Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. Electronic energy meters are accurate, precise and reliable type of measuring instruments when compared to electromechanical induction type meters. Single phase induction type energy meter is also popularly known as watthour meter. The frequency meter consists one inductive and one resistive coil. This is the basic principle of working of an induction type meters. Phasor diagram of single phase induction type energy meter 6. Induction meter, finding standard reading electrical. The perpendicular magnetic field set up in the coils because of the current. Induction meter includes types such as induction voltmeters, induction ammeters and induction watthour meters.
It consumes a small amount of power, typically around 2 watts. Mechanism of rotation of an aluminium disc which is made to rotate at a speed proportional to the power. Explain basic principle and development of torque expressions for energy meter. The basic principle of induction type energy meter is electromagnetic induction. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Aug 02, 2017 electromechanical induction type energy meter. When the frequency of the signal varies from standard frequency, the current distribution across the coils becomes changes. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as lights, fans, refrigerator, and other home appliances. Free download induction motor seminar ppt, pdf report. This article is about watthour meter circuit and its working principles. Pdf automatic energy meter reading using smart energy meter.
In this project we make a smart electricity energy meter using arduino and esp8266 wifi module which can not only sends you a smsemail of your electricity bill but also you can monitor the energy uses anytime and from anywhere in the world. An induction motor can be defined as the ac electric motor device in which a power source fed by the alternating current with the help of a primary winding. Single phase induction meters are a popular type of meters, because of its wide application as energy meter or watthour meter. Pdf study of active electric energy meters behavior of induction. Hence it is the working of induction type energy meter, adjustment of induction type energy meter. There are several types of energy meters single phase induction type energy meter are very commonly used to measure electrical energy consumed in domestic and commercial installation. This alternator type of device is the same one that is used in vehicles to produce a consistent stream of energy. Use of instrument transformers for extension of instrument range. Mar 18, 2017 single phase induction meters are very popular for domestic and industrial use because of its wide application as energy meter. Measurement of energy and calibration of single phase energy meter with wattmeter. Pdf a prototype design for three phase smart energy meter. Particularly in this article, we are going to study about the working principles of singlephase electromechanical induction type energy meter and also about threephase electronic energy meter from the explanation of two basic energy meters as described below.
Electric utilities use electric meters installed at customers premises for billing purposes. The working principle of the induction type single phase energy meter is that the two fluxes. Induction energy meters, measurement error, obsolescence. The working of single phase induction type energy meters are based on two main fundamentals. May 09, 2016 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 power devive. What are the advantages and disadvantages of usual energy meters.
Apr, 2012 introduction single phase induction meter 3. Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms. A second terminal block between the current transformer and the meter simplifies service work. This then, brings us to determining the definition of induction. Explain the principle and working of induction type energy meter. There are four main parts of the operating mechanism of single phase induction type. Energy meter working principle construction types of energy.
Induction type energy meter ii electrical technology ii unit 3 duration. Single phase induction type energy meters electrical. Aug, 2006 an electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. The circuit diagram of the weston frequency meter is shown in the figure below. The principle behind the working of energy meter is emi, i. Energy meter of electromechanical inductiontype and its working. What is the solution for the drawbacks of commonly used energy meters. What is the solution for the drawbacks of commonly. The weston frequency meter is a moving iron instrument used for measuring the unknown frequency of a signal. It is the popularly known and most common type of age old watt hour meter.
A single phase energy meter is electrical meter used to measure the amount of electrical energy consumed by electrical devices, residences and business the basic working of single phase induction type energy meter is only focused on two mechanisms. 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 electric utilities use electric meters installed at customers premises for billing purposes. It is used everywhere, no matter how big or small consumption it is. Single phase induction type energy meters is very commonly used to. Prepaymentprepaid energy meter introduction and working. Electronic meters need for prepaid energy meter system. 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. You can use this solution even for individual appliances to see how much energy they are consuming. When the wattmeter is connected in the circuit to measure a. 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. Electromechanical induction type energy meter and its working. The simplest such instrument is single phase induction type energy meter. Additionally, transformers are able to send alternating currents from one electric circuit to another by means of electromagnet induction.
The dial of the disk meter shows only kwh usage since the time of energy meter installation. The working group liaised closely with meter manufacturers, and the concept was developed step by step. Mar 28, 2017 the dial of the disk meter shows only kwh usage since the time of energy meter installation. The singlephase motor stator has a laminated iron core with two windings arranged perpendicularly. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. The basic working of single phase induction type energy meter is only focused on two mechanisms.
Induction type watthour meter electrical engineering. In all induction meters we have two fluxes which are produced by two different alternating currents on. Iot based electricity energy meter using esp12 and arduino. Current rating for 3 phase disk type energy meter is normally up to 100 amps. To understand the structure of watthour meter, we must. Construction driving system, moving system, braking syatem, and registering system 4. Jun 08, 2016 thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition. 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. In the syllabus it says energy meter, in the textbook it says induction wattmeter and one online reference by iit, says watthour meterinduction type.
Theory and operation phasor diagram of single phase induction type energy. 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. That part to which are affixed the working parts and adjustments. This article is only focused about its constructional features and its working. Induction motor seminar ppt, pdf report study mafia. Working is based on the revolution or u can say rotation of the al. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. An electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. The energy is the total power consumed and utilised by the load at a particular interval of time. Previously we have built a energy meter circuit which sends you sms about the bill using gsm module. Now there are two types of induction meters and they are written as follows. The construction of the single phase energy meter is shown in the figure below. Aug 10, 2010 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.
Induction type wattmeter engineering notes induction type wattmeter. Electrodynamometer wattmeter creeping in energy meter working principle of a transformer voltohmmilliammeter vom. Electromagnetic induction type energy meters, electronic energy meters, smart energy meter. When used in electricity retailing, the utilities record the values measured by these meters to generate an invoice for the electricity. One revolution of the disk is an indication of the amount of energy supplied. Ic ade7757 is a lowcost, singlephase solution for electrical energy measurement.
An energy meter which operates by the rotation of the disk of an induction measuring element. Single phase transformer principle and emf equation. Jul, 2016 operating principle of single phase induction type energy meter. Induction type energy meter essentially consists of following. 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.
Induction type energy meter used invariably to measure the energy consumed in any a. If a meter is used in combination with a current transformer. 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. Explain the principle and working of induction type energy. 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. Induction type energy meter ii electrical technology ii unit 3. 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. A prototype design for three phase smart energy meter.
Single phase energy meter all you need to know toppr. Calculate the number of revolutions made by it, when connected to. Electrical energy is measured in kilo watthours kwh by this energy meter. The principle of working and construction of induction type meter is very simple. Electrical energy meters principles and applications. Thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition. It is used in domestic and industrial ac circuit for measuring the power consumption. Single phase energy meter theory pdf download mastercard. Electromechanical induction type energy meter and its. When alternating current flow though two suitably located coils. Single phase induction type energy meter consists of four important. When the supply is given to the weston frequency meter, the current starts flowing into the coil a and b. 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 power devive.
The meter is provided with a field to which entries can be made for this purpose ct or vt factor. The principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in. Single phase induction type energy meter slideshare. Single phase induction motor the singlephase induction machine is the most frequently used motor for refrigerators, washing machines, clocks, drills, compressors, pumps, and so forth. On the meter front you will find information of the amount of energy supplied per revolution or in the case of. Understanding the basic theory of shieldedpole shunt magnet. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. An energy meter which operates by the rotation of the disk of an induction. What is the working principle of energy meter answers. When connected to loads, they consume less power and start measuring instantaneous. The pressure coil has the number of turns which makes it more inductive.
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. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Theory and operation phasor diagram of single phase induction type energy meter. A new concept for residential electricity meters smart. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Energy meter circuit detailed project with source code. Single phase induction type energy meters electrical concepts. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. A simple 3 phase disk type energy meter is present in the diagram below. Working of single phase induction type energy meter. Therefore, this type of meter is also called an integrating meter.
Study the construction and working of single phase energy. Ac energy measurements induction energy meter every household accuracy about 2 % current and voltage. Study of single phase induction type energy meter or watt. Overview of single phase induction type energy meter. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Jul, 2016 the principle of operation of an induction wattmeter is same as that of induction ammeters and voltmeters i.
First of all remember the induction meter is registering the energy supplied. A specification sheet has been compiled, and a pdf file of the german version can be downloaded at. They are typically calibrated in billing units, the most common one being the kilowatt. So, electronic type of threephase energy meter is explained below with its working principle. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. What is an energy meter and what are the basic types of. In future we will be able to install two electronic residential meters in the same space as is used for one inductiontype.