Hi all.

Hope I'm posting in the correct spot, I've have 3phase power and for 3 years I've had voltage issues. The municipal cannot assist as it's border line of the10% tolerance.

L1 225, L2 210, L3 222

I have a few ups and the constantly using more power to maintain 230v.

The low voltage also creates isues to my 3 phase equequipment.

I was thinking of removing the grid supply and connecting it to the gen port and let it charge the batteries.

My question is

Will the gen port dictate the voltage or will the inverter maintain 230v like it does when their is no grid supply?

Im usung , Deye 12kw 3p inverters, hubble am2 batteries

31 minutes ago, Deeos said:

Hi all.

Hope I'm posting in the correct spot, I've have 3phase power and for 3 years I've had voltage issues. The municipal cannot assist as it's border line of the10% tolerance.

L1 225, L2 210, L3 222

I have a few ups and the constantly using more power to maintain 230v.

The low voltage also creates isues to my 3 phase equequipment.

I was thinking of removing the grid supply and connecting it to the gen port and let it charge the batteries.

My question is

Will the gen port dictate the voltage or will the inverter maintain 230v like it does when their is no grid supply?

Im usung , Deye 12kw 3p inverters, hubble am2 batteries

Depending on what equipment are so sensitive the L1 225, L2 210, L3 222 should not damage equipment.

The gen port will also just feed the gen voltage and the inverter will not regulate it. The only reason why you get 230V when the grid is off is then the AC is created from batteries by the inverter.

Thanks the 3phase equipment control circuits will not allow it to run due to voltage issues

Mornings and evenings is when the voltage issues come up.

Then it's also more current draw due to the lower voltage

2 minutes ago, Deeos said:

Thanks the 3phase equipment control circuits will not allow it to run due to voltage issues

Mornings and evenings is when the voltage issues come up.

Then it's also more current draw due to the lower voltage

Without knowing what control equipment will not cause it to run is strange. Normally 3 ph units switching is via contactors and they are happy with a pick up voltage of 80% of rated voltage and the drop out can be as low as 30-60% for units around the 7.5 kW contactor size. Yes there will be an increased current to perform the same work done.

Due you employ any adjustable phase failure or minimum voltage to still operate units?

The pc boards on the equipment have voltage monitoring and that's what is preventing it from running.

Effectively I've added motorized breakers to the grid supply with a timer for the mornings and evenings to resolve this.

I was looking for a smart voltage monitor to send a signal to the breaker when needed or to get a voltage, phase protection device instead of the timer