- Calculation of energy meter's power
Purpose
- To get intended calculation consumed power from energy meter based on pulse from meter energy 3200 pulse for 1 kWh which using tnb calculation (for single phase's tariff)
Description
Calculation
of Pulses and Units:
Before
proceeding for the calculations, firstly keep in mind the pulse rate of energy meter.
There are two pulse rates of energy meter first is 1600 imp/kwh and second is
3200 imp/kwh. So here I am using 3200 imp/kwh pulse rate energy meter.
So
first I need to calculate the Pulses for 100watt, means how many times Pulse
LED will blink in a minute, for the load of 100 watts.
Pulse=
(Pluse_rate*watt*time)/ (1000*3600)
So
pulses for 100 watt bulb in 60 seconds, with energy meter of 3200 imp/kwh pulse
rate can be calculated as below:
Pulses=3200*100*60/1000*3600
Pulses
= ~5.33 pulse per minute
Now
I need to calculate Power factor of a single pulse, means how much electricity
will be consumed in one pulse:
PF=
watt/(hour*Pulse)
PF=100/60*5.33
PF=0.3125
watt in a single pulse
Units=
PF*Total pulse/1000
Total
pulses in an hour is around 5.33*60=320
Units
= 0.3125*320/100
Units
= 1 per hour
If
a 100 watt bulb is lighting for a day then it will consume
Units
=1*0.3125
Units
= 0.3125 Units
And
suppose unit rate is at the region is rm0.0218 per unit then
So
have to pay for 0.3125 Units for:
Price=
0.3125*0.0218 = RM0.0068125
This
is simplified equation :-
watt
= (i*0.3125);
unit
= watt/100;
price = unit*0.0218