Reg:KWH Calculation

CT RATIO 1600/5A = 320 multiplier. Read the KWH's from the meter and multiply by 320 for the total. EG meter reading = 1000 kwh x 320 = 320000 kwh's

I assume you have no PT's.

This is not always true, there are other factors needs to be considered for getting the correct multiplying factor.

See this thread for the details about the energy meter Multiplying Factor:

http://cr4.globalspec.com/thread/36700/M-F-in-Electricity-bill

- MS

P=VIcosfi

U current And voltage of supply and take p.F 0.8 ..........u ca easily find power with o

NORMALLY the energymeter is rated for a specific CT Ratio: that is, there will be a recommended CT ratio for it, or, if it is programmable, you set it for a particular CT ratio. THEN the displayed value of kWh is the acctual consumption either for a period (if the meter is displaying the cumulative consumption) or the Instanteneous consumption if displaying such. If it is a digital meter, ther will be a p?button to set the display for either. You don't need to ca;lculate or multiply anything UNLESS the CT used is different from the required CT ration for the meter(setting) in use. then it is a matter of converting the values using the old rule of 3 in math...