Working of single phase induction type energy meter. Single phase induction type energy meter consists of four important systems which are written as follows. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc. Single phase watthour meters comply with the technical requirements provided by iec 6205311 and en 504702 standards. The meter is designed to offer reliable energy measurement in single phase circuit and is highly suitable for metering and remote communication purposes. Mcp3909 and pic18fj90 single phase energy meter reference design. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Jul 25, 2018 energy meters are the basic part to measure the power consumption. An induction type single phase energy meter, as show in fig has.
The basic working of single phase induction type energy meter is only focused on two mechanisms. Presentations ppt, key, pdf logging in or signing up. Operating principle of single phase induction type energy meter. The energy is the total power consumed and utilised by the load at a particular interval of time.
Single phase electronic energy meter,1 phase electronic. This design implements a highaccuracy singlephase embedded energy measurement application using msp430afe253. It comprises a rotating aluminum disc placed on a spindle between two electromagnets. Pdf this paper presents a single phase electrical energy meter based on a. The power needs of the majority of the shops, houses and small houses can be easily met through a single phase system. Induction type watt hour meter or energy meter about circuit. Single phase induction motors the single phase induction motor comes with the different starting arrangements. Calibration and testing of singlephase energy meter. Due to alternating fluxes there is an induced emf, the emf produced at one. Dds102j3 single phase electronic energy meter register display.
This evm has builtin support for measuring ac voltage, current, active power, reactive power, apparent power, frequency, power factor, dc. Single phase induction motor the single phase induction machine is the most frequently used motor for refrigerators, washing machines, clocks, drills, compressors, pumps, and so forth. The red wire shows the live or line or phase and the blake shows the neutral wire. The design is intended to be low cost and is transformerless. Give the connections as per the circuit diagram above. Energy meter circuit detailed project with source code. C to the pressure coil circuit by means of phase shifting transformer. Dds102j1 single phase electronic energy meter register display ddsy102k3 single phase electronic type prepayment energy meter ddsy102k7 single phase electronic type microwireless energy meter. Procedure for calibration and testing of single phase energy meter. Induction motor seminar ppt, pdf report study mafia. Single phase energy meter theory pdf download mastercard. Single phase induction motor double revolving field theory the threephase induction motor starting torque inversely depends on the slip this implies that a small positive slip 0. Singlephase electric meter with isolated energy measurement ti designs design features ti designs provide the foundation that you need simplified meter calibration by using usb including methodology, testing and design files to connection quickly evaluate and customize the system.
Study the construction and working of single phase energy. Apr, 2012 introduction single phase induction meter 3. The commercial unit of electrical energy is kilowatt hour kwh. The three phase energy meter is used for measuring the large power consumption. The most common type of electricity meter is the electromechanical watthour meter. A single phase 45 amp 1 module din rail mounted meter. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter.
Watthour meters for the measurement of alternat ing current electrical energy in singlephase cir cuits. There are four main parts of the operating mechanism of single phase induction type. The individual pulses are then summated through the use of an electromechanical meter, and are made available at a pulse output as well. In a single phase meter measurement, the power is being measured by using the instantaneous power which is pt vt it. A single phase meter is used in alternating current systems. Pic18f87j72 singlephase energy meter calibration users guide 2011 microchip technology inc. Single phase energy meter theory pdf download mastercard downlood triber vodafon author. Note down the reading of two meters in a given period of time, say 2 minutes. Moreover, the working principle of a watthour meter is more or less similar to that of an induction type wattmeter. Singlephase electric meter with isolated energy measurement.
Teridian s patented single converter technology with a 22bit deltasigma adc, 3 analog inputs, digital temperature compensation, precision voltage reference and 32bit computation engine ce supports a wide range of singlephase metering applications with very few low cost external. The basic principle of induction type energy meter is electromagnetic induction. What are the advantages and disadvantages of usual energy meters. Single phase digital energy meter all about circuits. 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. But these are now being gradually replaced by electronic digital energy meters. Meter case according to din or bs made of high quality plastics. The construction of the single phase energy meter is shown in the figure below. However the meter should withstand the maximum system voltage. Singlephase smart distribution test and measurement instruments.
This design implements a highaccuracy single phase embedded energy measurement application using msp430afe253. Single phase energy meter working of single phase induction. Phasor diagram of single phase induction type energy meter. 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. Single phase watthour meters of cmax type are induction meters meant for electric energy measuring on single phase 2 wire or 3 wire networks. Pic18f87j72 singlephase energy meter calibration users guide. Therefore, this type of meter is also called an integrating meter. And also for reading the current ct is used which is inductive and current will lag. This voltage coil has many turns and is arranged to be as highly inductive as possible. Jul, 2016 operating principle of single phase induction type energy meter. Mechanism of counting and displaying the amount of energy transferred. 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. Use of instrument transformers for extension of instrument range.
In other words, the voltage coil produces a high ratio of inductance to. This article is really good kurrey consultancy services november 25, 2018 at 2. Ti designs isolated communications between metrology afe. The meter complies with national and international metering standards. These graphics below shows the above idea in a very simple way. Phasor diagram of single phase induction type energy meter 6. Driving system consists of two electromagnets on which pressure coil and current coils are wounded, as shown above in the diagram. Single phase induction type energy meter slideshare. Ac energy measurements induction energy meter every household accuracy about 2 % current and voltage coil ac current coil eddy currents disk force to disk variable powers cause. It is used in domestic and industrial ac circuit for measuring the power. The measurement of energy is accomplished by means of a voltagefrequency converter connected downstream from the power meter.
Single phase induction type energy meters electrical. Energy meter testing equipment single phase high precision. They are typically calibrated in billing units, the most common one being the kilowatt. The electricity meters in our single phase meter range are all mid approved meters. In addition to this, single phase motors are reliable, cheap in cost, simple in construction and easy to repair. The complete set up consists of two energy meters, wattmeter, voltmeter, ammeter, variac. The simplest such instrument is single phase induction type energy meter. Therefore, this type of meter is also called anintegrating meter. Constructionally an induction type single phase watt hour meter has many similarities to an induction type wattmeter. Single phase energy meter all you need to know toppr.
Single phase electromechanical induction energy meter. A single mcp3909 acts as the analog front end measurement circuitry. Pdf study of active electric energy meters behavior of induction. Singlephase energy meter ic data sheet august 2007. Singlephase watthour meters of cmax type are induction meters meant for electric energy measuring on singlephase 2 wire or 3 wire networks. Electrical energy meters principles and applications. It comes with suitable display with a range of communication options for local and remote monitoring.
Manufacturer of energy meter testing equipment single phase high precision reference meter, three phase energy meter field calibrator, ratio and polarity test set and single phase portable energy meter testing equipment offered by akshyan power solutions private limited, delhi. I am currently studying msp430afe2xx from texas instrument, any pointers for this ic. Construction driving system, moving system, braking syatem, and registering system 4. It is used everywhere, no matter how big or small consumption it is. Jan 15, 2018 in this video, i try to explain the concept of single phase electrical meter or single phase energy meter. A polyphase system is a means of distributing alternatingcurrent electrical power where the power transfer is constant during each electrical cycle. Below are the the connections diagrams for installation of a singlephase 3phase, 4 wire kwh meter digital or analog energy meter from the supply to the main distribution board in home. 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 and monitoring purposes.
Single phase induction type energy meters electrical concepts. A singlephase meter is used in alternating current systems. Study of single phase induction type energy meter or watt. Mechanism of rotation of an aluminium disc which is made to rotate at a speed proportional to the power. Contents energy meter poly phase energy meter trivector meter. Can you guys suggest some microcontroller for this project. Single phase vs three phase electricity meter help. I am starting a project for single phase energy meter reading. We do not provide any control spring and pointer in an energy meter.
Equation 1 is the basis for the computation of the energy. Energy meter is an instrument which measures electrical energy. Electromechanical energy meters have been the standard for metering the electricity since billing began. The three phase meter is constructed by connecting the two single phase meter through the shaft. Here we discuss the construction and working principle of induction type energy meter. When the energy meter is connected in circuit, the current coil carries the. Below are the the connections diagrams for installation of a single phase 3 phase, 4 wire kwh meter digital or analog energy meter from the supply to the main distribution board in home. This evm has builtin support for measuring ac voltage, current, active power, reactive power, apparent power, frequency, power factor, dc voltage, dc current, and dc active power. Single phase induction type energy meter is also popularly known as watthour meter.
Polyphase systems have three or more energized electrical conductors carrying alternating currents with a defined phase angle between the voltage waves in each conductor. These mid meters are all compact and lightweight and rated as class 1 and 2, so you can rely on electricity meter accuracy. But as we need to sample the voltage and current to get the power, hence it need to be calculated by using this formula. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. It is used in domestic and industrial ac circuit for measuring the power consumption. The simple yet reliable structure of single phase electronic energy meters readily supports the dynamic working range of the meter. The design uses a halfwave rectified power supply circuit and a shunt current sensing element. Given below is the picture of single phase induction type meter. Singlephase watthour meters comply with the technical requirements provided by iec 6205311 and en 504702 standards. Jul 25, 2018 single phase induction type energy meter consists of four important systems which are written as follows. 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. There are two types of induction meters and they are written as follows.
Single phase electricity meters gas meters energy meters. Energy meters are the basic part to measure the power consumption. Mechanism of rotation of an aluminum disc which is. The principle of working and construction of induction type meter is very simple. The observed accuracy was better than 97% discover the. It is a wellknown and most common type of ageold energy meter. A singlephase energy meter prototype has been implemented in the lab to provide measurement up 10 a load current from a 127 v line voltage. What is the solution for the drawbacks of commonly used energy meters. Single phase type three phase type induction meters.
Single phase electronic energy meters which we offer is wellequipped with large integrated circuits along with surface mounted technology. Singlephase induction motors ac motors electronics textbook. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Pic18f87j72 singlephase energy meter calibration users. Single phase motors are very widely used in home, offices, workshops etc. Single phase electricity is connected at 230 or 240 volts via 2 wires, active and neutral, and is found in most domestic settings. It is widely used when compared to the three phase motor for the industrial, commercial and domestic purposes.
Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms. The single phase motor stator has a laminated iron core with two windings arranged perpendicularly. Procedure for calibration and testing of singlephase 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. The total energy is the sum of the reading of both the elements. Single phase induction motor split phase, capacitor and.
Ac energy measurements induction energy meter every household accuracy about 2 % current and voltage coil ac current coil eddy currents disk force to disk variable powers cause variable rotating speed day and night electricity. A single phase energy meter prototype has been implemented in the lab to provide measurement up 10 a load current from a 127 v line voltage. 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. Pdf a single phase microcontroller based energy meter. Thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition. The dds353 is a new generation modern design kwh meter that will measure and display active energy kwh. Understanding the basic theory of shieldedpole shunt magnet. The mcp3909pic18f85j90 single phase energy meter reference design is a fully functional single phase meter. Explain basic principle and development of torque expressions for energy meter. Overview of single phase induction type energy meter.
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