Current OS on 350V or 700V LVDC

The voltage levels are nominal voltages this is excluding the droop range defined by the Current/OS to define the State Of Balance (SOB) of the grid.
The nominal voltage tolerance can be maximal 1.4%. The Grid is isolated from the AC grid and have it's own grounding system.

• With ± 30VDC Droop the limit for direct touch disconnect time = 3 millisecond. So can be used in Home applications. In line with the IEC60479-2
• Clear number and labeling not confused by AC voltage levels in hybrid cases
• Similar design criteria's as 230V AC
• Makes it possible to replace the AC system
• Improvement in distribution in buildings
• Easy to convert existing AC designs to DC (based on Current/OS)
• In case for bipolar ±350V DC the 700V DC levels is available for larger power devices

• Isolation windings in motors is in the safe range
• Clear number not confused by AC
• Similar design criteria's as 400 .. 480V AC
• Lifetime improvement with 1200V semiconductors and capacitors
• In case for bipolar ±700V DC the 1400V DC levels is below the 1500V DC border this enable full range of the low voltage band (1500V DC) to use

There is a lot of discussion about the correct voltage level. This is not simple. It's important to select a level that is universal and can be used for different application, this is why we selected 350V/700V as the level that has the lowest compromises between the applications.

Applications

• Homes
• Offices
• Outdoor Public services

Applications

• Distribution
• Greenhouses
• Industrial applications