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What is the Efficiency of the EV Link Chargers?

1) Inside EV Link a mother board with a 24V power supply commanding a contact is installed. 
2) Less than 100W of consumption when the CT is closed. We are just a gate between the grid and the car.

So the maximum consumption is 100w (dedicated to 24v power supply, motherboard, contactor and led). Efficiency will be, 
If the load is a 3,7kW (16A 1P) efficiency = 97%
If the load is a 22kW (32A 3P) efficiency = 99,5%

But, also consider the Harmonics, Power factor produced by the Car itself which will affect efficiency. 
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