The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. 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. Electromechanical induction type meter electronic meter or solid state meter 5. For small service measurements like domestic customers, these can be directly connected between line and load. To be able to talk more about these capabilities of energy meter, we first need to mention the types of energy meters. There are many basic types of energy meters that it is not an easy task to categorize them.
Different types of energy meters electrical concepts. Jun 08, 2016 there are basically three types of energy meters. Depending on the selected graphical user interface local webui or sunny portalsunny places also local consumption and generated pv power is displayed. Mar 28, 2017 we already understood about the types of energy meters with respect to technology. Electricity meters measure a propertys electricity consumption and are used by energy companies to calculate what to charge on your electricity bill. Types of electrical meters in data centers schneider electric data center science center white paper 172 rev 1 5 permanent meters when long term data measurements are desired for monitoring, trending, and control, permanent installation metering is more effective. Design and implementation of wireless energy meter system. Electrical energy meters principles and applications. 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. If the number of joules resets to 0 j and output voltage goes to zero, then the energy meter has been overloaded and must be recharged. Energy meter is an integrating instrument which measures the total quantity of electrical energy supplied to the circuit in given period. 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.
One type is read from a car that drives through the neighborhood without stopping. Type labels are, however, difficult to read when installed. What are the advantages and disadvantages of usual energy meters. We already understood about the types of energy meters with respect to technology.
This type of energy meter is simple in construction and the accuracy is somewhat less due to creeping and other external fields. Its important that you choose the right meter for your business premises, as you dont want to pay more than what you need for your business energy. But for larger loads, step down current transformers must be placed to isolate energy meters from higher currents. Find types of energy meter related suppliers, manufacturers, products and specifications on globalspec a trusted source of types of energy meter information. Technology has made it possible to deal with the energy in a manner where energy is preserved and saved and where it can be used in the least expensive way but yet in the most effective manner. 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. If you dont, your supplier will base your energy bills on estimated usage which could result in you paying too much. Hence the steady speed attained by the meter for a constant driving torque t d is directly proportional to the resistance of the path of the induced eddy currents and inversely proportional to the square of the flux of the brake magnet. Still i will try my best to sort out different types of energy meters in some simple manner. Electric utilities use electric meters installed at customers. The feedback from the user helps in identifying the usages between authorized and unauthorized users which helps in controlling the power theft. Energy meter testing july 25, 2018 february 24, 2012 by electrical4u we cannot think of life without electricity and when there is electricity consumption there is a need to measure its consumption.
The report includes information such as a selected date based on a time period selected by the user, the. The automatic meter reading function provides users with the ability to select individual meters and generate summary reports as csv or pdf. 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. 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. Energy meters guide to the different types of meters. Here, we run through the different types of energy meter. A9mem3250 iem3250 energy meter ct modbus schneider.
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. Other types of meters communicate directly with the utility home office, without any meter readers at all. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Types of energy meterem there are two types of em which works on different mechanism. Therefore, it can be seen that it is very important for brake magnet to have constant magnetic strength throughout the use of the energy meter. Induction type energy meter used invariably to measure the energy consumed in any a. A meter that is not an advanced meter is considered to be a standard meter under. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. Using the sma energy meter with pv plants for self consumption will enable display of grid supply and feedin. The energy storage should be charged before each lesson. It is used in domestic and industrial ac circuit for measuring the power consumption.
Voltage terminals 2, 5 and 8 must be tightened down for meter types u1281, u1289, u389a, in order to establish a connection between the current and voltage circuits. Working of single phase induction type energy meter. Your gas and electricity meters monitor how much energy you use. Depending upon the result, the microcontroller will activate the buzzer. 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. Electronic meters need for prepaid energy meter system. The only onsite green power meter types in portfolio manager are solar and wind, the most common forms of green electricity. Also known as an accumulation meter, these types of meters record your electricity consumption since the meter was first installed or last reset. There are different types of electricity meters in the us. Specifications for electric meter types by manufacturer are provided below. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. A foremost problem with these types of energy meters is their proneness to tampering, which necessitates an electrical energy monitoring system.
It is much like the mileage display in your car that shows you the distance you have used. 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. Design and implementation of smart energy meter ieee. Types of electrical meters in data centers schneider electric data center science center white paper 172 rev 1 2 meters provide data that offers insight into the operation of the data center infrastructure i. Therefore, this type of meter is also called an integrating meter. If you have a flatrate meter, you will need to read your energy usage by checking how much energy your household consumed since last checking it. Smart card, which is the switch, gives information about the limitation of units. The circuit shown in figure1 is the circuit of energy metering. An electromechanical or solid state meter that cumulatively measures and records aggregated usage data that are periodically retrieved for use in customer billing or energy management. Jan 01, 2016 types of energy meter em there are two types of em which works on different mechanism. Now, lets talk about category of energy meter with respect to load level.
The energy is the total power consumed and utilised by the load at a particular interval of time. If a meter is used in combination with a current transformer. Jul 25, 2018 energy meter testing july 25, 2018 february 24, 2012 by electrical4u we cannot think of life without electricity and when there is electricity consumption there is a need to measure its consumption. Here we discuss the construction and working principle of induction type energy meter. The metal disk is nonmagnetic, but electrically conductive. In order to ensure your energy bills are accurate, its important to take regular meter readings. We at edf energy have a range of meters to suit your business needs and once youve decided on your meter we have a range of contracts. The number of revolutions is thus proportional to the energy usage. One of the two types of energy meter is the single rate meter which is mostly used in old homes andor third world countries. You may have other forms of renewable energy at your building, such as geothermal heating andor solar hot water. Wireless energy meter is a system developed to serve as a basic singlephase energy meter with advanced functionalities such as peak hour setting, peak load setting wireless reading transmission. Overview of single phase induction type energy meter. The energy meter reading is compared with the smart card information by the microcontroller.
What is the solution for the drawbacks of commonly used energy meters. However, you would have to educate yourself about the types of energy meter your household may be using. One manufacturer boasts that a single person can read off 100,000 meters in a day with this method. Energy meter or watt hour meter is classified in accordance with several factors such as. A meter is a tool that constantly counts the electricity you have used in your home. The conventional method of electricity billing involves a person from the distribution unit reading the number of units of electricity consumed in the energy meter, conveying this information to the distribution unit and then preparing the bill according to the units consumed for a fixed amount of time. Prepaymentprepaid energy meter introduction and working. What is the solution for the drawbacks of commonly. Energy meter circuit detailed project with source code.
These types of energy meter are used in countries such as australia and the united states where energy retailers provide and install both types of energy meter. Alternatively, the rid and pic are printed on the type label of the energymeter. But these are now being gradually replaced by electronic digital energy meters. Electronic energy meter industrial applications vishay.
Electromechanical energy meters have been the standard for metering the electricity since billing began. In this meter energy utilized and the corresponding amount will be displayed on the lcd continuously and communicated to the controlling base station. By load level i refer to the current bearing capacity of energy meters or you can say how much electric power, an energy meter can endure. Energy meters are the basic part to measure the power consumption. A meter that is not an advanced meter is considered to be a standard meter under this guidance. Special types of energy meters engineer experiences. Doca0005en08 3 iem3000 series user manual the information provided in this documentation contains general descriptions andor technical characteristics of the performance of the products contained herein. One unit equals one kwh killowatthour or watthours. Portfolio manager does not have specific tracking modules for these energy sources because it is not. The number of revolutions is thus proportional to the energy.