Answer / saravanan

Energy meter calculates power.Power is the product of
voltage and current. In electronic energy meter the current
and voltages are first calculated by using separate
transducers.After that power can be calculated.
Transducers transforms one form of quantity in to another
form of quantity.

Answer / naved hamid

the answer to this question is that electronic meter
possess a microprocessor which is interfaced by a
Programmable Periphral Device which receives its Input from
Two CT's, one is on the phase & the other is on the
neutral,the PPI recieves signals from both CT,s but it
reads whichever the current is greater & a V.T. is
positioned in the casing of Energy meter of which outputs
is fed to PPI so the proceessor reads V from V.T.,I(depends
on Power Factor) from C.T. so their product is seen on the
digital screen of the Meter.

Answer / tamilarasan

Electronic Energy Meter is based on Digital Micro Technology (DMT) and uses no moving parts. So the EEM is known as “Static Energy Meter” In EEM the accurate functioning is controlled by a specially designed IC called ASIC (Application Specified Integrated Circuit). ASIC is constructed only for specific applications using Embedded System Technology. Similar ASIC are now used in Washing Machines, Air Conditioners, Automobiles, Digital Camera etc.

In addition to ASIC, analogue circuits, Voltage transformer, Current transformer etc are also present in EEM to “Sample” current and voltage. The ‘Input Data’ (Voltage) is compared with a programmed “Reference Data’ (Voltage) and finally a ‘Voltage Rate’ will be given to the output. This output is then converted into ‘Digital Data’ by the AD Converters (Analogue- Digital converter) present in the ASIC.

The Digital Data is then converted into an “Average Value”. Average Value / Mean Value is the measuring unit of power. The output of ASIC is available as “Pulses” indicated by the LED (Light Emitting Diode) placed on the front panel of EEM. These pulses are equal to Average Kilo Watt Hour (kWh / unit). Different ASIC with various kWh are used in different makes of EEMs. But usually 800 to 3600 pulses / kWh generating ASIC s are used in EEMs.The output of ASIC is sufficient to drive a Stepper Motor to give display through the rotation of digits embossed wheels. The output pulses are indicated through LED. The ASIC are manufactured by Analogue Device Company. ADE 7757 IC is generally used in many countries to make EEMs. ADE 7555 / 7755 ASIC maintains the international standard CLASS I IEC 687/ 1036.
On the front panel of EEM there will be 4 LED indications
N OK LED ON Phase and Neutral OK
E / L LED OFF Earthing correct
LED ON Earth leakage and current loss
Imp / kWh LED Blinks Impulses per Kilo Watt Hour.
This LED is larger one.

Answer / arsh uzzama

Best Answer

An electric meter or energy meter is
a device that measures the amount of
electrical energy supplied to or
produced by a residence, business or
machine.
The most common type is a kilowatt
hour meter. When used in electricity
retailing, the utilities record the
values measured by these meters to
generate an invoice for the
electricity. They may also record
other variables including the time
when the electricity was used.
Modern electricity meters operate by
continuously measuring the
instantaneous voltage (volts) and
current (amperes) and finding the
product of these to give
instantaneous electrical power
(watts) which is then integrated
against time to give energy used
(joules, kilowatt-hours etc)

Answer / avyakt mishra

energy meter is an electronic device by which we can
measure & read also the data that we have to use .
the main function of the energy meter is to calculate the
power that we use in our daily life . the main
component of energy meter is
1- PCB
2- CT (current transformer)
3- capacitor, inductor, diode, lcd, led, MOV,etc

Answer / moultz99

we get the value of current which is comeback from the load
and multiply with voltage which pass through.

Answer / wikki

Energy is the product of current and voltage(in the case of 3 phase supply power factor must be considered).In the case of electronic energy meter different transducers are used to calculate I,V and p.f later using microprocessor the quantities are multiplied and output is provided using either through LCD or LED.

Answer / arhaan

I want to slow digital energy meter and how to reading
reverse?

Answer / nyipuchay

Energy meter is a electronic devices that measures the
amount of electrical energy consumed by a residence

Answer / shahadat hossain

energy meter is enclosed in a glass case. Within the case
is a revolving disk which in turn rotates a series of
numbers or dials. The disk rotates as electric current
passes through the meter to measure the exact amount of
kilowatts used. The speed varies depending on how much
electricity you are using in your house. The more
electricity you use, the faster the rotation. energy
measured in kwh ( E=Pxt) it works on electro magnitic
principle.

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