How the electric utility industry generates and delivers power to its customers covering basics, delivery, safety and generation. Detailed edition before operating the instrument, you should first read thoroughly this operation manual for safe operation and optimized performance of the product. Light commercial kilowatt hour meter, 3phase, 120277 volt autoranging power supply suitable for both 277480v, 4w, wye and 240480v 4wire delta services, 7 jaw. The motor will operate by diverting exact fraction of current which is flowing in the circuit to be measured. More information on each mode is presented in firmware overview. See the table below to check the functions to be used, and configure the settings combining multiple initial. Mitsubishi bf3 kwh meter connected up to our dryer as check meter. What is the flux of light energy in joulessecmeter 2. Ds50 and ds60 series polyphase switchboard walthour meters. Problem 2 a 100watt bulb shines light over a wall with a surface area of 25 meters 2.
Jul 25, 2018 the watt hour meter is often referred as energy meter or electric meter or electricity meter or electrical meter. Watts up watt meter and power analyzer users manual rc electronics, inc. The simplest solidstate watt hour meter is completed by adding an electronic register to record the energy consumed. The most common unit of measurement on the electricity meter is the kilowatt hour kwh, which is equal to the amount of energy used by a load of one kilowatt over a period of one hour, or 3,600,000 joules. The meter terminal block connections for all types are the same as for the corresponding standard watt, hour meters.
Power management meters manual download mitsubishi electric. Mitsubishi electric intrument transformers slideshare. The integra ci1 selfcontained 96mm din panel mounted watt hour, var hour meter measures the real consumption of active and reactive energy to class 1. Watthour meter an electrical energy meter, that is, an electricity meter that measures and registers the. However, because most circuit breakers in homes are 15 amps, i made my unit to have a range of zero to 1500 watts. Electronic single phase watthour meter adopts largescale ic, the latest microelectronic technologies and smt techniques. Active energy, digital multiplication measurement, nonvolatile memory, 8digit lcd, display scroll sequence programmable factory or end user, standard poly cover w configuration port. Electromagnetic wattmeters are used for measurement of utility frequency and audio frequency power. The total revolutions in a given time are proportional to the total energy, or watthours, consumed during that time. Overall di mensions are the same as for the type ca3 meter except for an increased overall depth due to the demand type cover.
Precision electronic energy meters can give errors less than 0. Me96ss series power meters are high accuracy meters for electrical load monitoring. Solutions include robots, automation platforms, sequence controllers, humanmachine interfaces, variable frequency drives, servo amplifiers and motors, motion controllers, computer numerical control, pcbased cnc, linear servos, and industrial sewing machines, for a broad range of factory automation 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, and other home appliances. Handbook of westinghouse watthour meters westinghouse. Taking into account the requirements of the meter, two. Dds102j3 single phase electronic energy meter register display designed for flat rate tariff and dualway meterin. You can do this in the plc by adding the kw pv to the on the rising edge of a one second timer. The construction of a typical meter of this type is shown in fig. This manual explains methods for configuring the necessary initial settings for. Watt meter measures true rms watts this circuit will give you a good, accurate watt meter that can measure various power levels. Mainly the watt hour meter comprises of a tiny motor and a counter. However, the material herein will provide sufficient information for testing.
The ddsy726 type singlephase electronic prepaid watthour meter is developed on the base of excellent singlephase electronic watthour meter. Detailed data is displayed on a liquid crystal display lcd along with potential indicators and consumption annunciators. Watts up watt meter and power analyzer users manual. Implementation of a singlephase electronic watt hour meter using the msp430f6736a if a test setup needs to be connected, the connections have to be made according to the evm design. Current transformers ct circuit voltage location of use use overcurrent strength 9 2.
When combine it with a bnet communication unit model. Although there are several different types of watthour meters, each consists essentially of a small electric motor and a counter. Watthour meter, device that measures and records over time the electric power flowing through a circuit. Meter dept general electric watthour meter 37 pages. Although there are several different types of watt hour meters, each consists essentially of a small electric motor and a counter. This format is used for directconnected meter example in figure 1 2. It is a new type of ic card prepaid meter, which has such function as power metering, load control and customer information management. We offer a comprehensive line of factory automation solutions. Mitsubishi electric fa site introduces power management meters manual information. These leading watt hour meter manufacturing companies are.
Modular heat pump systems that combine the convenience of water source. Watthour meters for the measurement of alternating current electrical energy in singlephase circuits. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Mitsubishi electric will not be responsible for exceeding the.
Problem 3 the common energy unit for electricity is the watthour wh, which. Electronic watthour meter mitsubishi denki kabushiki kaisha. Optimized refrigerant circuit and component design for improved flow. Active energy, digital multiplication measurement, nonvolatile memory, 8digit lcd, display scroll sequence programmable factory or. Induction type watthour meter electrical engineering. They are panel mount meters with a large lcd display and native modbus rtu or optional cclink communication. High power electrical systems pose dangers independent of devices like the watts up and it is the users responsibility to be familiar with these dangers and. Multiple circuit monitoring is possible using only one unit. Because of this, westinghouse was moved to the side of the glass. People would drill through the dot over the i and put a thin wire in it to stop the meter. Please use the certified watt hour meter to be used for deal and proof of electric. Power management meters high performance and reliability mitsubishi power management meters the electronic multimeters of the me96 series from mitsubishi allow. It is possible now to combine the features of vrf with a water circuit using city. A watthour meter requires a power supply provided from the three phase network itself.
The vt2 meter from global power products is a solidstate, multifunction watt hour meter capable of displaying kwh, demand, time of use, and kva or kvar readings. The early version of the watt hour meter for homes had westinghouse in frosted letters on the front of the glass. This manual describes setup and usage for the energy measuring unit. The item youve selected was not added to your cart. Please use the certified watthour meter to be used for deal and proof of electric energy. Displays the temperature, humidity, and the reading of the watthour meter. High power electrical systems pose dangers independent of devices like the watt s up and it is the users responsibility to be familiar with these dangers and take any necessary action to ensure safe use. My dad was the manager of the instrument division back then. Meter case according to din or bs made of high quality plastics. The diy digital ac watt meter is an arduino mega 2560 microcontroller controlled system that reads current and voltage in an ac system. Mitsubishi electric corporation shall not be liable, to the customer or equipment user, for. The kh of the meter is what is know as the watthour constant. The ddsy726 type singlephase electronic prepaid watt hour meter is developed on the base of excellent singlephase electronic watt hour meter.
Jun 09, 1998 the embodiment 16 provides an electronic watt hour meter including potential operation preventing means for preventing the watt hour meter from starting when no input is applied thereto. Easily viewable by backlight and dot matrix lcd display. Problem 1 the flux of sunlight at earths surface is 0 wattsmeter 2. Watthour meter maintenance and testing, january 1992. The kh of the meter is what is know as the watt hour constant. Energy meter the integra ci1 energy meter is specially designed and developed as a cost affected watt hour and var hour meter to complement the current crompton instruments ci meter series. L and n correspond to the voltage inputs from the test setup. So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. How to calculate kwh from instantaneous kw mitsubishi. If one uses one kilowatt in one hour duration, one unit of energy gets consumed.
This is the frequency of electricity, measured in hertz, of the power grid in the united states. Find here directory of watthour meter, watt hour meter manufacturers, watt hour meter suppliers and exporters. Landis gyr ea100p29 240v, 1p, watt hour meter residential kilowatt hour meter. The wattmeter is an instrument for measuring the electric power or the supply rate of electrical energy in watts of any given circuit. The embodiment 16 provides an electronic watthour meter including potential operation preventing means for preventing the watthour meter from starting when no input is applied thereto. National meter industries series 4000 k4833 kilowatt hour meter watt. One kilowatthour is defined as the energy consumed by power consumption of 1kw during 1 hour. City multi can easily combine into a building management system. Facilities instructions, standards, and techniques volume 310. The most common type of electricity meter is the electromechanical watt hour meter. This device is made up from power, current and voltage transformers, who measure the average power. A watt hour meter requires a power supply provided from the three phase network itself. Just like other watthour meters, the eddy currents induced in the aluminium disc by the brake magnet due to the revolution of the disc, arc utilised to control the continuously rotating disc.
Mitsubishi electronic multimeasuring instrument types me96ssrmb users manual. Both singlerate and double rate registers can have usual or big figures on drums. Watt hour meter manufacturers, watt hour meter suppliers. The resistor in the circuit of this coil may constitute the. Watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. In principle, the watthour meter is a small motor whose instantaneous speed is proportional to the power passing through it.
The energy e in kilowatthour kwh is equal to the power p in kilowatts kw, times the time t in hours. High performance and reliability mitsubishi power management meters. Electronic instruments are available in which six registers are provided, to record consumption at four different times of day and two levels of maximum demand. It calculates and displays the power, current, voltage and phase of a single phase ac circuit on a liquid cristal display lcd. In the same way, if you integrate the instantaneous kw over 24 hours you will find how close you got to a kwh. Made in japan year manufactured 1968 single phase 240 volts 40 amperes 50 hertz 480 rev kwh. Watthour meter article about watthour meter by the. Watt hour meter 1991 hybrid meter electonic meter and register mechanical drutype reigter 1994 current transformer meter, hybrid electromechanical meter, electronic data processing 1996 current transformer meter, fully electronic, with a complex tariff structure 2009 smart threephase current meter, electronic. Hardware overview this section describes the picref3 hardware and how it functions in the system. If 1,000 watts of power is consumed during a period of one hour, one kilowatt.
Watthour meter reference design microchip technology. Watt s up watt meter and power analyzer users manual rc electronics, inc. Operating principles, use, test, adjustment, maintenance general electric co. The basic unit of power is watts and it is measured by using a watt meter. The vt2 meter from global power products is a solidstate, multifunction watthour meter capable of displaying kwh, demand, time of use, and kva or kvar readings. Apr 02, 2011 mitsubishi bf3 kwh meter connected up to our dryer as check meter. Implementation of a singlephase electronic watthour meter. Threephase watthour meter current transformer ct mh 96h mh 96 3. Watt hour meter, device that measures and records over time the electric power flowing through a circuit. Unfollow kilowatt hour meter to stop getting updates on your ebay feed. When a meter is mounted semiflush, the mount ing screws are inserted from the back of the panel into threaded bosses on the mounting flange. A precise fraction of the current flowing in the circuit is diverted to operate the motor. Just like other watt hour meters, the eddy currents induced in the aluminium disc by the brake magnet due to the revolution of the disc, arc utilised to control the continuously rotating disc.
Watthour meter article about watthour meter by the free. Specifications of polyphase watthour meters mitsubishi. Me96ss meters provide metering and power quality information that can be used for. This instruction manual gives handling information and precautions for use of this equipment.
Watthour meters combined with verification when using voltage. Thank you for choosing the mitsubishi inverter option unit. Me96 can be installed on power distribution panels, motor control centers, machine panels or other custom panels. Bottom bearing of the meter rotor can be doublejewel or magnetic type.
By implementing the watthour meter, we can know how much amount of electrical energy is used by a consumer. The following directions should be followed when reading the dials of a watthour meter. Incorrect handling might cause an unexpected fault. Implementation of a singlephase electronic watthour. The electronic multimeters of the me96 series from mitsubishi allow an easy operation and good readability. Used mitsubishi mse310k10vr kilowatt hour meter kwh. The amount of power the meter can request is limited to the values imposed by regular standards 2 3, in the case of the meter developed the maximum power consumption from the grid is 2 w per phase. The brakemagnet and recording wheeltrain being omitted for clearances.