Mechanism of rotation of an aluminum disc which is. An induction type energy meter consists of an aluminum disc on a spindle in between two electromagnets. It consumes a small amount of power, typically around 2 watts. This meter is able to perform current, voltage and. In all induction meters, we have two fluxes which are produced by two different alternating currents on a metallic disc. Analog luxmeters display values on a dial usually with a needle or pointer whereas digital devices display values as numbers letters. Study of single phase induction type energy meter or watt. Induction energy meters, measurement error, obsolescence. Arrangement of counting and displaying the amount of energy consumed. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. Hence it is the working of induction type energy meter, adjustment of induction type energy meter. Single phase energy meter theory pdf download mastercard.
Induction type measuring instrument energy meter slideshare. It is used in domestic and industrial ac circuit for measuring the power consumption. Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. What is the working principle of energy meter answers. Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms. We do not provide any control spring and pointer in an energy meter. This will be converted into corresponding measurements in the display section.
The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. A second terminal block between the current transformer and the meter simplifies service work. The principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as industrial world. Now let us look at constructional details of electrodynamometer type wattmeter. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. Feb 15, 2014 induction type measuring instrument energy meter 1. The rotation speed of the disc is proportional to the power, and this power is integrated by the use of gear trains and counter mechanism. The principle of operation of an induction wattmeter is same as that of induction ammeters and voltmeters i. The magnetic field due to current coil is in phase with line current. It is often incased in glass and has a disk that rotates that. Single phase induction type energy meter working explained including constructional details. Single phase induction type energy meters is very commonly used to. Overview of single phase induction type energy meter.
Energy meters are the basic part to measure the power consumption. In particular, conventional current flows into the positive terminal for an upscale meter deflection as shown in above figure. The principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as the industrial world. Therefore, this type of meter is also called anintegrating meter.
The working of single phase induction type energy meters are based on two main fundamentals. Study of active electric energy meters behavior of induction and electronic types. Working of single phase induction type energy meter. The number of revolutions is thus proportional to the energy usage.
Therefore, this type of meter is also called an integrating meter. Due to alternating fluxes there is an induced emf, the emf produced at one. It is a wellknown and most common type of ageold energy meter. Single phase transformer principle and emf equation. Single phase induction meters are a popular type of meters, because of its wide application as energy meter or watthour meter. The basic principle of induction type energy meter is electromagnetic induction. Electric utilities use electric meters installed at customers premises for billing purposes. Pdf study of active electric energy meters behavior of induction. Meanwhile, the problem of the distorted current waveform from loads need to be considered. The electromechanical induction meter operates by counting the revolutions of a metallic disc which is made to rotate at a speed proportional to the power.
Single phase induction type energy meter construction, working principle,operation,creeping,torque equation the measurement of energy is the same process as measurement of power except that the instrument not merely indicates the power or rate of supply of energy but must take into account also the length of time for which the rate of energy is continued. Electronic meters need for prepaid energy meter system. The aim of this project is to design a sample meter can accurately display real voltage. When the energy meter is connected in the circuit, the current coil carries the load current and the pressure coil carries the current proportional to the supply voltage.
The energy meter has the aluminium disc whose rotation determines the. Ammeter definition and working principle electrical. Single phase induction type energy meter construction, working principle,operation,creeping,torque equation the measurement of energy is the same process as measurement of power except that the instrument not merely indicates the power or rate of supply of energy but must take into account also the length of time for which the rate of energy is. Driving system moving system breaking system registering system 2. The conventional method of electricity billing involves a person from the distribution unit reading the number of units of electricity consumed in the energy meter, conveying this information to the distribution unit and then preparing the bill according to the units consumed for a fixed amount of time. Sep 25, 20 the principle behind the working of energy. Here we discuss the construction and working principle of induction type energy meter. Circuit diagram of single phase electronic energy meter.
Induction cooker to customers which suits their requirements at the market leading prices. Construction and working principle of electrodynamometer type wattmeter. The basic working of single phase induction type energy meter is only focused on two mechanisms. Single phase induction type energy meter is also popularly known as watthour meter. Single phase electromechanical induction energy meter. This article is only focused about its constructional features and its working. A single phase induction type energy meter consists of. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels.
Induction type watt hour meter or energy meter about circuit. Prepaymentprepaid energy meter introduction and working. They are typically calibrated in billing units, the most common one being the kilowatt hour kwh. An energy meter is used to measure the energy consumed in the kilowatt hours. Electrical energy meters principles and applications. A dynamo meter type watt meter is used in various applications where the power or energy transfer has to be measured. The watthour meter works on the induction principle. A 3phase energy meter has same elements as in case of a singlephase energy meter. However, it differs from induction ammeter or voltmeter in so far that separate two coils are used to produced the rotating flux in place of one coil with phase split arrangement. It is used everywhere, no matter how big or small consumption it is. Pdf a detailed study is presented on electric energy meters and its diverse technologies. Induction type wattmeter, watthour meter, and dynamometer type power.
The torque of both the elements is added mechanically, and the total rotation of the shaft is proportional to the three phase energy consumption. Energy meter circuit diagram by a transmitter with digital meter and how can we use a single energy meter. A magnetic field is applied to the metering tube, which results in a potential difference proportional to the flow velocity perpendicular to the flux lines. When the energy meter is connected in the circuit, the current coil carries the load current and the pressure coil carries the current proportional to.
It is the popularly known and most common type of age old watt hour meter. The basic principle of induction type energy meter is electromagnetic. The great invention of the nineteenth century was the method of invention. The megger insulation tester is an instrument used for measuring high resistances of the order of mega ohms and for testing the insulation resistance megger working principle.
The meter is provided with a field to which entries can be made for this purpose ct or vt factor. Single phase energy meter working of single phase induction. The electromechanical induction meter operates by counting the revolutions of an aluminium disc which is made to rotate at a speed proportional to the power. As their name suggest, electromechanical energy meters are the combination of mechanical and electrical technology. Measurement of energy and calibration of single phase energy meter with wattmeter. In order to accurately measure the electronic energy used for a electronic energy meter, suitable hardware and software have to be designed. What is the solution for the drawbacks of commonly used energy meters.
Jul 25, 2018 the principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as industrial world. The rotation of metallic disk is operated by two coils. We have used this sensor to make digital ammeter circuit using pic microcontroller and acs712 circuit diagram circuit diagram for iot based energy meter using arduino and nodemcu is given above, connect esp12 as below connect rx of esp12 tx of arduino. The principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in. Aug 02, 2017 electromechanical induction type energy meter. The three phase energy meter has two discs mounted on the common shaft. Mar 29, 2019 this is all about types of energy meter and their working. This maxim from the english mathematician and philosopher alfred north whitehead 18911947 perfectly applies to the history of the electricity meter, perfected through a series of inventions building on achievements and stimulating further development. This is used in each and every house and industry for calculating the energy consumed by them.
Jul 25, 2018 energy meters are the basic part to measure the power consumption. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device. Aug 10, 2010 energy meter works on the same principle as the induction motor. Electrodynamometer type wattmeter construction and working. It comprises a rotating aluminum disc placed on a spindle between two electromagnets. Mar 28, 2017 induction type single phase energy meter. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. Along with this we also provide proper after sales service for the induction cooker within a fixed time period. Induction type energy meter ii electrical technology ii unit 3. Iot based electricity energy meter using esp12 and arduino. Sep, 2011 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. Megger working principle is based on the working principle of moving coil instruments, which states that when a current carrying conductor is placed in a magnetic field, a mechanical force is experienced by it.
These meters are also called as magflow or electromagnetic flow meters. Ammeter definition and working principle electrical academia. The physical principle at work is electromagnetic induction and mathematically defined as. Types of energy meters and their working principles elprocus. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. Jul, 2016 operating principle of single phase induction type energy meter. Single phase electromechanical induction energy meter so, electronic type of three phase energy meter is explained below with its working principle. What are the advantages and disadvantages of usual energy meters. This meter is able to perform current, voltage and power measurements in three phase supply systems. A mechanical disk present inside the meter rotates when the load applied. Mechanism of counting and displaying the amount of energy transferred.
One carries a voltage coil so its flux is proportional to voltage, the second carries a current coil so its flux is proportional to current. An aluminium disc is placed inside a magnetic core with two limbs. When alternating current flow though two suitably located coils produces rotating magnetic field which is cut by the metallic disc suspended near to the coils thus emf induce in the disc which is circulates eddy current in it. Energy meter works on the same principle as the induction motor. When connected to loads, they consume less power and start measuring instantaneous. Electromechanical induction type energy meter and its. Induction meter includes types such as induction voltmeters, induction ammeters and induction watthour meters. In all induction meters we have two fluxes which are produced by two different alternating currents on. The energy is the total power consumed and utilised by the load at a particular interval of time.
Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc. Moreover, the working principle of a watthour meter is more or less similar to that of an induction type wattmeter. If a meter is used in combination with a current transformer. When the energy meter is connected in the circuit to measure electrical energy, the current coil carries the load current whereas the pressure coil carries current proportional to the supply voltage. However, it differs from induction ammeter or voltmeter in so far that separate two coils are used to produced the rotating flux in place of one coil with phase. The physical principle at work is electromagnetic induction and mathematically defined as ekbdv.
The operation of induction type energy meter depends on the passage of alternating current through two suitably located coils producing rotating magnetic field which interacts with a metallic disc suspended near to the coils and cause the disc to rotate. Induction type energy meter used invariably to measure the energy consumed in any a. The principle of working and construction of induction type meter is very. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh. The main alterations are the provision of only one pressure coil upon the. Mar 18, 2017 single phase induction meters are very popular for domestic and industrial use because of its wide application as energy meter.
Please share your comments and suggestions on the comment section given below. Induction type energy meter essentially consists of following. Driving system moving system breaking system registering system. If an ammeter is of dc type, then it has polarity signs on it for ensuring appropriate connection for an upscale indication. Induction type measuring instrument energy meter 1.
Electromechanical energy meters engineer experiences. Jun 30, 2018 working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. Single phase energy meter all you need to know toppr. Handbook on electricity meters asiapacific economic cooperation. Electromechanical induction type energy meter and its working.
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