I am start testing with single phase connection on board with induction motor. I am getting voltage reading but not get current reading on phase. I am surprised that I can get neutral phase current reading but not phase current reading.
I am using the following parameter setting
Vrms = 240 volt (Supply Voltage)
Irms = 4.15 amp (Load Current - Normal (without load) Induction motor current)
N = 1500 (CT turn ratio)
IFS = 6 amp
Rb = 150 ohm
I am getting following reading
BIRMS:618388CNT, 0.058046V , 0.580457A
NIRMS:4430976CNT , 0.415918V , 4.159184A
From BIRMS and NIRMS CNT reading, I calculated voltage developed between Ibp - Ibn and Inp - Inn((CNT*0.5)/5326737) as 0.058046V and 0.415918V. To cross verify this I measured the voltage develop on board on the same pin and I got the same value as i have calculated from count reading.
So my calculation looks correct to me. but why I am getting different count reading even if the current flowing is the same on both channel??