That can include a key sticking out the back of a test hub that isnt properly stepped. 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. Im working in a new refinery project witnessing about 3,600 motor solo run tests. For the motor, test the stator winding resistance phasetophase and phasetoground. Electric motor testing is usuallly the first thing to be sacrificed when cutting back on operational expenses. The plans contain 15 pages of professionaly done drawings in pdf format. Vibration in a motor solo run test vibration in a motor solo run test jhaesle mechanical op 1 mar 19 11.
Rules for classification and construction vi additional rules. The test is performed by applying balanced rated voltage on the stator. A requirement of motor service that demands operation at an essentially constant load for an indefinitely long time. These tests are performed to check the electrical or mechanical defects of the induction motor. Combining the decisions made by each test, we can further improve the con.
Ieee std 1122004, ieee standard test procedure for. With our engine dollies and stands, you will have the right setup in place to complete every job. Easyrun engine test run stands, the top choice of the professionals, brings products to customers around the world. How to perform a true load test on your ac and dc drives global electronic services duration. Following data is taken from no load, locked rotor, and dc tests of a 3phase, wye connected 40 hp, 60 hz, 460 v, induction motor with a rated current of 57. Aug 08, 20 how to perform a true load test on your ac and dc drives global electronic services duration. Remember to unplug the cable at the power supply end. At our company, we create engine test stands in riverside, ca, for your builds and repairs. V hz kw rmin a cos j duty 3 motor 690 y 50 30,0 1483 31,9 0,84 s1 insul. Motor guide february 2014 low voltage motors motor guide. Sequence of shop tests compressor performance test can be conducted either before, or after the mechanical running test. This will help you determine whether the discrepancy is in the motor or in the line circuit. Discover more on our test stands, then contact us to place your order.
The rotor shall run for a while to get bearing temperature, and other variables. Testing and commissioning procedure for electric motors eep. The test generally applies between 100 and 5,000 v or more. Plus, smart safeguards protect the motor and its components under severe operating conditions. Electric motor testing explained the electricity forum. For our purposes, assume the motor has an efficiency of 92%.
Motor solo run test on diesel genset cr4 discussion thread. All variable such as current, voltage, power, stator temperature, bearing temperature are measured at the start and also in each 30min based on the. 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. We have run the motor for 4hr and every 30 min current has measured. Solo run is the part of the quality delivery assurance process. This set of plans includes 3dimensional rotating assemblies done in pdf files. 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. However, on application electrical machinery may be type tested. 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. V hz kw rmin a cos j duty 3motor 690 y 50 30,0 1483 31,9 0,84 s1 insul. Single phase motors quiz questions single phase motors quiz questions answers. A motor of this size probably typically has an efficiency of 90% to 93% 0. An electric motor emotor test stand also referred to as bench is a test stand for reproducible testing of electric motors. If manufacturers intend to test electrical machinery on their own responsibility, apart from compliance with other requirements type testing is conditional.
This test consists of applying about 1614 of rated ac voltage, or variable voltage up to a current value of 75%125% of rated current, to two line leads of an induction motor while slowly turning the rotor manually. Note a special purpose machine typically has one or more of the following characteristics. What is the power consumed by a 50 hp motor at no load. Mar 29, 2019 check that the windings are not open or blown. 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. Vibration in a motor solo run test electric motors. My overall question is this normal behavior for new motors during the initial plant solo run test. Next, you observe the motor s vibration, temperature, and sounds.
Ge motor selection and application guide reference 10. 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. May 28, 2014 sequence of shop tests compressor performance test can be conducted either before, or after the mechanical running test. First noload test the noload test, like the open circuit test on a transformer, gives information about exciting current and rotational losses. Subject to the rules for classification and construction of gl electrical machinery is not required to be type tested. Using a jumper wire, connect one end to a good ground and the other to the electric motor ground terminal. This set of plans contains blueprint type plans to build our engine test stands. Induction motor testing and evaluation summary as energy costs rise, more emphasis is being placed on determining the health of large inductive motors. Energize control circuit of starter, put starter in test position and check. Solo run is, first step for dynamic checking after all static control procedure, also depending on vendor document for every machine or equipment.
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. Notes following a paragraph in sections 1 through 8 are informational only and are not enforceable as part of this standard. If the motor has a single keyway, one of the common things that can occur on a solo run is imbalance introduced by less than perfect balance caused in the coupling hub or sleeve used for the test. 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. Bearing temperature rise limits following a heat run of 3. Jul 06, 2016 the test generally applies between 100 and 5,000 v or more. Precheck list for motor solo run physical quantities electric power. It is not common to do a fullload test of large multi megawatt motors. Induction motor testing routine testing or fat test. Test requirements for electrical machinery rules and standards. Hamm is a service engineer and evans is a senior test engineer with teco westinghouse, round rock, texas.
Your effort at site should be to resolve such issues. Ieee std 1122004, ieee standard test procedure for polyphase. With the help of the two wattmeters the input power of the motor is measured. Motor driven harus dicek dan di test setelah tahap construction pada suatu new plant. Sparks from the motor may ignite a highly gaseous environment. The mechanical run test is performed after successful completion of the pump performance test and net positive suction head test based on the api 610, the pump shall be run for 4 hours at the rated flow and pump operating parameters shall be recorded. Uses same test instrument setup as lockedrotor test. If a compressor was first subjected to mechanical running test but failed the performance test, the time, resources, and efforts expended in arranging the mechanical running test would be deemed wasted.
How to check motor start and motor run capacitors duration. Motor current monitoring and analysis mcsa is a straight forward tool to diagnosing problems with large inductive motors. Ieee std 1122004 revision of ieee std 1121996 ieee standard test procedure for polyphase induction motors and generators sponsor electric. In addition to the mechanical design, an electric motor test stand consists of accompanying measurement devices, sensors and application software. Walbro main jet cu 78 turn open low jet cl 118 turn open. The mechanical run test is performed after successful completion of the pump performance test and net positive suction head test. The majority of which start up and behave as one would expect normal vibration and temperature profile in line with. Performance and mechanical running tests of centrifugal. To conduct the tests, break the motor connections and test first in one direction the motor and then in the other the supply. The circuit diagram of the no load test is shown below. Dont forget these are the electromechanical equipments, where the problems can arise at any point of time. Dec 23, 2016 motor solo run testing ifsan khan ifsan khan.
From this viewpoint, some users prefer to run performance test first. Setting up a load to run long enough for the motor to rise up to full temperature can take. 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. Based on the api 610, the pump shall be run for 4 hours at the rated flow and pump operating parameters shall be recorded periodically e. Page 1 page 2 table of contents page 3 page 4 important safety instructions page 5 important electrical instructions page 6 important operation instructions page 7 page 8 f80 f83. It should be noted that the scope of motor testing depends upon the motor type and size, this being indicated on the.
To do a motor solo run test you need to connect the motor to a power supply. Single phase motors quiz questions electrician exams. Even though the causes of motor vibration seem almost endless, with a few straightforward checks and an inquisitive attitude, you can minimize risk during motor and train startup and maximize overall reliability of the equipment. Pinpoint gps takes boat control to the next level with an ultraprecise receiver and two digital compasses for bestinclass. Efficiently validate the performance of hvac, pumping, piping, and lighting systems using this comprehensive checklist.
Pump mechanical run test is performed for 4 hours to proves pump work in stable condition and all variables are within acceptance range. Troubleshooting assembly calibration procedure maintenance menu beltdeck lubrication. Apply rated voltage and frequency with no mechanical load. Test 6a check the dolphin cable if you have 29v dc coming out of the power supply into the cable see step 3b and 0v dc at the motor end of the cable, you will want to run a continuity check on each wire in the cable to verify that the cable is broken and needs to be replaced.
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