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. If a 3phase motor rotates in the wrong direction, you can swap any two leads to change to the desired direction. Jul 06, 2016 the test generally applies between 100 and 5,000 v or more. By the same token, if you know the standard ensures the motor is in good condition, you need not go for the solo run. These tests are performed to check the electrical or mechanical defects of the induction motor. Introduction the procedures stated in this document cover the activities in preliminary tests and inspections, functional performance tests and the commissioning of newly completed installations and existing ones after major alteration. The plans contain 15 pages of professionaly done drawings in pdf format. An integral component of any magtrol motor test system, mtest 5. We have run the motor for 4hr and every 30 min current has measured. If youre handy in the shop, and can fabricate you can use these plans to construct the very engine stand we sell.
Your effort at site should be to resolve such issues. If possible, manually rotate the shaft and check for free rotation. Test to obtain more reliable values ranges of both wattmeter should be 10a, 250v for blocked rotor test. Motor testing and general checks format electric motor. In order to properly test the motor you must remove the cable connections coming from your inverter and the metal jumpers. Uses same test instrument setup as lockedrotor test. To conduct the tests, break the motor connections and test first in one direction the motor and then in the other the supply. Checking spindle motor windings how to check for bad windings in a spindle motor to check your spindle motor for bad windings, you can use several different methods. Perform and evaluate an insulation resistance test in accordance with project test procedures. Similarly the range of ammeter and voltmeter during blocked rotor test, 10a, 250v. Commissioning procedure for solo run test and load run test open all drains of steam in turbine sev drain nozzle chest drain wheel case drain casing drain throttle valve drain check oil level in oil tank through oil level gauge and temperature of the oil should be minimum 35deg c ensure that cooling water to oil cooler. Note a special purpose machine typically has one or more of the following characteristics. The draft inspection and test plan provided as well. In the running configuration, the windings are joined with metal jumpers.
One way to test motor direction is to take your best guess on how to connect the leads, then run the motor and note the direction it spins. Precheck list for motor solo run physical quantities electric power. For the motor, test the stator winding resistance phasetophase and phasetoground. Rules for classification and construction vi additional. For our purposes, assume the motor has an efficiency of 92% or 0. In this method the motor is uncoupled from its load and the rated voltage at the rated frequency is applied to the stator to run the motor without the load. Uglum the university of texas at austin center for electromechanics the development of high power density electrical machines continues to accelerate, driven by military, transportation, and industrial. Inspection and test procedures for rotating machinery.
Here is a run down of what needs to be done during precommissioning and commissioning, respectively. The nema petition letter also stated a loss difference of 2 percent is. Induction motor performance testing with an inverter power supply. The below figure shows a basic centrifugal pump test circuit. A requirement of motor service that demands operation at an essentially constant load for an indefinitely long time. The procedure determines the running time and temperature reading intervals. Preloading roller bearing motors for noload run testing resource. You have reached 0 of 0 points, 0 not categorized 0% question 1 of 20.
Running tests without load are made for the determination of core loss and. Induction motor testing and evaluation summary as energy costs rise, more emphasis is being placed on determining the health of large inductive motors. Contactor coils are present in manual motor starters. Energize control circuit of starter, put starter in test position and check functioning. Motor controls basic theory quiz free online training. Optional analog and digital io provides more device flexibility. Dont forget these are the electromechanical equipments, where the problems can arise at any point of time. Mar 29, 2019 check that the windings are not open or blown. A motor of this size probably typically has an efficiency of 90% to 93% 0. One of the most overlooked tests when troubleshooting starting problems is a voltage drop test. What is the power consumed by a 50 hp motor at no load. This table is based on bronze alloy bolts having a minimum tensile strength of 70,000 pounds per square inch. Vibration in a motor solo run test electric motors.
We highly recommend using a qualified, experienced vendor like tigertek for your spindle motor. The test is performed by applying balanced rated voltage on the stator. The windings are marked with tags u1 and u2, v1 and v2, w1 and w2. How to perform a true load test on your ac and dc drives global electronic services duration. Centrifugal pump performance test procedure mechanical. It is generally a process of moving parts wearing against each other to produce the last small bit of size and shape adjustment that will settle them into a. This rule included new standards for motor vehicles subject to vehiclebased emission standards and test procedures, and included a wide range of amendments to part 1065. 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. This test would demonstrate a high degree of confidence with respect to mechanical fatigue. Apr 20, 2014 commissioning procedure for solo run test and load run test open all drains of steam in turbine sev drain nozzle chest drain wheel case drain casing drain throttle valve drain check oil level in oil tank through oil level gauge and temperature of the oil should be minimum 35deg c ensure that cooling water to oil cooler. Apply rated voltage and frequency with no mechanical load. The inspection and test plan for induction motor article provides you information about induction motor test and induction motor inspection in manufacturing shop. Motor current signature analysis mcsa is a proven and accepted method for determining the condition of a motors current carrying components. Whether you are a novice or a master technician, these procedures bring reliability to enable accurate and.
In that npshr test is usually carried out whenever the npsh margin is less than 1 meter. Ge motor selection and application guide reference 10. Run for 4 hours and record the temperature, vibration levels, voltage and current. Mtest 7 data sheet mtest 7 motor testing software 1.
Motor is run decoupled and motor vibrations are measured in x,y,z directions. This will help you determine whether the discrepancy is in the motor or in the line circuit. This data is optimized by our team of industry experts for ease of use, delivering streamlined information via restful web services. Precheck list for motor solo run free download as excel. To obtain short circuit current and its power factor angle, block rotor test is performed on the motor. Solo run is the part of the quality delivery assurance process. This standard provides the basic test procedure for evaluating the. Solo run is, first step for dynamic checking after all static control procedure, also depending on vendor document for every machine or equipment. Dec 30, 2018 testing of induction motor december 30, 2018 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. Pengecekan motor ini terdiri dari 2 tahapan yaitu pengecekan performa motor tanpa beban tanpa di koneksikan dengan copling pompa yang biasa disebut motor solo run no load test dan tahap selanjutnya yaitu pengecekan performa motor load test dengan dikoneksikan dengan pompa. This is the most common duty classification and accounts for approximately 90% of motor applications.
Regardless of the application, its a good practice to always test rotation. With the help of the two wattmeters the input power of the motor is measured. Ieee std 1122004, ieee standard test procedure for. To do a motor solo run test you need to connect the motor to a power supply. Next, you observe the motor s vibration, temperature, and sounds. For our purposes, assume the motor has an efficiency of 92%.
Consult manufacturer for equipment supplied with metric fasteners. Pengecekan motor ini terdiri dari 2 tahapan yaitu pengecekan performa motor tanpa beban tanpa di koneksikan dengan copling pompa yang biasa disebut motor solo run no load test dan tahap selanjutnya yaitu pengecekan performa motor load test dengan dikoneksikan dengan pompa dan di sirkulasi test dengan. Notes following a paragraph in sections 1 through 8 are informational only and are not enforceable as part of this standard. Incorporation of revised astm standards that provide flexibility in the use of alternatives to mercurycontaining industrial thermometers pdf 120 pp, 1. Im working in a new refinery project witnessing about 3600 motor solo run tests. Motor solo run or the commonly called no load test will be performed in all of. First noload test the noload test, like the open circuit test on a transformer, gives information about exciting current and rotational losses. Ieee std 1122004 revision of ieee std 1121996 ieee standard test procedure for polyphase induction motors and generators sponsor electric. Motor current monitoring and analysis mcsa is a straight forward tool to diagnosing problems with large inductive motors.
The easa technical manual is the associations definitive and most complete publication. How to make free energy generator 220v with 3kw alternator and 1 hp motor recycle free. When the motor is running and if the supply to the contactor coil fails, then motor will stop. This set of plans contains blueprint type plans to build our engine test stands. The centrifugal pump performance test procedure is carried out as follows, but it may slightly change based on pump vendor test bed condition and internal procedures. Service procedures provides original equipment manufacturer oem service information for the most common maintenance and repair operations. Testing and commissioning procedure for electric motors eep. Induction motor parameters locked rotor test the locked rotor. This set of plans includes 3dimensional rotating assemblies done in pdf files. Single phase motors quiz questions free online training. As always, make sure to disconnect all power from machine before doing anything. Testing can be conducted without interrupting the normal operation of the motor, and in fact should be performed when the motor is under a minimum of 70% load. If the motor is dry you might still give it a bake in a 200 degree f oven for a day or so. The circuit diagram of the no load test is shown below.
A protocol involving voltage level, time duration, intervals between tests and connection methods must be composed, taking into account the type and size of the equipment, its value and role in the production process and other factors. You might still take the motor stator to the shop for a quick check. Ieee std 1122004, ieee standard test procedure for polyphase. Testing and commissioning procedure for electrical installation 1. Up to 22 parameters are calculated and displayed utilizing mtest 5. Za page 6 how to test for a starter motor voltage drop. Need checklist of mechanical sequence for motor solo run test. If i use a temperature controller, the autotune built into the device often works well if i follow the manufacturers. Aug 08, 20 how to perform a true load test on your ac and dc drives global electronic services duration. Checking spindle motor windings how to spot bad windings. Here is a rundown of what needs to be done during precommissioning and commissioning, respectively. Magtrol mtest 7 hardware configuration mtest 7 graphical data output new features with mtest 7 new graphical user interface has user friendly tabbed pages for quick navigation. The purpose of the nebb procedural standards for testing adjusting and balancing of environmental systems is to establish a uniform and systematic set of criteria for the performance of the testing, adjusting and balancing of environmental or heating, ventilating and airconditioning hvac systems. Breakin or breaking in, also known as runin or running in, is the procedure of conditioning a new piece of equipment by giving it an initial period of running, usually under light load, but sometimes under heavy load or normal load.
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