Electric meter calculate the amount of energy used by revolving dial that turns according to energy consumption. it calculate amount of energy used Kilowatt per hour
meters run by continuously measuring voltage and current to give energy use per hour
For residential purpose its directly connected from source to customer directly from in-line.
For commercial purpose where more than 200 Ampere current is made used they should use current transformer
Electric meter specification
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| electric meter |
meter reading for single phase 2 wire class 1
current rating for 5-30 Amps
energy used in KW h and demand in KW
standard reference voltage : 240 V
standard frequency :50 Hz
How to check meter reading
meter board calculate energy used per hour =kilowatt/hour
1 kilowatt hour =1000 watt hours.
if we use 50 W bulb for 10 hours energy used is 50 Watts x 10 = 500 Watts(0.5 KW/h)
How to calculate electricity bill from Electric meter
Dial rotating is directly proportional to amount of energy used.number displayed is number of dial is rotated.your meter reading will never reset to zero.
The number displayed represents the kilowatt-hours that has been used since the meter installed. so number will grow every month.
Current meter reading - meter reading last month report = total kWh used
Total kWh charge per kWh = Total energy charge
Total energy charge + Fixed monthly fees = Final bill.
How does Electric meter work:
Electric meter has 4 system: Driving system, Moving system, Braking system, Integration system.
The driving system has 2 electromagnets ,upper one is shut electromagnet and lower one is series electromagnet. current is flowing through the wires wounded on electromagnet which produces eddy current.
moving system has disc which will be rotating by eddy current produced by shut and series electromagnet.
braking system used to break the aluminium disc rotation.
Integration method used to record how many times disc rotated means how many kilowatt is used will be recorded and we get the bill.
