Electric power, p, is defined as the rate at which electric energy, a work, is transferred by an electric circuit. A measuring system with three multipliers is required for 4wire threephase systems of unbalanced load with neutral conductor n. In this article, we are going to discuss that how to design a 3 phase smart energy meter using arduino. Unanswered questions what is the particular type of processor model and operating system on which a computer is based called. Pdf this paper presents design and construction of a threephase smart 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. Product overview important information on using the mcp3909 3phase energy meter reference design including a getting started.
The function of recording or registering mechanism is to record continuously a number on the dial which is proportional to the revolutions made by the moving system. Jul, 2016 operating principle of single phase induction type 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. The threewattmeter method can also be used in the absence of a neutral conductor if an artificial neutral is available. The construction of the three phase meter is shown in the figure below. Implementation of a threephase electronic watthour meter using. The energy is the total power consumed and utilised by the load at a particular interval of time. The principle of working and construction of induction type meter is very simple. When it comes to electricity, the thing of biggest concern is to keep the current and voltage levels within tolerable limits.
Revised illustration a and b 3 phase3 wire service add grounded conductor. One of the types of threephase energy meters is shown below given as an example that ensures reliable and accurate energy measurement compared to the electromechanical meters. Induction type energy meter used invariably to measure the energy consumed in any a. To study the construction and working of single phase energy meter and to find out energy consumed in 30 minutes. Phase sequence meter is used for detecting the sequence of the supply in threephase electric circuits. What are the advantages and disadvantages of usual energy meters. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. When the three phase power factor meter is connected in the circuit, under balanced load conditions, the angle through which the pointer is deflected from the. In the three phase power supply system, loss of phase means the voltage of certain voltage is lower than the threshold of the meter and meanwhile the current of this phase is lower than the starting current. A singlephase meter is used in alternating current systems. 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. Energy meter is an instrument which measures electrical energy.
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. Js if a charge, dq, due to voltage difference v flows between two points a and b. The operation of induction type energy meter depends on the passage of alternating current through two suitably located coils. Facilities instructions, standards, and techniques volume 310 watthour meter maintenance and testing internet version of this manual created december 2000 facilities engineering branch denver office denver, colorado the appearance of the internet version of this manual may differ from the original, but the contents do not. Explain the construction and operation of a dynamometer type wattmeter a with neat diagram. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. Nominal rating of the circuit breaker ka rating or breaking capacity types of mcb. Overview of single phase induction type energy meter. Pdf a prototype design for three phase smart energy meter.
The three phase energy meter has two discs mounted on the common shaft. Also, the same meter can connect or disconnect the 3 phase load remotely. By using these three phase meters, it is also possible to measure high voltages and currents by using appropriate transducers. 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. Technical specifications for three 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. Nov 27, 2019 thus from the working principle of three phase induction motor, it may be observed that the rotor speed should not reach the synchronous speed produced by the stator. If the speeds become equal, there would be no such relative speed, so no emf induced in the rotor, and no current would be flowing, and therefore no torque would be generated. Three phase industrial devicepanel power metering kit. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Three phase energy meter working, construction an energy meter is used to measure the energy consumed in the kilowatt hours.
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. A turnkey package for inexpensive permanent kwkwh metering applications of a device, panel or electrical system. When the three phase power factor meter is connected in the circuit, under balanced load conditions, the angle through which the pointer is deflected from the unity power factor position is equal to the phase angle of the circuit, because the two moving coils are fixed 120 apart. When connected to loads, they consume less power and start measuring instantaneous. Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. It is the policy of the company to serve all its customers in an orderly manner and assist in. Introduction to miniature circuit breakers mcbs what is miniature circuit breaker mcb. Installation manual three phase energy meter inogate.
The case, winding, voltage circuit, sealing arrangements, registers, terminal. Jun 30, 2018 working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. The torque of both the elements is added mechanically, and the total rotation of the shaft is proportional to the three phase energy consumption. Electrical energy meters principles and applications. Explain the construction and operation of single phase induction type energy meter with a neat diagram. It is used in domestic and industrial ac circuit for measuring the power consumption.
Energy meters are the basic part to measure the power consumption. Mcp3909 3phase energy meter reference design using. The internal construction of the meter is not described here, as meter protected by. Single phase induction type energy meter consists of four important. Type of display like analog or digital electric meter. Oct 17, 2017 3 phase smart energy meter using arduino. Standard for electric installation and use xcel energy. Sep 06, 20 how does 3 three phase power meter work. The meter will enable us to measure energy units consumed by 3 phase loads. Electronic three phase meter active and reac tive energy, with a direct connect, for din rails. How does 3 three phase power meter work by aradhana issuu. When the voltage of 120% of rated voltage is applied with no current flowing in the circuit.
Since the direction of rotation of three phase electric motors can be changed by. Facilities instructions, standards, and techniques volume 310 watthour meter maintenance and testing internet version of this manual created december 2000 facilities. Here we discuss the construction and working principle of induction type energy meter. Operating principle of single phase induction type energy meter. Ade7752b 3phase, 3wire, and 4wire energy metering ic with. Facilities instructions, standards, and techniques volume 310.
So, electronic type of three phase energy meter is explained below with its working principle. The xcel energy standard for electric installation and use contains the requirements and. Single phase induction type energy meter is also popularly known as watthour meter. Type of metering point like grid, secondary transmission, primary and local distribution. What is the solution for the drawbacks of commonly used energy meters. Article 418 meter installation 320a meter can page 52. This meter is able to perform current, voltage and power measurements in three phase supply systems. The three phase energy meter was implemented in the laboratory. Electronic threephase meter active and reactive energy with indirect connection for. This is used in each and every house and industry for calculating the energy consumed by them.
Describe the calibration of wattmeter with a neat circuit diagram. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. Energy meter or watt hour meter is classified in accordance with several factors such as. Mar 28, 2017 the function of recording or registering mechanism is to record continuously a number on the dial which is proportional to the revolutions made by the moving system. It is the policy of the company to serve all its customers in an orderly manner and assist in securing a more beneficial use of electricity. M312 electronic threephase energy meter with direct. 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. Transformer rated meters with ct cabinets, shall have meter and cabinet located in close proximity with each other. When 115% of rated voltage is applied with no current flowing in current circuit, the.