Check the motor frame (earth) from phase to phase (U to E, V to E, W to E). One of the tips should touch the motor's case while the other touches one of the exposed wire leads. Electrical motor is the common used in industry all over the world.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. endstream endobj 124 0 obj <> endobj 125 0 obj <> endobj 126 0 obj <>stream DOE is not proposing any changes to the scope of applicability of the electric motor test procedure. Adjust dc source until rated current flows Formulas For wye connected stator dc For delta connected stator dc dc I V R 2 R R dc 1 R 1 1.5 R dc Lesson 15_et332b.pptx 4 Finding Induction Motor Parameters Locked rotor test - finds the rotor parameters (R 2, x 2) and stator reactance (x 1) . Scope of the Electric Motor Test Procedure. The implementations of such test cells are described, and examples of test results are provided. 160 0 obj <>stream IEEE Standard Test Procedure for Polyphase Induction Motors and Generators 3 Park Avenue, New York, NY 10016-5997, USA IEEE Power Engineering Society Sponsored by the Electric Machinery Committee 4 November 2004 Print: SH95211 PDF: SS95211 Authorized licensed use limited to: Iowa State University. Test motor starter. DC motor fault zone analysis is a vital part of any DC motor maintenance program. Disconnect 4-way connector on underside of step and connect the stephalf of the - connector to the four-way connector pigtail. 0 By May 2011, there were nearly 60 members of the Testing Centres Network from 28 different countries, including members from several African countries. CLF-SAF-SOP-008 Isolation, Lock-Out, Tag-Out Procedure CLF-SAF-SOP-009 Live Work, Fault Finding and Testing Procedure CLF-SAF-SOP-010 Working in Vicinity of Overhead Lines or Underground Cables Procedure CLF-SAF-SOP-011 Certificate of Electrical Safety Compliance Procedure endobj [11] DC step voltage testing should not be performed on medium voltage motors if the off-line testing is being performed from the switchgear and it is known or 3. The Our 12-Hour Electric Motor Testing Training live online instructor-led course introduces students to the basics of on-line and off-line motor testing techniques. Testing Electric Motor With Multimeter Pdf. Visual inspec-tion and electrical testing of the armature and fields give the maintenance personnel an under-standing of the condition of the motor. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> The purpose of this manual is to provide direction and to the greatest extent possible, to assure a safe work environment for all electrical employees. For a three-phase motor, the isolation resistance can usually be measured between each motor winding or phase and between each motor stage and motor frame (earth) by an insulation tester or Megger 4. ?, Apply dc voltage to stator 2.) 4 0 obj As noted, this NOPR also addresses the test procedure for electric motors in response to a petition for rulemaking. This value can be estimated using the procedure described in Fig. 3. %���� How to check an electric motor 12 pdf paul marshall how to test electric how to check an electric motor 12 how to test single phase motor windings. Check C to E, S to E, R to E. Minimum test value for a good electric motor is at least 1MΩ Running Amps Test With the motor running, check the full load amps (FLA) with a suitable meter or preferably a clamp on meter and compare with the motor name plate FLA. Deviations from rated FLA could signify problems with the motor under test. Electric motor performance testing and reliability assessment Part 1. Electric motors fail. Testing Manual for Electrical Equipment Nahed Al-Hajeri 1and Anantha Madhavan 2 Abstract Quality Assurance (QA) refers to a program for the systematic monitoring and evaluation of the various aspects of a project, service, or facility to ensure that standards of quality are being met. x��XKo�8������i�)iQHl��"n������L���V+)E��w��R�6U#�"��y~�`�e�Zfy �ލ/�:˿�����.`�����L+�1�A���Y ���p~��q���:?K�01�N� �;���-�� ���4�M���Z|? ** Read the entire procedure prior to testing ** TESTING THE STEP: 1. h��W]S�8��zܝ�Z��L��$H-�)�Kypb��8vj;��{$ى��ٝ}�H���{Ͻ:'���m��. GUIDE FOR THE USE OF ELECTRIC MOTOR TESTING METHODS BASED ON IEC 60034-2-1 P LL determined from residual loss (8.2.2.5.1 in Table 2) May 2011 Version 1.1 Document developed as part of the Electric Motor Systems Annex (EMSA) Task C – Testing Centres under the IEA Implementing Agreement for a Co-operating Programme on Testing of Induction Motor October 27, 2020 February 24, 2012 by Electrical4U Demand of energy is growing day by day and along with it cost of energy rising abruptly, so now it is necessary that the health of large motors which consumes maximum power should be taken care off. – is carefully covered with some form of electrical insulation. �,*�*�3���q=W&8�����R`p�8���3. The current electric motor test procedure is at subpart B of 10 CFR part 431. Inspect the step for visible damage that might restrict step operation. Verify operation of machine space heater, if applicable. The wire itself is usually copper or aluminum, which is known to be a good conductor of the electric current that powers your equipment. September 18, 2020 by masuzi. Induction motor is one of the most important motor used in industrial applications. Read MOTOR REWINDING PROCEDURE PDF from here. ��t Implementing a predictive maintenance program takes a … Home / Technical Articles / Testing and commissioning procedure for electric motors Scope Of Motor Testing It should be noted that the scope of motor testing depends upon the motor type and size , this being indicated on the inspection forms. stream {�,�Do2ϖ=�L�]�tfڜc�O.y�ñ����]�0�{���C�"�'�(��y����^��E8�FB~��9,b�+�!�WGaU��(��eiu��mm�ϳ 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. Testing can be conducted without inter-rupting the normal operation of the motor, and in fact should be performed when the motor … How To Check An Electric Motor 12 Steps With Pictures Wikihow endobj Electric Motor Testing is usuallly the first thing to be sacrificed when cutting back on operational expenses. eˈ +Hh�:a!���g��"���^�g� �Y��F�SQ�Q����a�1!�DZ����C�y�yčwY�@�B\�=�(����[��|=M� ���I����?����)���w{�MJ[�9}�_O��N!����U�[?��>��{��$�a~���Y:������� ���N#!LbƓV��'5 ����S3$Z���BJ$��#m�z��E���4�*aIԧu%��{:"*�]W�@_� {��_����<8�2Z�F��A!\�G����1=8�L�]=p��;��� ����Ԧܬ(�[�g��i��@i*Z���lmS`M_�ݰ�#�ɋz�)�ܰ�U6W^��=a@��(bI��i0. <> Procedure: 1.) Even basic diagnostic testing can allow for major cost and time savings, reducing […] If both tests result in 0 ohms, the motor does not have any major problems and can still be used. Electric motor testing. Naturally, the bearing temperature will increase by passing the time. The flash test applies AC voltage to the winding and measures the leakage current to earth in milliamps. A comprehensive knowledge of motor opera… :�� @�3���f:��,. ELECTRICAL and MOTOR MACHINE 6-1 ELECTRICAL and MOTOR MACHINE SHOP SAFETY PROCEDURES This section has been formulated to set guidelines for all electrical work performed by this department. %PDF-1.6 %���� The induction motor shall run at the rated voltage and frequency, and each bearing temperature is measured periodically. That is a certainty. The AC hi-pot, often referred to as a ‘flash test’ is used most commonly by motor manufacturers* to test newly wound motors, and by motor rewinders to test newly rewound motors. h�b```f``J``e``?� € ",@Q� �$��, This region is bounded by murky lines, but staying at this level enables tangible comments. To keep these variables in check, regular motor testing and monitoring are critical. Check 213 flipbooks from . Looking for MOTOR REWINDING PROCEDURE PDF? 1 rule at 74 FR 32059 (July 7, 2009), and further updated test procedures for electric motors and ... of DOE’s existing electric motor test procedure in 10 CFR part 431 to the wider scope of Electric motors have had a reputation for being a mix of science and magic. Read the results on the tester, then repeat the same procedure with the other exposed wire lead. [10] Individual tests (Megohm, PI, Step Voltage, and Surge) may be performed at the discretion of the Component Engineer or designee. Electric Motor and Drive-train (Electric Mobility) Testing is a critical part of bringing any electric drive-train into production. <> The goal here is to describe the testing at a level above the physical attributes, such as temperature, pressure, force, and so on, but below the level of a final assembly inside of which the electric motor resides. 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