EG4 6500es mystery grid power usage

[Ietech]

I have 3 EG4 6500 inverters hooked up to 6 EG4 Lifepower 4 48 volt batteries. I also have grid power hooked up to the inverters. My question is why would I use 2kw of grid power if my inverters never switches to grid power. This is puzzling me

 

[Ietech]

This will happen over a 24 hr period

 

[Ietech]

I have also noticed that one inverter seems to not hold a steady output voltage. Seems to range from 110vac up to 127vac. This is seen on the display readout on the inverter. Is this normal? I have double checked all connections to make sure they are all solid and not have a high resistance connection

 

[Doggydogworld]

2 kW constant? Or 2 kWh over a 24 hour period?

 

[SignatureSolarJames]

This is reactive power
@BenFromSignatureSolar

 

[BenFromSignatureSolar]

I have 3 EG4 6500 inverters hooked up to 6 EG4 Lifepower 4 48 volt batteries. I also have grid power hooked up to the inverters. My question is why would I use 2kw of grid power if my inverters never switches to grid power. This is puzzling me

If you will DM me your email address and phone number we will get in touch and help you out here.

 

[Ietech]

2 kW constant? Or 2 kWh over a 24 hour period?

2kw over a 24hr period. Most of the time.

 

[Ietech]

This is reactive power
@BenFromSignatureSolar

Then why is it metering it as useage for me?

 

[Ietech]

Then why is it metering it as useage for me?

There are some days it shows no usage from grid at all

 

[Quattrohead]

My SP6548 (same as EG4 6500 to all intents) are not connected to grid input at all and so consume that power from the batteries at night and from solar during the day, constant 30-45w each.
But both do have a rock steady 120v output.

 

[Ietech]

My SP6548 (same as EG4 6500 to all intents) are not connected to grid input at all and so consume that power from the batteries at night and from solar during the day, constant 30-45w each.
But both do have a rock steady 120v output.

I was just comparing it to my other two. It is the only one fluctuating that much. The others will jump from 119-120 and that seems normal. This one seems to have a bigger span and was wondering if it was a sign of trouble

 

[Texican]

I have 2 mpp lv6548, what I noticed is that when the PV is not producing at night, I have a 40w draw on each inverter from the grid not from the battery
I suspect that is because with SBU, when no solar is avbl, the grid is the standby source as is somehow using 40w each inverter

no draw from grid at all when solar is avbl

 

[Ietech]

I have one of my three EG4 6500es inverters that has the output voltage jumping around. When I say jumping around I’m talking about jumping from 105 all the way up to 130 constantly like it can’t find its set output. The inverters are not heavily loaded they very seldom get to 50 %loaded. Most of the time they are 10-20% loaded. The other 2 inverters in the system are steady on the output. Only change from 119-120 and not very often. Was wondering if it is a problem with the inverter. I have checked all the connections and did not find any problems

 

[Texican]

I have one of my three EG4 6500es inverters that has the output voltage jumping around. When I say jumping around I’m talking about jumping from 105 all the way up to 130 constantly like it can’t find its set output. The inverters are not heavily loaded they very seldom get to 50 %loaded. Most of the time they are 10-20% loaded. The other 2 inverters in the system are steady on the output. Only change from 119-120 and not very often. Was wondering if it is a problem with the inverter. I have checked all the connections and did not find any problems

Are you running 3 phase power ? or running split phase but with 2 inverters on 1 phase and 1 inverter on the other ?

 

[Ietech]

Split phase with two inverters on one phase and one on the other. I have a very balanced load on my system.

 

[Texican]

I have mpp lv6548, almost identical to yours, and that config is not allowed. it needs the same number of inverters on each phase,
does your manual show that configuration ?
lv6548 only uses 3 for 3 phase power

 

[Texican]

I looked in your manual from signature solar and its same as my lv6548, no example of hooking up 2 inverters on 1 phase and 1 on the other phase, for split phase power.

if your loads are balanced anyway, why are you doing this ?. I think you need either 2 or 4 inverters

 

[Ietech]

Signature solar showed me how to set this up. I am going to get a fourth inverter to complete the install. Just did not want a $1500 battery charger and asked if there was a way to make it do a little work while I was waiting for the fourth. It is the same as setting up 4 settings wise

 

[Ietech]

It doesn’t affect the output voltage of the inverter that is fluctuating a lot

 

[Quattrohead]

I looked in your manual from signature solar and its same as my lv6548, no example of hooking up 2 inverters on 1 phase and 1 on the other phase, for split phase power.

if your loads are balanced anyway, why are you doing this ?. I think you need either 2 or 4 inverters

I don't know what manual you are looking at, page 20-22 show exactly these configurations.
RTFM