I am getting the register values need to know how to convert/calculate them into wH.
Voltage Ok = value * .00008468; 120volt
Current OK = value * .00001266; 2amp
PF getting reading ok .45
HZ getting reading and OK 60hz
Active and reactive powers getting reading but don't know how to convert to actual values
Active Value after hour 198240
Reactive after hour 379020
Can you tell me what you voltage divider is for the voltage channel?
What is the ct turns ratio and burden you are using?
verify your register setting on pg4 of an1152
These are your setting above.
I have put into line accumulation mode at 5 sec or value 600
Active power value 272
Reactive Power value 517
So in AN1152 page 6 Establishing LSB section what is the cos(60) add into the equation for
If I dthis equation i get different LSB values for active and reactive is this normal?
my actual reading form desktop meter are
angle = cos-1(.454) = 62.9939deg
cos 60 is the pf used for calibration cos 60 pf 0.5
you can use any pf you want to calibrate we used .5 or cos (60)
V*I*PF = active Power
your active power is 118*2.3*.454 = 123.2156 watts
Active watthr Value after one hour 198240 = 123.2156 watt/hr if this is 1hr accumulation
(123.2156 * 3600)/(198240 *3600) = WATT/hr lsb
You enter your power and accumulation time in the equation to get your answer.
your reactive power is 118*2.3*.891 = 241.8174 watts
Reactive after hour 379020 = 241.8174watt / 1 hr
(241.8174 * 3600)/(379020 *3600) = VAR/hr lsb
Calibration is only as good as the signals you send in. Using an Accrurate source or a reference meter is always best.