Oom Tas

I am also running 2 x 5 kW Sunsynk's in parallel and it all depends on the connected PV input power. Say the max PV for Master = 3 kW and Slave = 5 kW
When an AC load of say 8 kW is drawn, each inverter will supply +- 4 kW. In this case it will show the the master is discharging the battery, whilst the slave will be charging the battery.
The only way for the inverters to balance the load is to balance it out on the 48 V DC side, thus showing charge/discharge. Switching off the PV input on the master the discharge for both inverters will be the same.
The master inverter is controlling the whole operation. Comms cable and CT only connected to the Master inverter.

Notice this story is now nearly 2 years in the making, therefore I would like to share my non scientific test result. Lots of claims made by Xtend Elements, and they even post flawed test results.
Test rig consist of a 50L Kwikot geyser, connected to a 5.5 kW Kwikot Heat Pump. Using the control circuit of the heat pump to display average preheat and post heat temperature. Run the circulating water pump permanently to get a decent average temperature. Temp sensor situated in the middle of the tank.
Change over switch to select compressor or element under test, with a Power Meter to monitor the real consumption:
Test 1 on spiral 2 kW element: Start at 22 deg C , Stop at 50 deg C, Time taken 63 minutes, Total Power used 2.05 kWh
Test 2 on 1.5 kW PTC element: Start at 22 deg C, Stop at 50 deg C, Time taken 74 minutes, Total power used 2.11 kWh
As can be seen the results are pretty much the same. The main reason for the slight difference in power consumption most likely the longer run time thus slightly more energy lost through circulation pump and plumbing.
Test 3 on 5.5 kW Heat Pump: Start at 18 deg C, Stop at 50 deg C, Time taken 28 minutes, Total Power used 0.751 kWh.
I was foolish enough to test all the different type of elements and the results are all the same. The so called bigger surface area of the PTC element makes no difference. The Spiral element surface are in fact greater than the PTC.

Notice this story is now nearly 2 years in the making, therefore I would like to share my non scientific test result. Lots of claims made by Xtend Elements, and they even post flawed test results.
Test rig consist of a 50L Kwikot geyser, connected to a 5.5 kW Kwikot Heat Pump. Using the control circuit of the heat pump to display average preheat and post heat temperature. Run the circulating water pump permanently to get a decent average temperature. Temp sensor situated in the middle of the tank.
Change over switch to select compressor or element under test, with a Power Meter to monitor the real consumption:
Test 1 on spiral 2 kW element: Start at 22 deg C , Stop at 50 deg C, Time taken 63 minutes, Total Power used 2.05 kWh
Test 2 on 1.5 kW PTC element: Start at 22 deg C, Stop at 50 deg C, Time taken 74 minutes, Total power used 2.11 kWh
As can be seen the results are pretty much the same. The main reason for the slight difference in power consumption most likely the longer run time thus slightly more energy lost through circulation pump and plumbing.
Test 3 on 5.5 kW Heat Pump: Start at 18 deg C, Stop at 50 deg C, Time taken 28 minutes, Total Power used 0.751 kWh.
I was foolish enough to test all the different type of elements and the results are all the same. The so called bigger surface area of the PTC element makes no difference. The Spiral element surface are in fact greater than the PTC.

Notice this story is now nearly 2 years in the making, therefore I would like to share my non scientific test result. Lots of claims made by Xtend Elements, and they even post flawed test results.
Test rig consist of a 50L Kwikot geyser, connected to a 5.5 kW Kwikot Heat Pump. Using the control circuit of the heat pump to display average preheat and post heat temperature. Run the circulating water pump permanently to get a decent average temperature. Temp sensor situated in the middle of the tank.
Change over switch to select compressor or element under test, with a Power Meter to monitor the real consumption:
Test 1 on spiral 2 kW element: Start at 22 deg C , Stop at 50 deg C, Time taken 63 minutes, Total Power used 2.05 kWh
Test 2 on 1.5 kW PTC element: Start at 22 deg C, Stop at 50 deg C, Time taken 74 minutes, Total power used 2.11 kWh
As can be seen the results are pretty much the same. The main reason for the slight difference in power consumption most likely the longer run time thus slightly more energy lost through circulation pump and plumbing.
Test 3 on 5.5 kW Heat Pump: Start at 18 deg C, Stop at 50 deg C, Time taken 28 minutes, Total Power used 0.751 kWh.
I was foolish enough to test all the different type of elements and the results are all the same. The so called bigger surface area of the PTC element makes no difference. The Spiral element surface are in fact greater than the PTC.

Uitstekend. Ek het selwers na die manual gekyk en dit is nie 'straight forward' nie.   
Fully aggree with GreenFields

Hi Jan
Looks like the added batteries are not in communication with the inverter (see attached pics of mine with 1, 2 and 3 batteries in service)
It update the displayed value automatically.  Most likely dip switch settings issues.

Hi Jan
Looks like the added batteries are not in communication with the inverter (see attached pics of mine with 1, 2 and 3 batteries in service)
It update the displayed value automatically.  Most likely dip switch settings issues.

Hi razzor13bt
The first picture of the 63A DC circuit breaker is correct, if the source is connected to the top of the breaker the right hand side is the positive with the load positive also on the right hand side bottom of the circuit breaker.
If the source is connected at the bottom of the circuit breaker the positive must be connected to the left hand side pole and the top of the circuit breaker will  be the positive of the load. It is done like that in order for the magnetic blowouts to quence the arc. (Fault current will flow clockwise through circuit breaker in both cases)
 

Hi razzor13bt
The first picture of the 63A DC circuit breaker is correct, if the source is connected to the top of the breaker the right hand side is the positive with the load positive also on the right hand side bottom of the circuit breaker.
If the source is connected at the bottom of the circuit breaker the positive must be connected to the left hand side pole and the top of the circuit breaker will  be the positive of the load. It is done like that in order for the magnetic blowouts to quence the arc. (Fault current will flow clockwise through circuit breaker in both cases)
 

Hi razzor13bt
The first picture of the 63A DC circuit breaker is correct, if the source is connected to the top of the breaker the right hand side is the positive with the load positive also on the right hand side bottom of the circuit breaker.
If the source is connected at the bottom of the circuit breaker the positive must be connected to the left hand side pole and the top of the circuit breaker will  be the positive of the load. It is done like that in order for the magnetic blowouts to quence the arc. (Fault current will flow clockwise through circuit breaker in both cases)
 

Hi AC-DC,
It simply means phase rotation, clockwise 0/120/240 and 0/240/120 the opposite direction.