Electronic energy meter nippen electrical instruments co. Automatic tariff calculation with wireless energy meter. Energy meters measures amount of electrical energy consumed. U389x meters signal current transformers with reversed polarity with the reverse led lit up. Installing smart meters with endusers is an integral part of the 2050 energy strategy. This paper presents a smart energy meter for an automatic metering and billing system. If one uses one kilowatt in onehour duration, one unit of energy gets consumed. Energy meter 3 rc is a wireless power metering device for elios4you pro smart systems. Those that function by means of an increase in the temperature of the device, such as herschels thermometer, are called thermal detectors. Electricity meters measure a propertys electricity consumption and are used by energy companies to calculate what to charge on your electricity bill. 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 proportional to the power passing through the meter.
Energy meters are one of the important instrument to account for energy imported exported in an industry. Market potential every house, small factory, business establishment, shops, offices etc. Sem is an electric device having energy meter chip for measuring the electric energy consumed and a wireless protocol for data communication. Iec 6205321 static meters for active energy class 1 and 2 specific requirement, am 1, 2016 iec 6205322 static meters for active energy class 0. These are the special types of energy meters which measure currents in both directions.
However, when you run case b the reg for the two meters are 3 and 1 respectively. The highend meters today come packed with a plethora of features, with major breakthroughs in being nontamperable and highly accurate at the same time. Appendix 5 types of energy meters types of energy meters it is important to be able to identify the different types of energy meters to ensure that accurate readings are taken. Jun 25, 2017 broadly, three kind of communication ports being used by the energy meters. The report includes information such as a selected date based on a time period selected by the user, the meter name, serial number, and the meter reading. A variety of improvements such as lower cost, increased accuracy, tamper detection, less bulk, bigger feature set, no moving parts, digital display, etc. 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 proportional to the power passing through the meter. Total energy joules and ergs the total amount of energy in various forms kinetic, potential, magnetic, thermal, gravitational power watts, joulessecond or ergssecond the rate at which energy is.
Energy meters energy efficiency devices modular din. Design and implementation of smart energy meter ieee. One type is read from a car that drives through the neighborhood without stopping. This article is only focused about its constructional features and its working. Energy meters have gone through several changes with respect to design and functionality in the last decade. Static watthour direct connected meters consisting of measuring elements, time of use register s, display, load switch and built in plug in type bidirectional communication module all integral with the meter housing.
Energy consumption awareness is key to reduce energy costs and improve energy efficiency on your machines and electrical assets. A wide variety of types of energy meters options are available to you, such as single phase, three phase. The mechanical meters for electricity, gas and water are being replaced with new digital meters in much of the industrialized world. Mass production of meters is possible and there is no need to create prepaid or postpaid meters separately. Threephase and singlephase energy meters, highquality pdf. Smart card, which is the switch, gives information about the limitation of units.
Basically, what happens with such meters is that the rate is pretty much the same for everything and so the charge per unit is standard regardless of what appliance you are using in your house and when you are using it because that is. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Conzerv energy meters keep all your energy consumption patterns and machineefficiency on track with schneider electrics modern and technologically advanced conzerv energy meters. With the communication options and support software available for single phase meters, these meters can be easily incorporated into automated meter reading systems. The eeprom provides nonvolatile storage of various coefficients as well as the accumulated energy. For both the meters, reading is done from left to right. The more advanced models are called smart meters, while the simple models are called amr meters. Meters installed prior to october 2006 may remain installed, however they have to measure accurately. Static energy meter errors caused by conducted electromagnetic interference abstract. The energy meter reading is compared with the smart card information by the microcontroller. If the analog meter is bidirectional it will spin backwards when your solar electric system is pushing extra electricity. What is the solution for the drawbacks of commonly used energy meters energy meter an energy meter is a. It has a rotating aluminium wheel called ferriwheel and many toothed wheels.
This type of energy meter is simple in construction and the accuracy is somewhat less due to creeping and other external fields. Energy meters are of two types electromechanical meters and electronic meters. Jan 14, 2017 watt hour meter or energy meter is an instrument which measures amount of electrical energy used by the consumers explain about 3 basic types of energy meters. American electric power company meter and service guide 4 figure 14. Mechanical energy is the sum of kinetic energy and potential energy. The number of revolutions is thus proportional to the energy usage. One important advantage of eem is that in non linear loads, its metering is highly accurate and electronic measurement is more robust than that of the conventional mechanical meters. Different types of energy meters electrical concepts. There are three key types of electricity meter and while you might be wondering who cares. Energy meters guide to the different types of meters. Depending upon the result, the microcontroller will activate the buzzer. A foremost problem with these types of energy meters is their proneness to tampering, which necessitates an electrical energy monitoring system. Electronic energy meter em34 parameters type name statistics o p e r a t i n g c h a r a c t e r i s t i c s auxiliary supply vol tage inpu cu re n ti p starting curre nt s elf pow r d 1 05 ac l 5 ao 1 0. On the basis of mus, total revenue generated by the station is calculated.
The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Smart meters are intelligent, responsive energy meters deployed for measurement and communication of energy consumption by the end consumer. The fourth problem is that meters are sealed and documentation is extremely limited. Energy meters energy efficiency devices modular dinrail. Here we discuss the construction and working principle of induction type energy meter. U128x, u8x meters signal incorrect phase sequence with the phase symbols flashing in the sequence 321. We had to purchase static energy meters used for the experiments in another european country. The performance tests of an energy meter as per iec standards are divided mainly in three segments which include its mechanical aspects, electrical circuiting, and climatic conditions. This means that the energy meter at the head is now reading only the losses in the first 23 of the circuit i. What is the solution for the drawbacks of commonly used energy meters.
Study a complete article on electromechanical energy meters here. The power companies benefits from eem in three significant ways. The automatic meter reading function provides users with the ability to select individual meters and generate summary reports as csv or pdf. Energy meter with lag adjustment devices electrical4u.
Validity note the meters are used to measure the amount of active energy consumed by an. Single phase induction type energy meter pdf to understand the basic construction and different components of a single phase induction type energy meter. To provide the possibility of effective measurement readings, the electricity meters are provided with bidirectional. These energy meters are obsolete now but some countries are still using it due to its cheapness and robustness.
Design and development of pic microcontroller based 3 phase. Facilities instructions, standards, and techniques volume 310. If a meter is used in combination with a current transformer. Dinrail mounted electricity meters for billing, cost sharing or allocation and submetering. Applicaton for electric meter installation questions or comments. Calculation of multiplication factor of energy meters. A simple 3 phase disk type energy meter is present in the diagram below. It is used everywhere, no matter how big or small consumption it is. Optical port is used very rarely once in a month to collect billing related data. The meter is optionally provided with pulse output proportional to the active energy being measured, rs485 modbus port or mbus port. It is used in domestic and industrial ac circuit for measuring the power consumption.
Meter installation from padmount transformer w vt pack 480v figure 15. May 09, 2016 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 power devive. Aug, 2006 energy meters have come a long way from being just passive instruments determining consumption of energy during a predetermined period. This document is valid for the sma energy meter emeter20 from firmware ver sion 2.
Energy independence and security act of 2007, associated with the national conservation policy act, is an initiative mainly consisting of provisions that are designed to increase energy efficiency and avail. Designing a metering system for small and mediumsized buildings. There are several types of energy meters single phase induction type energy meter are very commonly used to measure electrical energy consumed in domestic and commercial installation. Analog meters also known as electromechanical are the most common, the simple meter spins forward when your using electricity. Lets start with the explanation of this hierarchy and after that other special categories will be discussed. The technology this technology is based on internet of things where all the energy meter will be connected to a control server which will not only monitor real time power consumption but solve many of the problems that an. Jul 25, 2018 induction type meters july 25, 2018 february 24, 2012 by electrical4u 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. Energy meter is an instrument which measures electrical energy. Static, or electronic, energy meters are replacing the conventional electromechanical meters. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. The electromechanical meter consists of an aluminum disc positioned between two electromagnets, one of whose coil is connected to the load and is the current coil and the coil of another electromagnet is. In power generating stations, the cumulative reading of such energy meters are used for the calculation of total million units mus of energy exported.
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. Energy losses through venturi, orifice, and rotameter. A highperformance measurement solution for intelligent energy management in pv systems with sma devices. The energy meter is an electrical measuring device, which is used to record electrical energy consumed over a specified period of time in terms of units. So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. Are the individual phases properly connected and is the phase sequence correct. It means if current is flowing inward then it will add the units in its accumulated register and if current is flowing outwards then it will negate units from the register. Energy meter presentation 10 doca0005en 042012 presentation use of energy meters to measure electrical systems the energy meters provide combine accurate 3phase energy measurement. Our line of electronic and electomechanical single phase meters give you a choice of costeffective meters for measuring kilowatthour energy usage. An electronic energy meter eem functionally outperforms the traditional ferraris wheel meter. What are the advantages and disadvantages of usual energy meters. Electric energy meters are designed to account energy under sinusoidal and nonsinusoidal conditions, because both, old and new standards for energy meters require testing their accuracy under different conditions. The energy is the total power consumed and utilised by the load at a particular interval of time. With the iot platform, smart meters can be easily implemented to support these and many other smart grid features.
They are typically calibrated in billing units, the most common one being the kilowatt. 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. Energy losses through venturi, orifice, and rotameter flowmeters. Special types of energy meters engineer experiences. Jul 25, 2018 energy meter with lag adjustment devices july 25, 2018 february 24, 2012 by electrical4u we know that in induction type energy meters, in order to maintain speed of rotation proportional to power the phase angle between supply voltage and pressure coil flux should be equal to 90 o.
The basic unit of power is watts and it is measured by using a watt meter. Meters found registering incorrectly are almost invariably slow, which means a loss of revenue. Iec 620573 ed1 test equipment, techniques and procedures for electrical energy meters part 3. Types of energy meters with respect to technology electromechanical energy meters. The biggest superior features of energy meters from energy analyzers are. Power is the product of instantaneous voltage and current. Electronic meters display the energy used on an lcd or led display, and some can also transmit readings to remote places. The term is applied in particular to devices used to measure infrared radiation. This is of paramount importance for meters measuring power to customers. Type labels are, however, difficult to read when installed. Consumers are sometimes complaining about higher energy readings and billing after the change to a static meter, but there is not a clear common or root cause at present.
What is an energy meter and what are the basic types of. In the hands of emergency responders, survey meters would. A9mem3250 iem3250 energy meter ct modbus schneider. All residential meter sockets shall be a ringless type, equipped with a manually operated bypass either horn for 200 amps or less or lever for up to 320 amps, have individual covers and be listed in the ese book. The new electricity meters are equipped with some additional functions, beside the measurement of consumed energy. As it can be understood from the name, it is the type of meter that allows measurement with electronic circuit, much more precise than mechanical meters, advanced system and communication options to be explained in the further. Electronic meters can also record other parameters of the load and supply such as instantaneous and maximum rate of usage demands, voltages, power factor, etc. Current rating for 3 phase disk type energy meter is normally up to 100 amps. To study the construction and working of single phase energy meter and to find. The conzerv energy meters are a stepup compared to traditional counterparts newage led display and consumptionmonitoring capabilities. The type of meters used will vary from premise to premise and this will also mean that the process of reading a meter will also differ.
What are the different types, how do they work and what are the health issues. To be able to talk more about these capabilities of energy meter, we first need to mention the types of energy meters. Your gas and electricity meters monitor how much energy. Radiometer, instrument for detecting or measuring radiant energy. To enable a registration process for future upgrades of the energy meter, the documentation package is delivered with an rid and pic label. Prepaid and postpaid energy meter for billing system using. Other types of meters communicate directly with the utility home office, without any meter readers at all.
The following is a basic explanation of how bidirectional metering works. Electrical energy meters principles and applications. In this meter energy utilized and the corresponding amount will be displayed on the lcd continuously and communicated. One manufacturer boasts that a single person can read off 100,000 meters in a day with this method. Digital energy meters are the 2 nd generation of energy meters. Bidirectional metering is available to customers who install renewable fuel generators such as solar, wind, hydro or biomass sources and operate the generator in parallel with their electric companys electrical system. Moreover, it is a criminal offence to install a nonapproved meter for billing. Induction type energy meter used invariably to measure the energy consumed in any a. Find details of companies offering digital energy meter at best price. In this application a 3phase 4wire energy meter is designed using 16bit dspic microcontroller and mcp3909 adc chip. Although the meter is designed as a standard product when it is described in this way, the. Alternatively, the rid and pic are printed on the type label of the energymeter. Prepaymentprepaid energy meter introduction and working. The increase of the electric energy price forces design and introduction of precise measuring devices with high accuracy 1.
The latest en 50470 standard increases the range of meter testing under nonsinusoidal conditions, introducing. Basic electronic meters are not just more costeffective than mechanical meters, but offer further benefits. Both rs485 and rs232 are serial communication ports. A third problem is that static meters are supplied by the utility companies and are not freely available on the market in the netherlands. Meter installation from padmount transformer usi ng bushing type cts figure 14b. The number of revolutions is thus proportional to the energy. Energy meters are the basic part to measure the power consumption. These types of energy meter result in the outcome of expensive electricity bills and high energy demands. This data is used for grid management, billing, fault. Unit conversions energy, power, flux 84 energy is measured in a number of ways depending on what property is being represented. With the advancement in solar technology, electric. Alliant energy will not approve the use of altered, rusted, damaged or. Radiometers are of various types that differ in their method of measurement or detection. Overview of single phase induction type energy meter.
Best practices for selecting meters, and identifying metering points are described. The sfoe is working hard on the future of the power grid. An object possessing mechanical energy has both kinetic and potential energy, although the energy of one of the forms may be equal to zero. The offer is composed of 10 commercial references described below. Climatic conditions test include those limits which influence the performance of the meter externally.
Energy meters microprocessor dc multifunction power meter. This either takes place at the same time as heating consumption is read or centrally, e. Induction type energy meter essentially consists of following components. Energy meters allow to identify areas for improvement and to generate benefits for owners, facility managers and users. It is standard utility practice to test customers meters on circuits of over 100 kva capacity at fist 310 192.