Testing electric motors doesnt have to be a mystery. The instruments that perform these tests provide both low voltage and high voltage testing capabilities that look at different types of fail. Modular construction to suit the clients test requirements and budget. Measuaring motor insulation using hi pot tester 28012012 by lemau 1 comment when we need to evaluate the motor condition, hipot tester or high potential tester is the common equipment are used. Select ohms resistance on the multimeter and set for the 30,000ohm range. But smart companies understands is that what this means for maintenance programs is billions of dollars of lost revenue through increased motor repair costs, downtime, and waste in industrial and commercial companies. Ieee standard test procedure for polyphase induction motors and generators 3 park avenue, new york, ny 100165997, usa ieee power engineering society sponsored by the electric machinery committee 4 november 2004 print. Electric motors have had a reputation for being a mix of science and magic. Userfriendly options allowing managers to create watchlists and view all motors and their conditions instantly.
The station has the capability of testing singlephase motors up to 0. Onsite electric motor testing onsite electric motor repair. Power tests electric motor test systems feature our highly successful water brake absorber which is used as an electric motor dynamometer. Written for professionals who work in electric motors, this covers updated traction applications, the latest on solidstate motordrive controllers, electrical and mechanical parameters, specifications, shapes, performance, protection, and more. Physics 4 laboratory the electric motor prelab exercise please read the procedure section and try to understand the physics involved and how the experimental procedure works. Measuaring motor insulation using hi pot tester electrical. Headquartered in greenville, sc, with locations coast to coast, we offer inshop repair services, field services and distribution to over 4,000 customers working in continuous process, assetintensive industries. When we need to evaluate the motor condition,hipot tester or high potential tester is the common equipment are used. We have 1 club car 1996 ds golf car electric manual available for free pdf download. Motor testing insulator electricity electric current.
Restrictions limiting the speed of data acquisition and the quality of measurement data are not inevitable. In addition to providing basic information about ac motors in general, this course also includes an overview of. Testing an electric motor circuit electrical wiring. The speed of an ac motor depends on the frequency of the input power and the number of poles for which the motor is wound. Integrates testing, diagnostics, inventory control, scheduling, and cost containment. Written test description, including test environment and process. A collection of really good tips from pdma corporation, an industry leader in the field of predictive maintenance pdm and condition monitoring in the field of electric motor testing. Testing and commissioning procedure for electric motors eep. Whitelegg manufacture a large range of ac only or ac and dc test panels for electric motors. By inspecting a system in its natural working environment, our technicians can measure output and more accurately analyze an electric motor in the context of its entire system. Click the links below to view current job openings. Complete motorasset management tool for present motor management needs.
For example, a kva motor test system is capable of approximate full load testing of a hp motor and noload testing of a 5000 hp motor. Check for shorts between the power wiring and ground. Pdf electrical motor testing station with electromagnetic load. Electric motor test systems power test dynamometer. Electric motor testing deenergizedoffline motor circuit. The objective of any ac motor test is to determine the health status of the motor. Test for both legs of power of the motor circuit you mentioned that this is a 220 volt pump.
The international network of motor testing centres 2. Phenix technologies motor test systems will typically run 1 hp per kva of power fully loaded and 5 hp per kva noload. Touch one lead to each motor power lead and the other to the metal motor casing. Electric motor testing is usuallly the first thing to be sacrificed when cutting back on operational expenses. Integrated power services, or ips, is the leading provider of electric motor and generator repair services in north america. Ieee std 1122004, ieee standard test procedure for. Seven misconceptions about the testing of electric motors. The motoranalyzer1 is a universal tester to inspect electric motors and windings. List of test equipment used, including calibration information. Alltest pro 33ind electric motor tester with software check and test your electric motors easily with the alltest pro at33 industrial the at33ind instrument is the perfect tool for troubleshooting, inspection of incoming or stored motors before installation or repair and shows the complete condition of the stator windings, the rotor, contamination, ground fault and. Like our inhouse electric motor maintenance services, leppertnutmegs onsite maintenance services focus on preventative and predictive electric motor maintenance. John i would recommend that you start from the pump. The brushes must ride on the commutator smoothly with little or no sparking and no brush noise chatter.
Jul 01, 2015 basic motor testing with multimeters and ammeters july 1, 2015 by david herres 12 comments when an electric motor fails to start, runs intermittently, runs hot, or continually trips its overcurrent device, there my be a variety of causes. As we know,a multimeter or ohm meter reading only can determine if a motor winding is open or shorted but cannot checked winding insulation condition if shorted with ground or phase. Power tests electric motor test systems feature our highly successful water brake absorber which is similarly used as an electric motor dynamometer. The following information provides a brief definition and some application considerations regarding motor data on the nameplate. So when a motor fails to operate it may not be obvious what the problem is. Chapter 10 test equipment, motors, and controllers navy bmr. Jul 06, 2016 motor testing equipment newer more contemporary instruments make testing even easier. Electric motor testing explained the electricity forum. If the motor works now, make sure there is a good ground connection at the motor and check for a possible short at the ground wire.
Testing of single phase motors is pretty easy if certain basic steps are followed. The electromagnetic load emulator ele is designed to be an adjustable load of an electric motor. Take a virtual tour through our load test field our test facility is one of the most uptodate test stations of its type. Development work on drive systems for electric mobility and highefficiency engines calls for electric motor testing technology that can meet the highest standards of serviceability and flexibility. The text that was researched and compiled contains explanations of the motor parts, theory about electromagnetism and how current is used to make an electrical motor rotate. The plug reversal testing does not detect all pos sible failure modes by which a motor can fail in its application.
However, on application electrical machinery may be type tested. Electrified electric motor testing in practice porsche engineering. The electrical stresses includes overloading, single phasing, phase reversal, under voltage and overvoltage 3. Students will learn the techniques associated with use of. Many simple across the line singlephase and 3phase motors used in household appliances and industry respectively can be checked simply by changing the range of the ohm meter to the lowest offered r x 1, zeroing the meter again, and measuring the resistance between the leads of the motor. Electric motor testing proactive predictive maintenance. Development of accelerated reliability testing method for. Ieee std 1122004 revision of ieee std 1121996 ieee standard test procedure for polyphase induction motors and generators sponsor electric. The time has come to rethink the testing of electric motor power output. Development of accelerated reliability testing method for electric vehicle motor and battery system conference paper pdf available in sae technical papers 1.
Development of accelerated reliability testing method for electric vehicle motor and battery system conference paper pdf available in sae technical papers 1 april 2014 with 2,802 reads. Energized electric motor testing helps trainees localize electrical and mechanical anomalies that affect motor performance and reliability regardless of the electric motor tester equipment they utilize or eventually procure. Click here for openings in spokane, moses lake, and missoula, montana download links. Testing motors regularly should create an idea of the motors health and a general feeling of when it may fail. The paper also describes a detailed procedure of design.
However, it is well established that this testing is very effective in discrim inating between design and manufacture of motors with respect to the motor windings, the varnish. Finally, a comparison between different motors is presented. Test for direct shorts in the motors power windings in. Knowledge of the basics together with powerful new test equipment vastly simplifies the job.
View online or download club car 1996 ds golf car electric service manual. To meet these demands, kistler supplies scalable test stand solutions geared to specific applications. As we know,a multimeter or ohm meter reading only can determine if a motor winding is open or shorted but cannot checked winding insulation condition. Restrictions limiting the speed of data acquisition and the. It accurately places a controllable load on electric motors ranging from 10 through 4,500 horsepower. The complete guide to electrical insulation testing. Computerassisted motor testing station the computerassisted motor testing station was. How to test and check single phase electric motors learning. The following sections of the ansineta standard for acceptance testing specifications for. How to check an electric motor if it is bad hunker.
It should be noted that the scope of motor testing depends upon the motor type and size, this being indicated on the inspection forms. Rules for classification and construction vi additional rules. Motor testing free download as powerpoint presentation. Mar 29, 2019 check that the windings are not open or blown.
Club car 1996 ds golf car electric pdf user manuals. Electric motor testing electrical engineering centre. Seven misconceptions about the testing of electric motors new edrive testing solution. Motor current monitoring and analysis mcsa is a straight forward tool to diagnosing problems with large inductive motors. Such testing is especially important for motors operated in wet or corrosive atmospheres or in high ambient temperatures. All testers are designed to monitor and trend the condition of ac induction, synchronous, wound rotor, and dc motors and their circuits. It sounds like you lost one of the power legs of the motor circuit. There are a lot of tests for electric motors, many dependent on the size of the motor. It very important device to made production smoothly. To ensure the electrical motor condition is good or not,we must know how to testing it. Knowledge of the basics together with powerful new test. Section 7 of the ansineta standard for acceptance testing specifications for electrical power equipment and systems may be reproduced and used on a cut and paste basis for the particular type of equipment to be tested.
You will be provided with a kit of parts and equipment from which you will be challenged to build a working electric motor. The primary objective of the energized electric motor testing class is to equip trainees with the knowledge and procedures needed to determine the condition of electric motors using deenergizedoffline motor testing tools and techniques. Onsite electric motor testing onsite electric motor. Our advanced diagnostic tools can help identify an array of motor problems, like. It combines 11 different test methods within one user friendly and mobile device. These tests evaluate the integrity of the motor to run in the environment that it is installed.
Rtd circuits shall be in accordance with system design intent and machine protection device. In the course of testing, theory is tested against reality, which requires special expertise on the part of the engineers. Designed to run the motor after rewind or servicing. For instance, test equipment such as flukes 438ii power quality and motor analyzer uses algorithms to analyze not only threephase power quality but also torque, efficiency and speed to determine system performance and detect overloaded conditions. Reliability life testing and evaluation of 3phase motors. Motor testing methods based on iec 6003421 p ll determined from residual loss 8. Inspection and test procedures for rotating machinery. Seven misconceptions about the testing of electric motors hbm. Electrical motor is the common used in industry all over the world. Test results of motor starter equipment shall be in accordance with. For instance, pretty much no one tests a 100hp or smaller motor on a dynamometer unless its a very, very special motor. Physics 4 laboratory the electric motor dartmouth college.
Reasons to determine motor loading most electric motors are designed to run at 50% to 100% of rated load. Motor vibration shall be measured in a triaxial direction, i. A motor s efficiency tends to decrease dramatically below about 50% load. Test methods for determining the impact of motor condition on. Thus, a 10horsepower hp motor has an acceptable load range of 5 to 10 hp. Megger guide to electrical insulation testing pdf instrumart. Whether your motor is powering a paper mill, textile plant, steel rolling system or other type of industrial or commercial facility, leppertnutmeg can perform an array of motor maintenance and repair services, includi. The testing of rotating electrical machine for constructional and electrical requirement can be verified without disassembling the machine. Using a jumper wire, connect one end to a good ground and the other to the electric motor ground terminal. Electrical input voltagethe voltage at which the motor is designed to operate. Isbn 07389785 ss95211 no part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.
Work you way back towards the controls and power source or electrical panel. Rules for classification and construction vi additional. Small electric motors operate a wide variety of electrical devices, such as remotecontrol models, childrens railroad sets and computers. Test results of surge protection devices shall be in accordance with procedures for testing of lv surge arresters. Subject to the rules for classification and construction of gl electrical machinery is not required to be type tested. Testers for electric motors and all kinds of windings schleich. They generally operate on lowvoltage electricity 6 to 24 volts and are powered by batteries or a transformer that reduces 110 volts to the required low voltage. Pdf large quantities of electric power are used by electric motors in the production and processing of food, feed, and fiber. Menzel electric motor test field in berlin offers the latest test engineering for manufacturerindependent motor tests up to. Written for professionals who work in electric motors, this covers updated traction applications, the latest on solidstate motor drive controllers, electrical and mechanical parameters, specifications, shapes, performance, protection, and more.
Pdf test equipment for determining performance of electric motors. Maximum efficiency is usually near 75% of rated load. Guide for the use of electric motor testing methods based on iec 6003421 p ll determined from residual loss 8. The electrician or maintenance person must have this skill to determine the electrical motor condition,defected or cannot use anymore. Pdf development of accelerated reliability testing method. An ac motor of this type may be part of a pump or fan or connected to some other form of mechanical equipment such as a winder, conveyor, or mixer. Testing systems for electric motors motortest is a hardwaresoftware system used to measure electric and dynamic features of single phase, three phase and dc electric motors, compliant with iec 6003421 and ieee 112 1. Ieee std 1122004, ieee standard test procedure for polyphase. Standard for acceptance testing specifications for. The wire itself is usually copper or aluminum, which is known to be a good conductor of the electric current that powers your equipment.
781 1177 672 939 1502 327 133 185 24 1297 261 1519 1161 1024 34 1041 262 718 563 303 385 257 136 586 894 1451 683 376 1164 1402 1321 1379 534 795 1038 144 681 813 221 1158 605 101 1158 291 48