i would like to ask about battery charger i saw at work :) the plate on charger says:
Input voltage 3 phase ac
- Min 400v
- Nominal 400-415v
- Max 456v
- 110v DC 9kW
- 28v DC 3kW
Now if we do simple math with no losses input is 9012W. How can be output 12kW?
Or the manufacturer gives these readings as separate? When we charge only one kind of battery?