Military Power Supply Solutions – COTS & MOTS

Rugged, Custom Military Power Supplies

Military Power Supply SolutionsSchaefer’s rugged construction ensures long-life, reliable operation and our unique design and manufacturing capabilities permits us to offer an endless combination of input and output voltages for your vital military power supply needs. Let our experienced team help modify an existing product or design a custom product that will deliver the right solution for your military power conversion application. Schaefer is ITAR compliant and JCP listed.

Schaefer excels in mission-critical military power supply solutions designed for harsh and rugged environments that comply to the stringent MIL-STD specifications including MIL STD 810 and MIL STD 1399, (see complete list below). We offer an extensive range of military power supplies that includes: Military AC DC Power Supplies, Military DC DC Converters, Military Rectifiers, Military-Grade Battery Chargers, Military DC-AC Sine Wave Inverters.

Military Power Supplies Feature:

  • Robust Designs
  • High Reliability (high-rel)
  • Increased Mechanical Strength
  • Multiple Cooling Topologies (liquid-cooled or fan cooled)

Our Military Power Supply Solutions Include:

  • COTS (Commercial-Off-The-Shelf)
  • MOTS (Military-Off-The-Shelf)
  • Custom Military Power Solutions that are Specifically Developed for Military Communication, Laser, Radar, Sonar, Subsea, and Mission Critical Systems Markets.

COTS Military Power Converters

We can build a majority of our COTS military power converters into sealed high IP rated enclosures with increased mechanical strength and hermetically sealed MIL connectors.

Military Power Conversion Solutions

COTS, MOTS and Custom Military Power Solutions

With almost 50 years of experience and thousands of custom designed power products, you can rely on our engineering and manufacturing expertise for your specific application needs. We easily can optimize our standard products by installing them into custom enclosures, adding meters, switches or any other required functionality. Typically with little or no NRE! Let us be your Engineering Department! From concept to first articles to production, we research and provide testing for thermal analysis, FMECA, Halt, Hass, loop stability/optimization, MTBF, FIT, PDR, and CDR.

See additional examples of Schaefer’s MOTS and Custom Power Solutions.

NEW MIL-COTS Inverter Series

Schaefer’s electrical and mechanical engineering teams are true industry craftsmen. As a standard option, we can build a majority of our COTS power converters into sealed high IP rated enclosures with increased mechanical strength and hermetically sealed MIL connectors. Contact us to discuss your miltary power supply requirements or to request a quote.

Examples of Higher Power MIL Systems

Heavy Industrial & Military – Energy Storage for Ships, Barges, Docks, Field. Base, etc…

Military Standards and Features

  • AC / DC power supplies & battery chargers
  • DC / DC converter
  • DC / AC inverter
  • AC / AC frequency converter
  • Active harmonic filters
  • Electronic load

To ensure a high reliability and quality of our power supplies, they have to pass through internal testing for high industrial requirements. Furthermore, they can be tested against increased shock and vibration resistance, as well as extreme environmental conditions. All components are selected according to criteria of durability, availability and performance. According to customer requirements national and international standards can be tested in cooperation with external laboratories.

  • EN 50178
  • EN 60664-1
  • EN 60950-1
  • EN 61000-6-2
  • EN 61000-6-4
  • EN 55011 / EN 55022 class A
  • EN 61140

According to customer requirements national and international standards can be tested in cooperation with external laboratories. For additional MIL Specs contact us.

  • MIL STD 461 (CE, CS, RE, and RS)
  • MIL STD 1332B
  • MIL STD 810
  • MIL STD 901
  • MIL STD 1275
  • MIL STD 1399-300
  • MIL STD 704
  • MIL STD 202
  • MIL STD 167
  • MIL STD 740

By default, all devices are designed with electronic current limiting, overvoltage protection and continuous short circuit protection. Optionally, the modules can be expanded as follows:

  • Inrush current limiting
  • Reverse polarity protection for DC input
  • Decoupling diode for redundant / parallel operation
  • Active current sharing for parallel operation
  • Hot-pluggable solutions
  • Monitoring of input and output voltage
  • Output programmable
  • Power factor correction (PFC) for single phase input
  • Temperature compensated charging voltage
  • Automatic / manual selection of charging characteristics
  • Remote ON / OFF (inhibit)

By default, all modules will be offered as a 19″ module or 19″ sub-rack according to IP20. Optionally, the modules can be expanded as follows:

  • Wall mount, chassis mount, DIN-rail mount, 19″ rack or customized design
  • Fan or liquid cooled
  • Mating connectors, wiring and monitoring instruments in accordance to the customers’ requirements
  • Digital or analog V- and A-meters
  • Monitoring & programming via potentiometer, analog signals or RS232 / IEEE488 interfaces
  • Designed for a high level of shock and vibration
  • Tropical protection finish on all circuit boards and components to ensure an increased protection category to protect the module from extreme climatic conditions
  • Robust enclosure that can withstand wind, sun, salt water, dirt or dust.
  • Hermetically sealed enclosure for high protection category
Military Products
  • AC / DC power supplies & battery chargers
  • DC / DC converter
  • DC / AC inverter
  • AC / AC frequency converter
  • Active harmonic filters
  • Electronic load
Engineering Standards

To ensure a high reliability and quality of our power supplies, they have to pass through internal testing for high industrial requirements. Furthermore, they can be tested against increased shock and vibration resistance, as well as extreme environmental conditions. All components are selected according to criteria of durability, availability and performance. According to customer requirements national and international standards can be tested in cooperation with external laboratories.

  • EN 50178
  • EN 60664-1
  • EN 60950-1
  • EN 61000-6-2
  • EN 61000-6-4
  • EN 55011 / EN 55022 class A
  • EN 61140
Military (MIL) -Standards

According to customer requirements national and international standards can be tested in cooperation with external laboratories. For additional MIL Specs contact us.

  • MIL STD 461 (CE, CS, RE, and RS)
  • MIL STD 1332B
  • MIL STD 810
  • MIL STD 901
  • MIL STD 1275
  • MIL STD 1399-300
  • MIL STD 704
  • MIL STD 202
  • MIL STD 167
  • MIL STD 740
Electrical Features

By default, all devices are designed with electronic current limiting, overvoltage protection and continuous short circuit protection. Optionally, the modules can be expanded as follows:

  • Inrush current limiting
  • Reverse polarity protection for DC input
  • Decoupling diode for redundant / parallel operation
  • Active current sharing for parallel operation
  • Hot-pluggable solutions
  • Monitoring of input and output voltage
  • Output programmable
  • Power factor correction (PFC) for single phase input
  • Temperature compensated charging voltage
  • Automatic / manual selection of charging characteristics
  • Remote ON / OFF (inhibit)
Mechanical Features

By default, all modules will be offered as a 19″ module or 19″ sub-rack according to IP20. Optionally, the modules can be expanded as follows:

  • Wall mount, chassis mount, DIN-rail mount, 19″ rack or customized design
  • Fan or liquid cooled
  • Mating connectors, wiring and monitoring instruments in accordance to the customers’ requirements
  • Digital or analog V- and A-meters
  • Monitoring & programming via potentiometer, analog signals or RS232 / IEEE488 interfaces
  • Designed for a high level of shock and vibration
  • Tropical protection finish on all circuit boards and components to ensure an increased protection category to protect the module from extreme climatic conditions
  • Robust enclosure that can withstand wind, sun, salt water, dirt or dust.
  • Hermetically sealed enclosure for high protection category

MIL-K Series Military Power Supply Solution

New MIL-K COTS Series of Power Solutions feature robust construction and are best suited for use in today’s military environment. Our standard series can be tailored and optimized to meet your specific project requirements (COTS, MOTS, and custom).

MIL-K series of high power, air or liquid cooled, current or voltage controlled, power solutions are specifically developed for the Military Communication, Laser, Radar, Sonar, Subsea, and Mission Critical Systems market and are designed for the harshest of environments.

Please consider the Schaefer MIL-K COTS Series for your next mission critical power project and telephone or email us to discuss your application in detail at military@Schaeferpower.com

  • Military-Grade AC/AC Frequency Converters
  • Military-Grade DC/AC Inverters
  • Military-Grade UPS and Power Distribution Units (PDUS)
  • Military-Grade Active Harmonic Filters
  • Military-Grade AC/DC Power Sources
  • Military-Grade DC/DC Converters
  • Military-Grade Battery Chargers
  • Air or Liquid Cooled

Latest Projects

Featured Products: 5kW, 10kW Power Supplies and Active Harmonic Filter

5kW and 10kW High Dynamic Power Supplies for Harsh Military and Industrial Applications.

  • Laser Industry: Pulse or injection locked lasers
  • Welding Industry: Micro electronic beam-, seam- & spot welding
  • Industrial Automation: Cutting or drilling processes
  • Radar Systems

Examples of Older COTS & MOTS Military Power Supply Projects

We are unable to show our cutting-edge projects due to NDAs & ITAR

 Project TypeHighlights
Military Project• Power Factor Corrected (PFC) three-phase input
• Designed and tested for MIL-STD-1399, MIL-STD-461, MIL-STD-810, MIL-STD-901, etc...
Military Base Battery Charging System Secure, Safe Chemical Shelter• 36+ Battery Chargers in One Enclosure
• 12VDC and 24VDC Batteries
• Features: Breakers, Fuses, Reverse Polarity Protection, Battery Voltage Sensing, Incorrect Mode, Power and Failure Indicators, Front Panel Voltage Adjustment
Military Grade 19″ Rack Power Supply• Battery charger and inverter in one 19″ rack
• Robust design with increased mechanical strength
• Installed in a highly demanding environment within a suit of armor
Converter Eurofighter Mains Simulation• 400Hz mains simulation
• 3-phase AC output or 3 individual DC outputs
• Each output voltage and frequency independently RS232 programmable
Inverter with Parallel Function On-Board Mobile Applications• DC Input from generator or battery power
• MIL-STD 461E, MIL-STD 1322B, MIL-STD 810F
• Rugged design handles extreme shock, vibration, temperatures and altitude changes
• DSP controlled inversion for optimum power control
• Application specific extremely compact design
• Compressor application with 11x nominal load surges
• Military Grade 5kW Power Supply
• Populate 5U rack with three vertically mounted units
• Populate 3U rack with two horizontally mounted units
• High power density
Aircraft Starter System• 290VDC Power Supply System
• Dual 700A configuration
• Powers a highly inductive turbine load
Multiple Battery Charger Navy Vessel Application• Shore Power & Internal Power
• Independently Charges & Monitors Multiple Batteries
• High IP Rating / Sealed Enclosure
• Maintenance Mode

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