz pure sine; when the input fails the battery takes over and the load sees no transfer. The PowerGuard MIL-UPS-2K3 is designed and manufactured for this job by TEDEG in Ankara.
Military UPS Systems — products
TEDEG Defence is an Ankara-based Turkish defence manufacturer that designs and builds double-conversion online military UPS systems for ship and shore systems.
All products in this and the other six categories: Product Catalogue 2026 (PDF)
About Military UPS Systems
MIL-UPS-2K3 at a glance
- Topology: double-conversion online with an AFE (active front end) input; disturbances on shore power are not passed to the load
- Input: 115 VAC ±20%, 45–65 Hz, 3-phase
- Output: 115 VAC ±2.5 VAC, 60 Hz, pure sine; THD < 3%, regulation ±2%
- Power: 2.3 kVA (750 W nominal, 2.3 kW maximum)
- Backup: VRLA gel battery; 30 minutes at 2 kW
- Load: stable with capacitive loads down to a 0.3 power factor
- Maintenance and monitoring: manual bypass transfers the load without interruption; guarded emergency stop, silenceable alarm, BIT; monitoring and remote on/off over Ethernet (KN6)
- Standards: designed to MIL-STD-1399, MIL-STD-810G and MIL-STD-461F
What to check when choosing a military UPS: the apparent power (kVA) and power factor of the load; if the load is capacitive or has a low power factor, make sure the UPS is designed for it. Output voltage and frequency (often 115 VAC 60 Hz on ship and shore systems), the required backup time and the load during that time, battery type and maintenance conditions, bypass and remote monitoring needs and the temperature at the installation also decide the choice.
Why not a commercial UPS? Commercial UPS units often become unstable with capacitive and low power-factor loads, which is exactly what radar and sonar electronics present. The MIL-UPS-2K3 is designed for these loads, for the shipboard electrical interface (MIL-STD-1399) and for military environmental conditions.
The 30-minute backup at 2 kW is TEDEG manufacturer data; it is not yet shown in the current datasheet. For a 400 Hz or 60 Hz supply see military frequency converters; for short-term DC backup see power management and protection. Send your load list and backup time through the quote form.
FAQ
What is an online (double-conversion) UPS and why is it used in military systems?+
In an online UPS the load is always fed from the inverter: the input voltage is converted to DC and then back to AC. When the mains fails, the inverter keeps running from the battery, so the load sees no transfer. Because the output is separated from voltage and frequency disturbances at the input, radar, communication and console loads run on a clean pure sine.
Can the MIL-UPS-2K3 supply capacitive loads?+
Yes. It is designed to run stably with capacitive loads down to a 0.3 power factor. Loads with large input capacitors, common in radar and sonar electronics, fall into this group.
How long is the backup time?+
30 minutes at a 2 kW load with the VRLA gel battery. The time increases as the load falls; if a different time is needed, battery capacity is assessed per project.
Does taking the UPS out of service for maintenance interrupt the load?+
No. The manual bypass transfers the load to the bypass line without interruption, so the load keeps running while the UPS is serviced and tested.
How is it monitored remotely?+
It is monitored and switched on and off remotely over the Ethernet interface (KN6 connector). The unit itself has information and fault displays, BIT (built-in test) and a silenceable alarm.
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