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    1. #1
      Join Date
      Nov 2018
      Posts
      993
      Country Flag: United States

      How to control current inrush for an HVAC compressor

      Have a question for the HVAC pros here.

      https://www.vmacs.net/products/red-d...t-e-6100-0-12p



      This is the unit in question. 12VDC air conditioning system, requires 100 amps to operate. That means it's likely seeing a 200A inrush current each time it clicks on, then a sudden 100 amp overload each time it shuts off and its load disappears. I know the battery can handle the short overload when the unit shuts off, but the inrush current is going to be a problem. Can this be controlled in any way, like perhaps with a capacitor and if so, what would be recommended? This is a system used on heavy equipment, but can be used on a tractor cab as well.

      Please limit discussions to this unit, not possible better solutions unless there's an R134a HVAC system out there I've not come across that operates on 12VDC and has at least 12,000BTU of cooling power (this one creates 11,900BTU of cooling power.) This unit suits my needs perfectly once I find a solution to the current inrush problem.





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