# How do I determine the value of Active and Reactive wh measurement in ade7816?

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

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

## Top Replies

• I have put into line accumulation mode at 5 sec or value 600

60 hz

118 volt

2.3 amp

.454 PF

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

.1 kw

.22 KVAR

.2kva

• Hi

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

60 hz

118 volt

2.3 amp

.454 PF

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