Hello Solar guru's and enthusiast's alike. I can't seem to figure this out and need someone to try and makes sense out of it for me
I have a Magnum Energy PT-100 solar charge controller. My system is 12 V with 7200WH of Lithium batteries.
Spec's are
MAX PV INPUT 200VDC + battery voltage
PV operating Voltage (Vbat + 8V) to 187 VDC
MAX input current 100 ADC
Nominal Bat Voltage 12, 24, 48
Battery Charger output range 1 to 66 volts
Continuous Charger output Current 100 ADC
Max output power 6600 watts
Peak (and full power) efficiency >99% (98 typical)
Tare loss (nighttime power consumption) <4watts (fan off, dis[play/led off)
So I'm trying to get as much solar on this controller or very close. They have a PV array calculator, after using the calculator I'm under the impression that I can use a max of 1800 watts and still be within the parameters of this controller. Now the part that I'm unsure of .
So if 1800 / 14.4V = 125 Amps which is over the Max output of the controller. But the PV calculator says it's ok with a max output of 98.6 amps,
However if I divide 1650 / 14.4v =114.5 amps which is still over the max output. again the calculator shows it's fine with only 90 amps output.
So following that math I would only be able to use 1440 / 14.4v =100 amps. Again the calculator shows @79 Amps .I know that the panels are not putting out anywhere near 100 amps.
So I guess my question is which math is more correct? I don't want to burn out the controller by overpaneling it too far.
I looked at these panels
300 watt in a 3S/2P configuration
VOC 39.5
IMP 33.0
ISC 9.70
IMP 9.10
Here is a screen grab of the calculator
.
I have a Magnum Energy PT-100 solar charge controller. My system is 12 V with 7200WH of Lithium batteries.
Spec's are
MAX PV INPUT 200VDC + battery voltage
PV operating Voltage (Vbat + 8V) to 187 VDC
MAX input current 100 ADC
Nominal Bat Voltage 12, 24, 48
Battery Charger output range 1 to 66 volts
Continuous Charger output Current 100 ADC
Max output power 6600 watts
Peak (and full power) efficiency >99% (98 typical)
Tare loss (nighttime power consumption) <4watts (fan off, dis[play/led off)
PV Array Calculator for the Magnum Energy PT-100 Charge Controller | Magnum Dimensions
Accurately calculate the number of PT-100 Charge Controllers you need based on your PV array.
www.magnum-dimensions.com
So I'm trying to get as much solar on this controller or very close. They have a PV array calculator, after using the calculator I'm under the impression that I can use a max of 1800 watts and still be within the parameters of this controller. Now the part that I'm unsure of .
So if 1800 / 14.4V = 125 Amps which is over the Max output of the controller. But the PV calculator says it's ok with a max output of 98.6 amps,
However if I divide 1650 / 14.4v =114.5 amps which is still over the max output. again the calculator shows it's fine with only 90 amps output.
So following that math I would only be able to use 1440 / 14.4v =100 amps. Again the calculator shows @79 Amps .I know that the panels are not putting out anywhere near 100 amps.
So I guess my question is which math is more correct? I don't want to burn out the controller by overpaneling it too far.
I looked at these panels
300 watt in a 3S/2P configuration
VOC 39.5
IMP 33.0
ISC 9.70
IMP 9.10
Here is a screen grab of the calculator
.