The construction and principle of operation of single phase energy meters is explained below. In all induction meters we have two fluxes which are produced by two different alternating currents on. A wide variety of single phase two wire energy meter options are available to you, such as display type, phase. The design uses a halfwave rectified power supply circuit and a shunt current sensing element. The simple yet reliable structure of single phase electronic energy meters readily supports the dynamic working range of the meter. Compatible with 3 phase, 3wire delta and 3 phase, 4wire wye configurations supplies average active power on the frequency outputs f1 and f2 high frequency output cf is intended for calibration and supplies instantaneous active power logic output revp indicates a potential miswiring or negative power on the sum of all phases. On a singlephase ac supply, the electromechanical induction meter. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. Modified single phase energy meter for rural domestic energy management supplied from solar. This design implements a highaccuracy single phase embedded energy measurement application using msp430afe253. C to the pressure coil circuit by means of phase shifting transformer.
Calibration and testing of singlephase energy meter. The individual pulses are then summated through the use of an electromechanical meter, and are made available at a pulse output as well. Procedure for calibration and testing of singlephase energy meter. 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. Single phase energy meter 36sm overview features event logging tod metering load profiling remote meter reading nclass 1. What is the solution for the drawbacks of commonly used energy meters. Threephase and singlephase energy meters, highquality pdf. Single phase induction type energy meters electrical. Pic18f87j72 singlephase energy meter calibration users guide.
To prove the correctness of theory analysis, combining with harmonics impact. Programmable single phase energy metering ic with tamper detection. There are four main parts of the operating mechanism of single phase induction type. Single phase power measurement instruments are made up of rugged electronic instruments designed specifically for use in the harsh electrical environment common to many utility and industrial applications. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. 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. What is the solution for the drawbacks of commonly. The meter is designed to offer reliable energy measurement in single phase circuit and is highly suitable for metering and remote communication purposes. A wide variety of single phase energy meter options are available to you, such as phase, display type.
Connect the energy meter to the ccgx using the usb to rs485 cable. What are the advantages and disadvantages of usual energy meters. Direct display with the singlephase energy meter with energy consumption indicator. Electromechanical energy meters have been the standard for metering the electricity since billing began. Jul, 2016 operating principle of single phase induction type energy meter. This article focusses only on its constructional features and its working. It uses ad7755, a singlephase energy measurement ic to acquire and. The measurement of energy is accomplished by means of a voltagefrequency converter connected downstream from the power 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 and three phase wattmeters and energy meters. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Power and energy measurements encyclopedia of life. Electronic single phase watthour meter adopts largescale ic, the latest microelectronic technologies and smt techniques. This electronic meter does not possess any rotating parts, and the. This service is comprised of three phases and one neu tral conductor, as. Single phase induction type energy meter pdf to understand the basic construction and different components of a single phase induction type energy meter.
Top 7 mistakes newbies make going solar avoid these for effective power harvesting from the sun duration. Mcp3909 and pic18fj90 single phase energy meter reference design. Electrical energy meters principles and applications. 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 single phase electrical energy meter principle block diagram is shown in. The meter complies with national and international metering standards. 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. North eastern electricity supply company of odisha limited. 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. To study the construction and working of single phase energy meter and to find out energy consumed in 30 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. Energy meter is an instrument which measures electrical energy. Operating principle of single phase induction type energy meter. 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. But for larger loads, step down current transformers must be placed to isolate energy meters from higher currents. Procedure for calibration and testing of single phase energy meter. Energy meters are the basic part to measure the power consumption. Single phase energy meter on sales quality single phase. Single phase induction type energy meter slideshare.
The simplest such instrument is single phase induction type energy meter. Circuit diagram of 2 nd order low pass butterworth filter. It comes with suitable display with a range of communication options for local and remote monitoring. Single phase induction type energy meters electrical concepts. The dsp implements an automatic digital offset cancellation that makes possible avoiding any manual offset calibration on the analog inputs. Phasor diagram of single phase induction type energy meter 6. Two standard current sensing circuit implementations shunt resistor and ct. It features in high accuracy, low power consumption and reliable stability and superior antitampering functions. The design is intended to be low cost and is transformerless. The three phase meter is constructed by connecting the two single phase meter through the shaft.
A simple capacitive power supply for the msp430 energy meter appropriate values of resistor r22 and capacitor c49 are chosen based on the required output current drive of the. The electricity meters in our single phase meter range are all mid approved meters. Ade7752b 3phase, 3wire, and 4wire energy metering ic. Construction and working of single phase energy meter. Modbus registers are a 32bit data type enable checkbox. This design implements a highaccuracy singlephase embedded energy measurement application using msp430afe253. Drm121, mqxenabled mcf51em256 singlephase electricity meter. A current transformer, ct, operated meter, particularly suitable for larger loads, requires the load cable busbar, to be fed through a ct. This article is only focused about its constructional features and its working. Pdf a cost effective novel single phase digital energy meter is developed with. Once the mercury pool was exhausted, the meter became an open circuit. Single phase induction type energy meter is also popularly known as watthour meter.
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. About 94% of these are energy meters, 0% are power meters, and 0% are voltage meters. Implementation of a singlephase electronic watthour. A single mcp3909 acts as the analog front end measurement. These power measurement instruments are ideally suited to applications where reliable, precise measurements are required, but where. Dds102j1 single phase electronic energy meter register display ddsy102k3 single phase electronic type prepayment energy meter ddsy102k7 single phase electronic type microwireless energy meter. This manual is for single phase energy meter for active energy. People told me that three phase meter consumes too much electricity as compared to single phase anyone to comment on this aspect.
To study the construction and working of single phase energy meter and to find. There are four main parts of the operating mechanism i driving system ii moving system iii braking system. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. Pdf a single phase microcontroller based energy meter. It is used in domestic and industrial ac circuit for measuring the power consumption. Single phase energy meter working of single phase induction. A single phase meter is used in alternating current systems.
Overview of single phase induction type energy meter. Mid meters require no subsequent calibration with calibration mark. Adis ade energy measurement ics combine analogtodigital converters with. Single phase electronic energy meter,1 phase electronic. Dds102j1 single phase electronic energy meter register display. Single phase electricity is connected at 230 or 240 volts via 2 wires, active and neutral, and is found in most domestic settings.
Jul 25, 2018 energy meters are the basic part to measure the power consumption. Ade7752b 3phase, 3wire, and 4wire energy metering ic with. Pic18f87j72 singlephase energy meter calibration users guide 2011 microchip technology inc. Main features lcd with 8 digits display format for energy record and meter status. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures. 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. Mqxenabled mcf51em256 singlephase electricity meter reference design, rev. Single phase electronic energy meters which we offer is wellequipped with large integrated circuits along with surface mounted technology. Induction type energy meter used invariably to measure the energy consumed in any a. This interface is used exclusively for joining the 20xrfc daughter card to the. Jun 08, 2016 thus we need an integrating instrument which can measure and record the energy consumed by the load under varying load condition.
Implementation of a singlephase electronic watthour meter. The rs485 to usb interface cable between the ccgx and the energy meter can be extended up to 100 meters. The total energy is the sum of the reading of both the elements. These may be single or three phase meters depending on the supply utilized by domestic or commercial installations. Name of materials unit quantity cost of tender paper rs emd rs single phase energy meter of 1060 amp. Rating of single phase energy meter, three phase energy meter 2. Single phase energy metering ic with pulsed output and digital. Energy meter circuit detailed project with source code. The mcp3909pic18f85j90 single phase energy meter reference design is a fully functional single phase meter.
Ii power and energy measurements arnaldo brandolini and alessandro gandelli encyclopedia of life support systems eolss 2. Triple singlephase circuits and threephase circuits threephase circuitsas with singlephaserepresent a particular case of. Feb 19, 2017 construction and working of single phase energy meter. Therefore, this type of meter is also called anintegrating meter. 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. A direct connect meter has the electrical cables wired in to and out of it, meaning the load current passes through the meter itself. Measuring harmonic energy with a solid state energy meter pdf. Pdf in this paper the energy limiting is explored by the use of modified single phase. Induction type energy meter essentially consists of following components.
What is the difference between single phase vs three phase electricity meter i have seen many houses in my streets who are using three phase meters and few houses using single phase meters. Here we discuss the construction and working principle of induction type energy meter. Analog devices ade energy measurement ics address the challenges of. One single phase energy meter, one single phase load, stop watch and connecting wires. The most common schemes seem to combine an existing national standard for. About 79% of these are energy meters, 2% are power meters. Here we are going to discuss the single phase induction type in detail. Dds102j3 single phase electronic energy meter register display dds102t1 single phase electronic energy meter. The energy is the total power consumed and utilised by the load at a particular interval of time. Single phase vs three phase electricity meter help. Single phase electricity meters gas meters energy meters.
It is used everywhere, no matter how big or small consumption it is. Construction and principle of operation single phase induction type energy meter. Mechanism of counting and displaying the amount of energy transferred. Pic18f87j72 singlephase energy meter calibration users. A singlephase meter is used in alternating current systems. Apr, 2012 introduction single phase induction meter 3. Combining pairing them by means of two multiplying stages. Single phase electromechanical induction energy meter. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Working of single phase induction type energy meter. Single phase energy meter single phase induction type energy meter is also popularly known as watthour meter. For small service measurements like domestic customers, these can be directly connected between line and load. But these are now being gradually replaced by electronic digital energy meters.
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