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3phase power per phase ??

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Hello 😊

 

Having a brain fart here.

 

With a 12kw 3phase Sunsynk.

 

There is a load of 3500watts. It is a 3 phase machine and has a Neutral.

 

Now is the power per leg or phase 3500/√3 =2023watts per phase ?

 

or is is a simple 3500/3 = 1166watts ?

 

I want to know how much power will be on each phase so I can better balance the loads.

32 minutes ago, Dylboy said:

Hello 😊

 

Having a brain fart here.

 

With a 12kw 3phase Sunsynk.

 

There is a load of 3500watts. It is a 3 phase machine and has a Neutral.

 

Now is the power per leg or phase 3500/√3 =2023watts per phase ?

 

or is is a simple 3500/3 = 1166watts ?

 

I want to know how much power will be on each phase so I can better 

Not sure why you need the power per phase. The inverter need to supply a 3.5kW load and at PF of 0.8 the inverter might have to supply 4.4kW. Each leg will thus need to provide 6.32A at a 230V to N at 120 degrees apart. 400V ph to ph. Adjust for different power factors. May be PF is not taken into account? 

Tell me I am also not on the same bus :)

  • Author

Well my concern is the 12kw Sunsynk is rate sat 4kw per phase, I need to them add another single phase 2.4kw to it. 

 

Basically I will have a 3phase load of 3500watts I then need to also run a single phase item of 2400watts and I am worried if I add that 2400watts to one of the phases it would I overload that phase. 

  • Author

Thinking, as you did getting the amps per phase or leg I can then multiply that with 230V to get the watts per phase. 

I was not sure if it would multiply by 400v or 230v but you correct in that each phase is the potential of 230v.

 

 

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