This document is highly rated by electrical engineering ee students and has been viewed 1 times. On a singlephase ac supply, the electromechanical induction meter. The red wire shows the live or line or phase and the blake shows the neutral wire. Single phase induction meters are very popular for domestic and industrial use because of its wide application as energy meter. Note down the reading of two meters in a given period of time, say 2 minutes. Thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition. It has some inertia and so it could have an error due to the inertia if the supply. A singlephase energy meter with capacitive power supply and shunts, rev. Single phase induction motors are used primarily for domestic and lightindustrial applications where threephase supply is generally not available. The electric energy generated purchased by consumers for different needs. Lighting indooroutdoor cfl, incandescent, led, halogen heating electric water heaters, clothes dryers, electric stoves and ovens power supply of electronic devices computers.
Induction type energy meter essentially consists of following components. Single phase electronic energy meter,1 phase electronic. Single phase energy meters single phase energy meter. The principle of working and construction of induction type meter is very simple. Drm121, mqxenabled mcf51em256 singlephase electricity meter. It is used everywhere, no matter how big or small consumption it is. Costeffective and flexible singlephase energy meter. Single phase energy meter working of single phase induction. Give the connections as per the circuit diagram above.
Single phase induction type energy meters are extensively used for the measurement of electrical energy in single phase a. Solenoids or capacitors, which are passive type elements induce reactive power. Once the mercury pool was exhausted, the meter became an open circuit. 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. How does meter can be reversed in household single phase induction type energy meter.
The energy is the total power consumed and utilised by the load at a particular interval of time. In addition to metering based on the amount of energy used, other types of. In other words, the voltage coil produces a high ratio of inductance to. Different types of phase sequence testers are available in todays market like contact or non contact, static or rotating, etc. Portable energy meter calibrator available including three phase, single phase meter test equipment. Mcp3909 3phase energy meter reference design using. Electrical energy meters principles and applications. A wide variety of single phase energy meter options are available to you, such as phase, display type. To comply with din vde 0100443 and din vde 0100534, a type 2 or type 3 surge.
The more important of these are described briefly below, together with some compensations which are. About 82% of these are energy meters, 3% are power meters, and 0% are circuit breakers. This document describes how to use the mcp3909 3phase energy meter reference design as a development tool to emulate and debug firmware on a target board. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. And also the correct operation of measuring instruments like 3 phase energy meter and automatic control of devices also depend on the phase sequence. The main alterations are the provision of only one pressure coil upon the. Threephase and singlephase energy meters, highquality pdf. 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. Overview of single phase induction type energy meter. Construction driving system, moving system, braking syatem, and registering system 4. An4164, a singlephase energy meter with capacitive power. This article is only focused about its constructional features and its working. Why would you want to do this except for trying to steal power from.
Basically an induction type energy meter is a form of a two phase induction motor. 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. It is used in domestic and industrial ac circuit for measuring the power consumption. Single phase electromechanical induction energy meter. 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. 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. The basic working of single phase induction type energy meter is only focused on two mechanisms. 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. Calibration and testing of singlephase energy meter. Mechanism of counting and displaying the amount of energy transferred. Induction type energy meter ii electrical technology ii unit 3 s. Our product range includes a wide range of single phase energy meter with multifunctional lcd, single phase energy meter with rs 485 communications, single phase ac static watt hour meter, single phase multifunction electronic energy meter with lcd, single phase static energy meter with counter display and power meter. Voltage from mains is directly fed to a rc based circuit followed by a. What are the errors in an induction type energy meter.
Consists of 3 separate phases to distribute ac power. In a single phase induction energy meter, in order to obtain true value of energy, the shunt magnetic flux should lag. Single phase induction type energy meter errors points. The total energy is the sum of the reading of both the elements. Single phase induction type energy meter working explained including constructional details. This design implements a highaccuracy singlephase embedded energy measurement application using msp430afe253. Types of single phase induction motors electronics hub. The disc of a single phase inductiontype energy meter makes 60 revolutions in 6 minutes.
Technical specifications for single phase static meter the equipment covered by these broad specifications shall conform to the requirements stated in latest editions of relevant indian iec standards and regulations. It is precertified according to european en50470 1, en504703, class b and c, as well as to iec 6205321 and iec 6205211 international standards for electronic meters of active. Induction type energy meter used invariably to measure the energy consumed in any a. Energy meters are the basic part to measure the power consumption. Operating principle of single phase induction type energy meter. Pic18f87j72 singlephase energy meter calibration users guide. Study of single phase induction type energy meter or watt. Singlephase energy meter with tamper detection based on. A singlephase meter is used in alternating current systems. 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. Single phase induction type energy meter is also popularly known as watthour meter. Each phase is 120 degrees out of phase with the others. Due to alternating fluxes there is an induced emf, the emf produced at one. What are the errors in single phase energy meter answers.
Mar 26, 2020 study of single phase induction type energy meter or watthour meter electrical engineering ee notes edurev is made by best teachers of electrical engineering ee. In a single phase induction energy meter, in order to. Therefore, this type of meter is also called anintegrating meter. Single phase induction type energy meters electrical. The meter is designed to offer reliable energy measurement in single phase circuit and is highly suitable for metering and remote communication purposes. Rs485 bus two way threephase energy meter dsz14wdrs3x5a mid. The commercial unit of electrical energy is kilowatt hour kwh. These graphics below shows the above idea in a very simple way. As mentioned above that, due to the rotating magnetic field of the stator, the induction motor becomes self starting.
The simple yet reliable structure of single phase electronic energy meters readily supports the dynamic working range of the meter. Working of single phase induction type energy meter. Implementation of a singlephase electronic watthour. There are four main parts of the operating mechanism of single phase induction type. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev. The 1phase 2wire installation is the most common form of electricity. The individual pulses are then summated through the use of an electromechanical meter, and are made available at a pulse output as well. Singlephase energy meter with tamper detection based on st7flite2x introduction this application note describes the design for a singlephase power energy meter with tamper detection. It is a wellknown and most common type of ageold energy meter. Select the help menu, and then topics to open a list of available online help files.
Energy meter is an integrating instrument which measures the total quantity of electrical energy supplied to the circuit in given period. Singlephase electric meter with isolated energy measurement. A movingcoil permanentmagnet instrument can be used as fluxmeter. Our three directconnected singlephase energy meter can be widely used in various organisation. Single phase electronic energy meters which we offer is wellequipped with large integrated circuits along with surface mounted technology. Induction type meters electrical study app by saru tech.
These three directconnected singlephase energy meter can be customise in nature. Induction type single phase energy meters measure electric energy in. 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 meter complies with national and international metering standards. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. C to the pressure coil circuit by means of phase shifting transformer. Due to alternating fluxes there is an induced emf, the. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures.
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. It comes with suitable display with a range of communication options for local and remote monitoring. The measurement of energy is accomplished by means of a voltagefrequency converter connected downstream from the power meter. It comprises a rotating aluminum disc placed on a spindle between two electromagnets. In all induction meters we have two fluxes which are produced by two different alternating currents on a metallic disc.
Pic18f87j72 singlephase energy meter calibration users. Product overview important information on using the mcp3909 3phase energy meter reference design including a getting started. Procedure for calibration and testing of singlephase energy meter. Directconnected singlephase energy meter we are manufacturer and supplier of high quality three directconnected singlephase energy meter from delhi,india. The threephase power meter reference design is used for measurement and registration of active and reactive energy in threephase networks for direct connection. The electromechanical induction meter operates by counting the revolutions of an. Here we discuss the construction and working principle of induction type energy meter. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Induction meter includes types such as induction voltmeters, induction ammeters and induction watthour meters. This voltage coil has many turns and is arranged to be as highly inductive as possible. The simplest such instrument is single phase induction type energy meter. The design measures active power, voltage, current, power factor and line frequency in a singlephase distribution environment and displays active energy, voltage. A8 electromechanical watthour meters made by pafal.
Energy meter errors in addition to errors due to incorrect settings of the main adjustments, there are errors in meter registrations due to other causes. Therefore, this type of meter is also called an integrating meter. A shunt has man y adv antages o ver current transformers. Single phase energy meter single phase induction type energy meter is also popularly known as watthour meter. Driving system moving system breaking system registering system 2. The application processor is a proxy between the afe and various types of.
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