Hello Robert
Thanks,
I have follow your sugestion, using ZMPT101B transformer and acs712 30A
But for load 60w incandescent lamp, i only get 0,9
and for Phillips led lamp 13w, i only get 0,6
I have Pzem-004T v3.0 with PZCT 100A/100mA with ESP01S running, and compared to Pzem reading, for 60w incandescent lamp i got 1,0
And for the Led Lamp, i got 0,5
When i change PHASECAL from 1.7 to 2.0 to -3 but i got the same pF reading when i change the value of PHASECAL
Then, i try to use the PZEM CT Transformer, because i saw EmonTX v4 using ZMPT101B and CT Transformer
But it cannot read the pF corrctly
This when no Load
Vrms: 233.64 V
Irms: 0.3506 A
real Power: -4.4634 W
apparent Power: 81.9073 W
Power Factor: -0.05
This When 13w Led Lamp is turn on
Vrms : 238.13 V
Irms: 0.3013 A
real Poweri: 8.2700 W
apparent Power:: 71.7560 W
Power Factor: 0.12
Vrms : 238.05 V
Irms: 0.2852 A
real Power: 12.5708 W
apparent Power: 67.8972 W
Power Factor: 0.19
I have read this AVR-DB: emonTx V4, new hardware in progress
So why in EmonTX v4 it could use ZMPT101B and CT Transformer, is there something wrong with my setup?
I use STM32F103 C6T6 and Arduino 1.8.12 and RogerClark Core
Best Regrads,
Teguh