Maybe you are happy with his answer about the meter test and maybe you are not. Meter enclosure a wood or metal cabinet, or metal socket, installed indoors or outdoors, in which the companys metering equipment is located. In order to test meters, particularly those of the 0. For good insulation, the resistance usually reads in the megohm range. All phases should be protected in front of the meter with 63a fuses. Apprentice metering systems technician test purpose the amt test is a computerbased knowledge test that is used in the selection process for hiring employees into the apprentice metering systems technician position. The first describes the testing of various electronic components, assemblies, and systems. Ability testing for meter readers city of lakeland, fl.
You will not be able to use your own calculator during testing. Turn off all electrical appliances in your home before testing the accuracy of the electric meter. Handbook on electricity meters asiapacific economic cooperation. Ansi and ieee standards for metering pjm metering task force session 1 ryan nice. The meter can either be a mechanical analog meter that is read monthly by a utility service person who visits your home, or a newer digital meter that may send information via. Types voltmeters for measuring differences of potential voltage between two points in an electrical circuit. Versatility in the field the three primary methods for field testing electrical meters can all be performed easily with our powermaster line. Before starting meter testing, contact apartment or mobile home. All meter sockets and enclosures shall be listed and approved by a recognized testing lab. American national standard for electric meters, code for electricity metering.
In every residence, malls, industry, everywhere energy meters are used to measure the electrical energy consumed. The utility company charges you for the power you use based on the monthly readings of an electric meter that measures the current passing through the service entrance into your electrical service panel. The nominal bus voltage was only 600 v, but multimeters rated at v lasted only a few minutes when taking. Meter testing equipments, laboratory planning and set up. Radian customers typically consist of electric utility companies, energy meter. The resources referenced here are epo, california code of regulations, and california. Customer load testing is readily performed on electric meters, cts, pts, and transducers. Electrical energy meters principles and applications. Read the electric meter and write down the reading next to the wattage you wrote down from your selected electrical appliance.
For electrical equipment mounted higher than 6 feet, 6 inches, this space shall extend to the top of the equipment. 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. Pdf design and implementation of a low cost electricity meter. Before starting meter testing, contact apartment or mobile home park manager, then individual tenants to inform them of your purpose and of the fact that their electric power may be off for a short period of time. Meter testing systems, current transformer testers, dc to ac transfer. American national standard for electricity meters 0. The accuracy of the energy phase energy meters is described in 3. There are two tests that you will need to pass in order to qualify for the meter technician 6 position. Set the meters function range selector switch to the position see controls and indicators, item 6. Plug the red test lead into the jack of the multimeter. How to do a breaker test for a digital meter when you are having difficulty identifying all energy consuming loads on your electrical service, it is sometimes useful to do an individual circuitbycircuit inventory of the electrical loads to try to identify the circuit that is consuming the energy. The second and fourth pointers move in the opposite direction. Meter testing equipments, laboratory planning and set up by. Documentation floridas rules specific authority 366.
Radian research is 100% committed to exceeding the requirements of its customers through continual improvement of all our. 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. The megger insulation tester is essentially a highrange resistance meter ohmmeter with a builtin directcurrent generator. Intbuying kkmoon kadell kestrel klein tools lyumo leviton lipan lv. Before starting meter testing, contact apartment or mobile home park manager, then individual tenants to inform them of your purpose and of the fact that their electric. To test for current draw, begin by turning off the enigne.
The voltage rating alone will not tell you how well that meter. For electric meters, this has traditionally been interpreted as being meters of a specific meter. The amplitudes, meters are measured using meter testing bench. Connecting a meter to a voltage source with the meter configured for inline amp measurements amps mode on meter is almost a short circuit trying to measure ohms or continuity on a live circuit using the improper function some older meters. Meter constant is something that is always written on energy meters and different for different meter depends on the energy meter manufacturer. Please wait until the application loads before starting the test session, this may take up to a minute. Motors, capacitors and power conversion equipment, such as variable speed drives, can be prime generators of spikes. Historical information 20 meter reading positions 67% turnover from fy 2002 2005. Meter a device for measuring the electric power and energy supplied to a customer. Clear, straightforward test procedures make it easy for the. In addition to starting and stopping the power flow to the cutter blades, the clutch also acts as a. Best most useful and accepted description of pjm metering performance. Meter testing equipment electric meter site testing. Read the label on the appliance you have selected to determine the wattage it uses.
Abcs of multimeter safety multimeter safety and you voltage spikesan. About the test the amt test allows you to demonstrate your knowledge and understanding of the. For use with electric meter testing, either inservice testing or receipt inspection, aqls of 0. Please secure these items before entering the testing location. Our highly skilled metering professionals are among the best in the business, not just because we capture all possible revenue while reducing operational expense, but because we cater to the exact needs of each customer. This compilation is not intended as a complete survey of the field of electrical and electronic equipment testing. Changes to the temperature rise test were made to make testing consistent with the tests in the meter socket standard, ansi c12.
Use of electrical test equipment test equipment is necessary for determining proper setup, adjustment, operation, and maintenance of electrical systems and control panels. Homogeneous populations the groups or populations being sampled and tested are made up of the same or similar items, items which operate in the same way and were made in the same manner. The concept of individual onsite meter testing with current and voltage sources has become increasingly popular. Electricity and water sectors in jamaica meter testing protocol, 2017 or the protocol was developed by the office of utilities regulation. Turn on the selected electrical appliance and make an accurate. Facilities instructions, standards, and techniques volume 310. The voltage path is directly connected inside the meter with the current path and can not be fused separately. It is intended for the use of customers, architects. They record how much electricity you and your family are using. Abcs of multimeter safety multimeter safety and you voltage spikesan unavoidable hazard as distribution systems and loads become more complex, the possibilities of transient overvoltages increase. Where experience and accuracy meet quality service and accountability, youll find luthan electric meter testing in owensboro, kentucky. The complete guide to electrical insulation testing.
Apprentice metering systems technician amt test preparation. All meter and service equipment installations shall comply with the service requirements of craes and with rules and regulations of the inspection authorities having jurisdiction. Connecting a meter to a voltage source with the meter configured for inline amp measurements amps mode on meter is almost a short circuit trying to measure ohms or continuity on a live circuit using the improper function some older meters cannot handle the full voltage on the ohms function. Section 5, standards for new and inservice performance, and appendix d were extensively updated to. American national standard for electric meters code for. Initially in the hypothesis testing, the population to be surveyed is obtained from the sample size calculation. The meter can either be a mechanical analog meter that is read monthly by a utility service person who visits your home, or a newer digital.
Meter sockets a meter socket is the base portion of a socket type meter. The supply of energy to mut, its measurement, error calculation, the test sequence and. The meter is provided with a field to which entries can be made for this purpose ct or vt factor. Most other specifications have been retained from the previous edition. To offer an option for nonblondel meter forms, tolerance specifications for 0. The meter tech watches the disk of the watthour meter spin or watches the display on the meter during the meter test and in about 2 minutes they tell you that the meter is just fine and that it tested somewhere close to 100. Meter testing calibration of selfcontained meters as well as transformer rated meters. Select an electrical appliance that consumes a constant and reasonable amount of electricity so you can test the accuracy of your electric meter. It is very useful for the quality of electrical energy meter testing and assessment. Offline meters, or meter simulators, are used on your windows pc to emulate the meter hardware platform for the development and testing of meter application logic a. Increasing price of energy and public pressure to reduce. Connect one meter lead to one wire in the clutch connector at a.
Safety manager and electrician mike shares best practices for testing with an electric meter. Radian research power and energy meter testing equipment. Electrical meters are located on the outside of your home, between the power line coming from the pole and your electrical panel inside. A specifically designed program for da afghanistan breshna sherkat dabs.
You can add the mta15z accessory to facilitate ansi c12 meter testing on selfcontained meters at the customers site or in the lab. View the itron resourcefulness insight report to learn consumer and utility perceptions about disaster preparedness and explore technology that helps. Radian research is a recognized world leader of energy reference standards, meter test boards, ct pt meter field testers, dc ac transfer standards, energy meter testing and our automated laboratory energy reference systems. In test mode operation the demand interval is reduced to 3 minutes in order to facilitate accelerated testing. Alliance meter has been testing, repairing, calibrating and certifying watthour standards, electric meters, transducers and related products since 1998 with over 35 years of experience working in the electric utility industry. The national electric safety code requires an unobstructed working space that extends from the floor or ground to a minimum height of 6 feet, 6 inches. If any permanently installed meter is removed from actual. You can see meter constant of impkwh on the above image. Electric utilities readopted filed apr 11, 2019, 9. Please consult a licensed, professional electrician if you need further assistance. Pdf electric energy meters are designed to account energy under sinusoidal and nonsinusoidal conditions, because both, old and new standards for.
Watthour meter maintenance and testing, january 1992. Disconnect the clutch connector from the wiring harness. Subchapter ix electric meter testing programs and record requirements. The following is a general procedure for use of test equipment. 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. To avoid electric shock, shut off the power to the test article before testing it for continuity. Torque meter aids study of hysteresismotor rings 12. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. Notice that the pointers on the first, third and fifth dial move in the same direction as a hand of a clock. Alliance meter is nist certified for all your standard certification, electric metering calibration, electric meter. Pdf testing of energy meters under threephase determined. Voltage terminals 2, 5 and 8 must be tightened down for meter types u1281, u1289, u389a, in order to establish a. In this article a hypothesis test is performed for current consumption kwh in a household electricity meter for one year 365 days. Doublecheck that every electrical item is turned off.
A high accuracy standard for electricity meters schneiderelectric. With features that allow for greater speed, precision, and convenience for your technicians, powermaster electrical metering equipment will meet all of your electric meter testing requirements. Electric meter inspection, reading, problem diagnosis. How to check accuracy of energy meters engineer experiences. You will need to have the java runtime environment.
American national standard for electric meters code for electricity metering. No permanently installed meter shall be placed in service unless its accuracy has been established. How to test the accuracy of an electric meter hunker. Accelerated life testing laboratory altl used to conduct meter performance testing under stress conditions. Test results are clearly shown on the rm17s display for the operator and the electric utility customer.
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