Measurement of power and reactive kva in 3 phase balanced and unbalanced systems. Pl explain 3 phase energy meter working principle and how. Their construction and operation comply with the technical requirements provided by iec 6205311, en 504702, din 43857 and iec 60145 standards. Pdf a prototype design for three phase smart energy meter. The above drawing shows a simple single phase motor circuit. A wide variety of three phase analog energy meter options are available to you, such as phase, display type. Mechanism of counting and displaying the amount of energy transferred.
Ade7752b 3phase, 3wire, and 4wire energy metering ic with. Static three phase energy meters shall only quote against this. The 160segment lcd displays energy, voltage, current and more for all 3 phases. 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. A 3phase energy meter has same elements as in case of a singlephase energy meter. A wye system allows the use of two different voltages from all three phases, such as a 230400 v system which. Threephase and singlephase energy meters, highquality pdf. What are the advantages and disadvantages of usual energy meters. Induction type watt hour meter or energy meter about circuit. This article is only focused about its constructional features and its working.
Threephase onerate electric meters are meant for measuring active or reactive electric energy consumption on 3 or 4 wire threephase networks. 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 principle of working and construction of induction type meter is very simple. This threephase energy meter measures active energy by means of the. Working of single phase induction type energy meter. Single phase induction type energy meter is also popularly known as watthour meter. Overview of single phase induction type energy meter. Pdf this paper presents design and construction of a threephase smart energy meter.
The meter and push fit type meter box shall be supplied in suitable packing so. In this video, i also explain the 3 phase distribution board diagram in which i explain the threephase kwh meter connection and installation, 4 pole. Explain basic principle and development of torque expressions for energy meter. This type of smart meter is designed for lv or hv three phase users. The basic working of single phase induction type energy meter is only focused on two mechanisms. Jul, 2016 operating principle of single phase induction type energy meter. Single phase energy meter single phase induction type energy meter is also popularly known as watthour meter.
Theory and operation phasor diagram of single phase induction type energy meter. Evm430f47197 threephase energy metering evm msp430f47197. A measuring system with three multipliers is required for 4wire threephase systems of unbalanced load with neutral conductor n. Ac energy measurements induction energy meter every household accuracy about 2 % current and. Feb 15, 2014 induction type measuring instrument energy meter 1. What is the working principle of three phase energy meter. Electromechanical energy meters have been the standard for metering the electricity since billing began.
Solenoids or capacitors, which are passive type elements induce reactive power. Constructionally an induction type single phase watt hour meter has many similarities to an induction type wattmeter. Test output device should be provided in the form of one common led for active. Mechanism of rotation of an aluminium disc which is made to rotate at a speed proportional to the power. Single phase energy meters, electronic analyzer, vif meter etc. The meter has been granted eec model approval certificate by. How does 3 three phase power meter work by aradhana issuu. Three phase four wire, whole current meter, direct reading type. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Multiplying instantaneous values of voltage and current, power is obtained. It is a wellknown and most common type of ageold energy meter. Jan 16, 2018 in this video, i also explain the 3 phase distribution board diagram in which i explain the three phase kwh meter connection and installation, 4 pole mccb wiring, double pole mcb, double pole rcd. Moreover, the working principle of a watthour meter is more or less similar to that of an induction type wattmeter.
Energy meter circuit detailed project with source code. Ade7752b 3phase, 3wire, and 4wire energy metering ic. As an example, a value of 0x40000000 corresponds to a phase of 90. Single phase induction type energy meters is very commonly used to. There are four main parts of the operating mechanism of single phase induction type. Induction type energy meter essentially consists of following components. Induction type measuring instrument energy meter 1. And reduce the current flow in mains circuit,is it will help to reduce my electricity bill, and. Jun 08, 2016 thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition. In all induction meters we have two fluxes which are produced by two different alternating currents on. The following is some common faults and troubleshooting method of threephase induction motors for your reference. The total energy is the sum of the reading of both the elements. Type of display like analog or digital electric meter. Induction motors were vastly better but required 3 phase.
Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. When it comes to electricity, the thing of biggest concern is to keep the current and voltage levels within tolerable limits. The meter will enable us to measure energy units consumed by 3 phase loads. Product overview important information on using the mcp3909 3phase energy meter reference design including a getting started. The meters should be suitable for three phase four wire system, capable to record and display monthly average p. Working of single phase induction type energy meter the basic working of single phase induction type energy meter is only focused on two mechanisms. Implementation of a threephase electronic watthour meter using. These types of motors are known as selfstarting induction motors. Handbook on electricity meters asiapacific economic cooperation. The 10 types of measuring instruments also include active electrical energy meters. Therefore, this type of meter is also called an integrating meter. Construction and operation of current and potential transformers. Returns the amplitude of the sine wave at the specified phase. Hence it is the working of induction type energy meter, adjustment of induction type energy meter.
But these are now being gradually replaced by electronic digital energy meters. Use of instrument transformers for extension of instrument range. About 97% of these are energy meters, 0% are power meters. Understanding the basic theory of shieldedpole shunt magnet. How to design the 3 phase delta connection energy meter all. Electric utilities use electric meters installed at customers premises for billing purposes. The three phase meter is constructed by connecting the two single phase meter through the shaft. Induction type energy meter ii electrical technology ii unit 3. Hi all, i am planning to design the energy meter for 3 phase delta connection to monitor the voltage and current of delta induction motor runs at 415v. The three phase energy meter was implemented in the laboratory with a current of up to 20 amps and a voltage of up to 250 volts. Onewattmeter, twowattmeter and threewattmeter methods. Study of single phase induction type energy meter or watt.
This evm430f47197 is a threephase electricity meter evaluation board based on the msp430f47197, metrology systemonchip soc. Electrical energy meters principles and applications. Mega with the help of three ac current sensors and three ac voltage sensors. Study the construction and working of single phase energy. The commercial unit of electrical energy is kilowatt hour kwh. Induction type single phase energy meters measure electric energy in. Mcp3909 3phase energy meter reference design using. Energy meter or watt hour meter is classified in accordance with several factors such as. Driving system moving system breaking system registering system 2. The threewattmeter method can also be used in the absence of a neutral conductor if an artificial neutral is available. An energy meter is used to measure the energy consumed in the kilowatt hours. Single phase energy meter working of single phase induction. 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. Single phase energy meter theory pdf download mastercard.
A single phase energy meter is electrical meter used to measure the amount of electrical energy consumed by electrical devices, residences and business. The simplest such instrument is single phase induction type energy meter. A singlephase meter is used in alternating current systems. They are typically calibrated in billing units, the most common one being the kilowatt hour kwh.
The three phase energy meter was implemented in the laboratory with a. In our selection of three phase meters you can choose from panel mount or dinrail mount three phase, direct connect or ct connect three phase meters and we also have prepayment meters for the domestic applications. Therefore, learn about these phenomena, find out the cause, and then troubleshoot it. 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. Type of metering point like grid, secondary transmission, primary and local distribution. 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. Energy meter code library for 1phase to 3phase using. Us583950a us583950da us583950a us 583950 a us583950 a us 583950a us 583950d a us583950d a us 583950da us 583950 a us583950 a us 583950a authority us united states. We do not provide any control spring and pointer in an energy meter. Neutral n are interchangeable and are indicative of ac mains voltage source from the energy utilities.
Phase energy meter the equipment covered by these broad specifications shall conform to the requirements stated in latest editions of relevant indian iec standards and regulations. This is used in each and every house and industry for calculating the energy consumed by them. Pl explain 3 phase energy meter working principle and how can reduce electric cost and reduce the current flow in mains circuit,is it will help to reduce my electricity bill, and. 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. What is the solution for the drawbacks of commonly used energy meters. Three phase onerate electric meters are meant for measuring active or reactive electric energy consumption on 3 or 4 wire three phase networks. The meter and push fit type meter box shall be supplied in suitable packing so as to withstand transit shocks during road transport. Measurement of power and reactive kva in 3phase balanced and unbalanced systems. This evm430f47197 is a three phase electricity meter evaluation board based on the msp430f47197, metrology systemonchip soc.
An electrical motor is an electromechanical device which converts electrical energy into mechanical energy. Energy meter code library for 1phase to 3phase using msp430. A prototype design for three phase smart energy meter. In electrical engineering, threephase electric power systems have at least three conductors carrying alternating current voltages that are offset in time by onethird of the period. Single phase electromechanical induction energy meter. The meter is equipped with several communication port, it has a remote interface, which is using for ami system building. In a single phase supply, a single alternating current is supplied through a single wire, whereas in a three phase system 3 wires carry alternating current with a definite time offset in between the voltage waves. A movingcoil permanentmagnet instrument can be used as fluxmeter. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. In the case of three phase ac alternating current operation, the most widely used motor is a 3 phase induction motor, as this type of motor does not require an additional starting device. Parameters phase the 32bitnumber corresponding to the phase to be looked up where the 32bitintegerrangemaps to the 0360 range. The msp430f47197 offers 7 sigmadelta converters that allow measurement of 3 phases with antitamper. Pl explain 3 phase energy meter working principle and how can reduce electric cost 1 answers i hope the energy meter will consider only the amount of current flow in case if i improve p.
And reduce the current flow in mains circuit,is it will help to reduce my electricity bill, and reducing produce heat, loss of electricity. It comprises a rotating aluminum disc placed on a spindle between two electromagnets. 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. In this article, we are going to discuss that how to design a 3 phase smart energy meter using arduino. 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.