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