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Power Electronics > DC Power Supplies 200W-15kW > EMS 5kW


Lambda EMS - 600W, 1kW, 5kW, up to 600AThe EMS series are high power switch mode AC to DC power supplies for applications where high efficiency, precise regulation and a high degree of packing density and light weight are required. The range has been improved to include embedded IEEE/RS232.
  • Zero stacking
  • High power density
  • CE Mark on selected models
  • 650 microsecond transient response time
  • Built in OVP with front panel adjust
  • Built in thermal protection
  • CC/CV with auto crossover
  • Soft Start
  • Series or parallel master-slave operation
  • True zero voltage and current adjustability

Please note the EMS 600W & 1000W power supplies were made obsolete from 18th March 2005.  This is actually good news ... because the new replacement GENESYS range of programmable power supplies, sets a new standard for cheaper, flexible, reliable, AC/DC power systems in OEM, Industrial and Laboratory applications.

These replacement GENESYS power supplies are currently available in 750W & 1500W 1U and 3.3kW 2U.  Please click on NEW GENESYS, to take a closer look at the GENESYS range.

This series of high frequency switching power supplies is designed to operate as a source of constant current/constant voltage with automatic crossover. 

All EMS Power Supplies are fully programmable via an analog programming or (optional) RSTL digital interface, allowing for systems integration to meet your specific requirements.

The EMS series represents an important element in our broad line of switching power supplies. Beginning in 1969 with multiple patents awarded, Lambda EMI has continued to invest in the development and engineering of the EMS series. Successful applications include semiconductor processing, medical, scientific and research laboratories. The EMS series offers the best of customer tested and application proven features, while incorporating the latest advancements in technology for the user of power conversion systems. 


AC Input

5 kW models: 208 VAC three phase, 400VAC three phase (CE)
All models 50/60 Hz
Softstart AC inrush
Consult factory for other inputs

Output Characteristics 
Regulation: 0.1%
Stability: 0.05%
Transient response: 650 microseconds for 30% load change (models up to 20 VDC)
Operating temperature: 0-50 Deg C full output, derate above 50 Deg C
Protection Features
Overvoltage (up to 300 VDC outputs)

Front panel controls and remote analog resistance,
voltage and current programming (standard);
0-5 V and 0-10 V (optional) Internal RS232
and IEEE-488 (optional)
Embedded IEEE/RS232 available as option on 1kW models in 1U high chassis.

5kW - 19" W x 5 1/4" H x 22" D
5kW     - 60lbs/27kg

Standard Model Listing

 Model Number Rated Power
Output Voltage
Output Current
Output Ripple
(mV) p-p Carrier
EMS 7.5-600 5000 0-7-5  0-600  75
EMS 10-500  5000 0-10  0-500  75 
EMS 20-250   5000  0-20 0-250  75 
EMS 30-165 5000  0-30  0-165  75
EMS 40-125 5000 0-40  0-125  75 
EMS 60-80 5000  0-60  0-80  75 
EMS 80-60   5000  0-80  0-60  100 
EMS 100-50  5000  0-100 0-50  100 
EMS 150-33  5000 0-150  0-33 120
EMS 300-16  5000 0-300  0-16 150
EMS 600-8  5000 0-600  0-8 250

  Ordering Information











AC Input 




Special Programming 


Other products:



  • EMS Datasheet