Dear all,
I am trying to build string monitoring current of solar application. we have 24 string . Bus bar can carry the voltage 1000v,25A. Now i am trying to build current through each string. There are 2 ways of doing it
1) Hall effect based current sensor
2)RShunt based current measurement.
I need help guideline for this project.
technique 1: pass the string through each hall sensor and measure through controller and Displayed via modbus. My sensor cost me around 300RS and price work out to be 7200Rs(Sensors)+(2k-3k) PCB/controller/voltage trasducer/enclosure/etc.
technique 2: If use Rsh basis use of shunt resistor, filtering circuits,sognal conditioning, sampling,controlling ,etc cost work out to be 8000RS.
Now my problem Since we measuring current not frequent basis. We measure current for Say 30min or 1 hour.Is there any way i can bring my cost down.
Only hardware cost is more.How can bring cost down. any other way to bring it down
I am trying to build string monitoring current of solar application. we have 24 string . Bus bar can carry the voltage 1000v,25A. Now i am trying to build current through each string. There are 2 ways of doing it
1) Hall effect based current sensor
2)RShunt based current measurement.
I need help guideline for this project.
technique 1: pass the string through each hall sensor and measure through controller and Displayed via modbus. My sensor cost me around 300RS and price work out to be 7200Rs(Sensors)+(2k-3k) PCB/controller/voltage trasducer/enclosure/etc.
technique 2: If use Rsh basis use of shunt resistor, filtering circuits,sognal conditioning, sampling,controlling ,etc cost work out to be 8000RS.
Now my problem Since we measuring current not frequent basis. We measure current for Say 30min or 1 hour.Is there any way i can bring my cost down.
Only hardware cost is more.How can bring cost down. any other way to bring it down