Power utility Meter

[therealabdo]

Dear Engineers;

I have attached a Power Meter, Digital Power Meter. I have installed it according to the diagram which came with it.I used transformers 300/5
After installing I realized it was counting wrong..I am consuming about 10Kwh (for example) it counts only 6 Kwh.
How can I measure if this meter works fine?
From where do I have to start!!!

[admin]

First : you should programme the digital meter for it's CT ratio to show correct power consumption .

Second  : CT Polarity should be same on meter trminal

Third : CT Shoudl be measuring Class ie. CL-0.5 or CL1.0

Four : Phase Sequence in right order ie. R Y b for Potential & Current  as Load side to meter terminal must be in same order

[admin]

The CT ratio (300/5) you are using is too big for your actual power consumption.

[Author]

Posts