The basic working of single phase induction type energy meter is only focused on two mechanisms. The three phase meter is constructed by connecting the two single phase meter through the shaft. What is the solution for the drawbacks of commonly used energy meters. Drm121, mqxenabled mcf51em256 singlephase electricity meter. Star delta starter explained working principle duration. Therefore, this type of meter is also called an integrating meter. What are the advantages and disadvantages of usual energy meters.
It measures line voltage and current and calculates active, reactive, and apparent energy, as well as instantaneous rms voltage and current. The total energy is the sum of the reading of both the elements. So lets disuse the distribution board wiring diagram step by step. Socket switching actuator fsva230v10a with current measurement. Grid meter, and used as control input for an ess system 1.
Single phase energy meter theory pdf download mastercard downlood triber vodafon author. 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. Mechanism of rotation of an aluminum disc which is. Presented here is a simple energy meter using analog devices ade7757 chip for single phase, 2wire phase and neutral systems used in households. How to wire single phase kwh energy meter electricalonline4u.
Working of single phase induction type energy meter. This design implements a highaccuracy single phase embedded energy measurement application using msp430afe253. But these are now being gradually replaced by electronic digital energy meters. These graphics below shows the above idea in a very simple way. However the meter should withstand the maximum system voltage. 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. 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. 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. Electrical information of the meter is displayed on the name plate such as the type of connection, voltage, current, frequency, etc. Two and threeelement meters are simply two or three single elements having a common shaft and register, which serve to totalize the energy measured by each element. Watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. The working of single phase induction type energy meters are based on two main fundamentals. Energy meter circuit detailed project with source code. In the diagram i start form utility pole to the energy meter.
The 1 phase power meter pcegpa 62 graphic power quality analyzer with network analyzer power and energy meter with data logger. This section describes the hardware for the design of a working 3phase energy meter that uses the. Implementation of a singlephase electronic watthour. The conzerv energy meters are a stepup compared to traditional counterparts newage led display and consumptionmonitoring capabilities. Single phase energy meter hxe12kp hexing electrical co. Therefore, this type of meter is also called anintegrating meter. The voltage and currents of the power line are rated down to signal level using transducers like voltage and current transformers and given to that ic as shown in the figure. Here we discuss the construction and working principle of induction type energy meter. The unit is 1 vars for sampled data voltage and current.
Figure 3 shows a simple capacitor power supply for a single output voltage of 3. Static meters for active energy classes 1 and 2 iec6205331 electricity metering equipment a. Wiring of the distribution board from energy meter to the. Energy meters are the basic part to measure the power consumption. This evm has builtin support for measuring ac voltage, current, active power, reactive power, apparent power, frequency, power factor, dc. Real true energy, instantaneous power, irms, and vrms for single phase 2 or 3wire power metering applications. Single phase energy meter working of single phase induction. Single phase, multifunction metering ic with neutral. The unit is 1 var energy a is called passive energy a reactive qt. It is used in domestic and industrial ac circuit for measuring the power consumption. The energy is the total power consumed and utilised by the load at a particular interval of time. Note down the reading of two meters in a given period of time, say 2 minutes.
Phasor diagram of single phase induction type energy meter 6. Overview of single phase induction type energy meter. The rotation of metallic disk is operated by two coils. Calibration and testing of singlephase energy meter. The energy meter thus determines and adds together or integrates all the instantaneous power values so that total energy used over a period is thus known. The red wire shows the live or line or phase and the blake shows the neutral wire. 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. Single phase energy meter theory pdf download mastercard. By implementing the watthour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered device or a business. Conzerv energy meters keep all your energy consumption patterns and machineefficiency on track with schneider electrics modern and technologically advanced conzerv energy meters. One single phase energy meter, one single phase load, stop watch and connecting wires.
When the energy meter is connected in circuit, the current coil carries the load current and pressure coil carries the current proportional to the supply voltage. In the above diagram, i shown an utility pole form which i get supply to kilowatt hour e meter and after that i get supply form energy meter. Threephase and singlephase energy meters, highquality pdf. Electrical energy meters principles and applications. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter.
Mechanism of rotation of an aluminium disc which is made to rotate at a speed proportional to the power. Procedure for calibration and testing of single phase energy meter. To enable a registration process for future upgrades of the energy meter, the documentation package is delivered with an rid and pic label. Construction driving system, moving system, braking syatem, and registering system 4. Technical data singlephase energy meter, threephase meters and energy. Design and implementation of wireless energy meter system. Arrangement of counting and displaying the amount of energy consumed. Mechanism of rotation of an aluminum disc which is made to rotate at a speed proportional to the power. This document is the manual for the single phase max 100 a energy meter. The reading on the 3ph meter would equal the sum of the three separate readings on the single phase meters. Energy meter is an instrument which measures electrical energy. It is designed to accurately measure and calculate. 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. Energy meter wiring in the above diagram i taken electric supply form utility pole to single phase energy meter and then i get supply to them distribution main board.
Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. The neutral sides of the single phase meters do not need to be connected to the neutral. It uses ad7755, a single phase energy measurement ic to acquire and process the input voltage and current parameters. C to the pressure coil circuit by means of phase shifting transformer. F, a single phase microcontroller based energy meter, ieee instrumentation and measurements technology conference st. They are typically calibrated in billing units, the most common one being the kilowatt. To study the construction and working of single phase energy meter and to find out energy consumed in 30 minutes. Principle wem monitors the energy consumption for a single phase supply. The device incorporates three adcs with a high accuracy energy measurement core. In a single phase utility grid, connect the line conductor l1 and the neutral. Below energy meter diagram i shown a single phase kwh meter with incoming supply and out going supply to home, collage, shop etc. It is used everywhere, no matter how big or small consumption it is. Singlephase electric meter with isolated energy measurement.
Manual for modbus multifunctional metering devices and energy. Mechanism of counting and displaying the amount of energy transferred. The ade7953 is a high accuracy electrical energy measurement ic intended for single phase applications. Two standard current sensing circuit implementations shunt resistor and ct. Electromechanical energy meters have been the standard for metering the electricity since billing began. The one phase harmonic analyzer graphic power quality analyzer is used for single phase or three phase measurements of active, reactive and apparent power, power factor, phase angle, energy, voltage, current as well as peaks and harmonics. Direct connection, either using the rs485 to usb interface with 1. Implementation of a threephase electronic watthour meter using. Appropriate values of resistor r22 and capacitor c49 are chosen based on the required output current drive of the power supply. 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. Study the construction and working of single phase energy.
The product of i and v of which phase shift angle of. The cs5460a interfaces to a lowcost shunt resistor or transformer to measure current, and to a resistive divider or potential transformer to measure voltage. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Each voltage phase is referred to the neutral and has 120 phase difference with the other phases see figure 2. The torque of both the elements is added mechanically, and the total rotation of the shaft is. 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. Give the connections as per the circuit diagram above.
566 969 417 319 1257 786 1354 294 291 912 907 1524 1160 675 396 1067 1242 928 582 570 309 564 114 1551 469 1015 84 1125 791 1419 1121 533 616 679 596 1430 1285 335 1415 985 1418 596 741 329 723 6 25