Single phase induction type energy meter is also popularly known as watthour meter. The design uses a halfwave rectified power supply circuit and a shunt current sensing element. Direct display with the singlephase energy meter with energy consumption. Pdf design and building a singlephase smart energy meter using. Mcp3909 and pic18fj90 single phase energy meter reference design. The mcp3909pic18f85j90 single phase energy meter reference design is a fully functional single phase meter. 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.
Jul 25, 2018 single phase induction type energy meter consists of four important systems which are written as follows. Driving system consists of two electromagnets on which pressure coil and current coils are wounded, as shown above in the diagram. However the meter should withstand the maximum system voltage. Jan 15, 2018 in this video, i try to explain the concept of single phase electrical meter or single phase energy meter.
The three phase meter is constructed by connecting the two single phase meter through the shaft. The stpm01 is designed for effective measurement of active, reactive and apparent energy in a power line system using rogowski coil, current transformer and shunt sensors. Use of instrument transformers for extension of instrument range. Overview of single phase induction type energy meter. Single phase energy meter working of single phase induction. Energy meter circuit detailed project with source code. Single phase electricity meters gas meters energy meters. It is used in domestic and industrial ac circuit for measuring the power consumption.
Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. A single phase microcontroller based energy meter conference paper pdf available in conference record ieee instrumentation and measurement technology conference 2. Single phase energy meter theory pdf download mastercard downlood triber vodafon author. Download fulltext pdf download fulltext pdf download fulltext pdf a prototype design for three phase smart energy meter conference paper pdf available december 2017 with 4,309 reads. In these relays, a metallic disc is allowed to rotate between the two electromagnets.
It is used everywhere, no matter how big or small consumption it is. Apr, 2012 introduction single phase induction meter 3. Pdf a single phase microcontroller based energy meter. 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. 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 individual pulses are then summated through the use of an electromechanical meter, and are made available at a pulse output as well.
Dt722 three phase electrical meter the dt722 three phase fourwire kwh eelctricity meter, it has function of identifying the power dire. Single phase induction motors the single phase induction motor comes with the different starting arrangements. Instead of using the costly energy measuring chip ade 7751 or similar type, we have developed measuring circuit employing current transformer ct, potential. Singlephase smart distribution test and measurement instruments.
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 meter which is used for measuring the power of three phase supply is known as the three phase energy meter. The induction type singlephase watthour meters uses a. The most common type of electricity meter is the electromechanical watthour meter. A single phase meter is used in alternating current systems. 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. It comprises a rotating aluminum disc placed on a spindle between two electromagnets.
Electromechanical type the electromechanical induction meter operates by counting the revolutions of a nonmagnetic, but electrically conductive, metal disc which is made to rotate at a speed pro. They are typically calibrated in billing units, the most common one being the kilowatt. The measurement of energy is accomplished by means of a voltagefrequency converter connected downstream from the power meter. The three phase energy meter is used for measuring the large power consumption. Active energymeters for singlephase alternating current with a, 7 digits counter. Therefore, this type of meter is also called anintegrating meter. The ratio of the shunt magnet flux and series magnet flux large with the help of. I am currently studying msp430afe2xx from texas instrument, any pointers for this ic. Jul, 2016 operating principle of single phase induction type energy meter. 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.
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. The complete set up consists of two energy meters, wattmeter, voltmeter, ammeter, variac. This device can be implemented as a single chip monophase energy meter or as a peripheral measurement in a microcontroller based monophase or 3phase energy meter. Due to alternating fluxes there is an induced emf, the emf produced at one. The meter is designed to offer reliable energy measurement in single phase circuit and is highly suitable for metering and remote communication purposes. Explain basic principle and development of torque expressions for energy meter. What are the advantages and disadvantages of usual energy meters. There are four main parts of the operating mechanism of single phase induction type. To comply with din vde 0100443 and din vde 0100534, a type 2 or type 3.
The meter complies with national and international metering standards. Single phase vs three phase electricity meter help. The basic working of single phase induction type energy meter is only focused on two mechanisms. Thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition. Bl6503 features single phase energy meter ic description high accuracy, less than 0. Single phase energy meter theory pdf download mastercard. Can you guys suggest some microcontroller for this project. The simple yet reliable structure of single phase electronic energy meters readily supports the dynamic working range of the meter. Electrical energy meters principles and applications. 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 commercial unit of electrical energy is kilowatt hour kwh. 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. Phasor diagram of single phase induction type energy meter 6. It is widely used when compared to the three phase motor for the industrial, commercial and domestic purposes.
Singlephase electric meter with isolated energy measurement design guide rev. 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. Single phase electricity is connected at 230 or 240 volts via 2 wires, active and neutral, and is found in most domestic settings. There are two types of induction meters and they are written as follows. A single mcp3909 acts as the analog front end measurement circuitry. Dds102j3 single phase electronic energy meter register display. 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.
The series electromagnet is energized by a coil, known. The application processor is a proxy between the afe and various types of external. It is a wellknown and most common type of ageold energy meter. 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. Single phase electronic energy meters which we offer is wellequipped with large integrated circuits along with surface mounted technology. This device can be implemented as a single chip monophase energy meter or as a peripheral measurement in a microcontroller based monophase or 3 phase energy meter. Single phase electric meter with isolated energy measurement design guide rev. It comes with suitable display with a range of communication options for local and remote monitoring. This design implements a highaccuracy single phase embedded energy measurement application using msp430afe253. And also for reading the current ct is used which is inductive and current will lag. Single phase digital energy metermeter connection how. It is used in domestic and industrial ac circuit for measuring the power.
The software can be downloaded for free from the eltako homepage. The power needs of the majority of the shops, houses and small houses can be easily met through a single phase system. The single phase motor stator has a laminated iron core with two windings arranged perpendicularly. Understanding the basic theory of shieldedpole shunt magnet. Phasor diagram of single phase induction type energy meter. For friction compensation in an induction watthour meter is done by making a. The total energy is the sum of the reading of both the elements. The design is intended to be low cost and is transformerless. The construction of the single phase energy meter is shown in the figure below. This article is really good kurrey consultancy services november 25, 2018 at 2. These relays work on the principle of the induction motor or an energy meter. Dt722 three phase electrical meter the dt722 threephase fourwire kwh eelctricity meter, it has function of identifying the power dire. Pdf a prototype design for three phase smart energy meter. The simplest such instrument is single phase induction type energy meter.
Procedure for calibration and testing of single phase energy meter. Calibration and testing of singlephase energy meter. Mechanism of rotation of an aluminum disc which is. Give the connections as per the circuit diagram above. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc. Single phase electronic energy meter,1 phase electronic. Three phase portable energy meter calibration equipment. The principle of working and construction of induction type meter is very simple. The electricity meters in our single phase meter range are all mid approved meters. Generally, an ebook can be downloaded in five minutes or less. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. But these are now being gradually replaced by electronic digital energy meters.
Jul 25, 2018 energy meters are the basic part to measure the power consumption. The above drawing shows a simple single phase motor circuit. I am starting a project for single phase energy meter reading. The dd862 type singlephase watthour meter is a kind of induction type meter which is applicable to. These mid meters are all compact and lightweight and rated as class 1 and 2, so you can rely on electricity meter accuracy. Construction driving system, moving system, braking syatem, and registering system 4. The red wire shows the live or line or phase and the blake shows the neutral wire. An induction type single phase energy meter, as show in fig has. Procedure for calibration and testing of singlephase energy meter.
Handbook on electricity meters asiapacific economic cooperation. The energy is the total power consumed and utilised by the load at a particular interval of time. 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. Single phase induction type energy meters electrical concepts. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. 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.
Operating principle of single phase induction type energy meter. The dd862 type single phase watthour meter is a kind of induction type meter which is applicable to. 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. The gf302d1 three phase portable energy meter test system consists of an integrated three phase current and voltage sourceup to 500v120a or 500v20a and builtin threephase electronic reference standard of accuracy class 0. Working of single phase induction type energy meter.
Therefore, this type of meter is also called an integrating meter. Single phase electromechanical induction energy meter. Singlephase electric meter with isolated energy measurement. Dds102j1 single phase electronic energy meter register display ddsy102k3 single phase electronic type prepayment energy meter ddsy102k7 single phase electronic type microwireless energy meter. Single phase energy meter all you need to know toppr. The induction type relays are also called magnitude relays. Voltage from mains is directly fed to a rc based circuit followed by a. Single phase induction type energy meter slideshare. C to the pressure coil circuit by means of phase shifting transformer. These graphics below shows the above idea in a very simple way. Study of single phase induction type energy meter or watt. The coils of the electromagnets are energised with the help of alternating currents. Threephase and singlephase energy meters, highquality pdf.
Single phase type three phase type induction meters. This design implements a highaccuracy singlephase embedded energy measurement application using msp430afe253. Energy meters are the basic part to measure the power consumption. Note down the reading of two meters in a given period of time, say 2 minutes. Since an energy meter is always interfaced to the ac mains, the dc supply required for the measuring element. A singlephase meter is used in alternating current systems. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Single phase digital energy metermeter connection how to. Electromechanical energy meters have been the standard for metering the electricity since billing began. The copper shading bands are also called the power factor compensator or compensating loop. This evm has builtin support for measuring ac voltage, current, active power, reactive power, apparent power, frequency, power factor, dc. What is the solution for the drawbacks of commonly used energy meters.
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