Hi i'm more towards instrumentation and i need help with this calculation. Kindly please help step by step.
We have 4 flame detectors and 8 gas detectors in this one loop connected in series.
Each gas detector load is :
8.0 watts peak @ 24vdc
Each flame detector load is :
17 watts at 24 Vdc with EOL resistor installed and heater on maximum
Voltage at Unit Control Panel : 24VDC.
Cable length from PLC panel to package : 380m
Cable core size : 21Cx2.5mm2
According to cable spec: Maximum conductor resistance for 20C 2.5mm2 cable is 7.41ohm/km
What is the voltage drop?
Reason for this calculation is this power loop is having lower voltage than expected during commissioning. Hence a voltage drop calculation is recommended to be done .
We have 4 flame detectors and 8 gas detectors in this one loop connected in series.
Each gas detector load is :
8.0 watts peak @ 24vdc
Each flame detector load is :
17 watts at 24 Vdc with EOL resistor installed and heater on maximum
Voltage at Unit Control Panel : 24VDC.
Cable length from PLC panel to package : 380m
Cable core size : 21Cx2.5mm2
According to cable spec: Maximum conductor resistance for 20C 2.5mm2 cable is 7.41ohm/km
What is the voltage drop?
Reason for this calculation is this power loop is having lower voltage than expected during commissioning. Hence a voltage drop calculation is recommended to be done .