Nov 04, 2017 swinburne s testing of dc machines, generator efficiency testing how to test a dc motor. Methods of testing direct, indirect and regenerative testing brake test swinburnes test hopkinsons test fields test retardation test separation of stray losses in a d. Internal lab test s conducted during the semester carries 10 marks. This figure file accepts no load data such as no load supply voltage, no load supply current, field current and armature resistance, current rating of machine as inputs. Swinburnes test is the most commonly used and simplest method of testing of shunt and compound wound dc machines which have constant flux. The efficiency of dc machine is generally higher when it works as a generator than motor. C shunt machine considering it as a motor by performing swinburnes test on it. In this test the efficiency of the machine at any load is predetermined. Swinburnes advanced simulation architecture allows for cyclic testing and localgeographicallydistributed hybrid simulations. There are some neat dc machine lab manuals by e5j3rjfe dc machine lab manuals. When the losses of dc machine wellknown, then we can find the efficiency of a. Mar 06, 2019 this method is an indirect method of testing a dc machine. Load test on dc shunt motor to draw speed torque and horse power efficiency characteristics.
In this method of testing no load losses are measured separately and eventually. Mar 16, 2017 swinburnes test is an indirect method of testing of dc machines. Swinburnes test is the most commonly used and simplest method of testing of shunt and compound wound dc machines which have constant. Swinburnes test for dc machines in this technique, the dc generator or dc motor is run as a motor at no load. Thus, this method is an economical and convenient method of testing of dc machines. Ee8311 syllabus electrical machines laboratory 1 regulation 2017 anna university free download. Load test on singlephase transformer and three phasetransformers.
Aug 03, 2018 hopkinsons test is another useful method of testing the efficiency of a dc machine. Electrical machines lab 1 department of electrical and. To determine transformer parameters by short circuit and open circuit test. Why the swinburne method cannot be performed on a d. Faculty of science, engineering and technology swinburne. No name of experiment page 1 to perform back to back test on single phase transformers 4 2 to study the variation of speed of a. Hopkinsons test is another useful method of testing the efficiency of a dc machine. One of these two machines is operated as a generator to supply the mechanical power to the motor. To obtain the efficiency of dc machine using swinburnes test.
Jun 20, 2019 the swineburne test is conducted for dc motors keeping the flux constant at no load. Swinburnes test and predetermination of efficiencies as generator and motor 7. Electrical machines 1 pdf notes em 1 pdf notes smartzworld. Internal lab tests conducted during the semester carries 10 marks. After knowing the value of prot from the swinburnes test, we can fairly estimate the efficiency of the motor at any loading condition. Swinburnes test is an indirect method of testing of dc machines. The armature and the field winding are connected in the series, therfore the field current is equal to the armature. Load test on singlephase transformer and three phase transformers.
Feb 26, 2014 swinburne s test in this test, the machine under test is run as a motor although it may be generator at no load, we apply the rated voltage across its terminals and adjust its field current to run the motor at its rated speed under this condition its 1. The swinburne test is only applicable for motors where flux is virtually constant, which includes dc shunt and compound motors. The test does not work for series motors because they cannot be run at light loads, and because speed and flux vary significantly in series motors. This test overcomes the drawback of swinburnes test, which does not take any account of the stray load losses occurring in dc machines under loaded condition. Mar 05, 2018 the centrepiece of swinburnes industry 4. Electrical machines laboratory 1 syllabus ee8311 pdf free download. Electrical machinel dc laboratory manual grietelectrical and. Open circuit and short circuit tests on single phase transformer. Swinburne melbourne, australia is establishing the worlds first operational industry 4. We can run the machine as a motor or as a generator. Swinburnes test is a simple method in which losses are measured separately and from their knowledge, efficiency at any desired load can be predetermined in advance. Swinburne s test on dc shunt machine lab manual once online you can see friends who are also online, and have the ability to conduct multiple chats simultaneously as well as transfer files. Electrical machines lab 1 department of electrical and electronics engineering electrical machinel. To conduct swinburnes test on dc machine to determine efficiency when working as generator and motor without actually loading themachine.
Connection for load testing of a threephase induction motor. The main advantages of the swinburnes test are as follows. The power required to test a large machine is small. This test is very convenient and economical as it is required very less power from supply to perform the test. Speed control of dc motor by armature voltage control and flux control. Speed control of dc shunt motor by armature and field control. In the swinburnes test, the constant rotational loss comprising of core and friction loss is estimated from the above equation. The centrepiece of swinburnes testlab is the worlds first industrial scale 3d printing multilayer approach to carbon fibre composite manufacture developed by fill.
Algernon charles swinburne 18371909 the yellow book. Why is the indirect method preferred to the direct loading test. Electrical and electronics engineering lab manual pdf. Open circuit and short circuit tests on single phasetransformer. As such the efficiency, calculated by swinburnes test is. The significance of electrical machinesi is renowned in the various fields of engineering. One of these two machines is operated as a generator to supply the mechanical power to the motor and the other is operated as a motor to drive the generator. As such the efficiency, calculated by swinburnes test is comparatively higher than the actual one. When swinburnes test figure file is pressed on gui based dc machine figure file fig 2 is opened. Swinburnes test of dc machine electrical study app by saru. Fills multilayer machine is the centerpiece in swinburne universitys 4.
Electrical and electronics engineering lab manual pdf eee. Tech eee atri eee department 6 lab reports note that, although students are encouraged to collaborate during lab, each must individually prepare a report and submit. It is a full load test and it requires two identical machines which are coupled to each other. Electrical machinesi lab manual anurag college of engineering, aushapur department of eee index s. This test is to find out the efficiency of the machine. The process has been developed by world leading austrian engineering company fill, to swinburnes specifications in consultation with an industry consortium. As the constant loss is known the efficiency can be predetermined at any load. Geethanjali college of engineering and technology department electrical and electronics engineering learning objectives. To perform parallel operation on two single phase transformers. End semester lab examination, conducted as per the jntu regulations, carries 50 marks. Load test on a dc motor determination of speedtorque and hpefficiency characteristics. Electrical engineering and control system lab manual ec2259 lab jan 20 anna university ec2259 lab manual download for ece we swinburnes test and speed control of shunt motor. Swinburnes test in this test, the machine under test is run as a motor although it may be generator at no load, we apply the rated voltage across its terminals and adjust its field current to run the motor at its rated speed under this condition its 1. Title of the experiment page no 7 retardation test on dc shunt motor.
The mast system allows researchers to perform largescale, threedimensional experiments to stresstest structural components and materials and determine the structure or materials capacity to withstand extreme forces. Connect the resistor loading rack at the generator armature terminals. With each load value, record the reading of v t, i a, w 1, w 2, v dc the speed n and i dc 10 amp scale in table 5. For an electrical engineer, it is obligatory to have the practical idea about the electrical machinesi. When the losses of dc machine wellknown, then we can find the efficiency of a dc machine in advance at any desired load.
Swinburne s advanced simulation architecture allows for cyclic testing and localgeographicallydistributed hybrid simulations. Algernon charles swinburne 1837 1909 algernon charles swinburne was one of the most controversial literary figures of the victorian period. Polarity test and sumpners test on single phasetransformers. To verify kirchhoffs voltage and current law in a passive resistive network. His first collection of poetry, poems and ballads series 1, caused outrage on its publication in 1866 due to the frank sexuality of its subject matter. Speed controlling of dc shunt motor by field and armature control 8. It is convenient and economical because power required to test a large machine is small i.
To conduct a load test on dc shunt motor and to find its efficiency. No account is taken of the change in iron losses from noload to. This method is an indirect method of testing a dc machine. The swineburne test is conducted for dc motors keeping the flux constant at no load. Apparatus range type quantity 1 ammeter 020 a mc 1 2 voltmeter 0300 v mc 1 wire 3 rheostats 1250. To obtain the performance characteristics of a dc shunt motor by load test. List of experiments 1 identifying the terminals of dc motors 2 to study the parts of 3 point, 4 point starter and drum controller starter 3 magnetization characteristic of dc shunt generator 4 load test on dc shunt generator. Swinburnes test and speed control of dc shuntmotor. Since constant losses are known, efficiency of swinburne s test can be predetermined at any load.
The efficiency can be predetermined at any load because constantlosses are known. In this method, the losses are measured separately and the efficiency at any desired load is predetermined. Swinburnes test of dc machine electrical study app by. The mast system allows researchers to perform largescale, threedimensional experiments to stress test structural components and materials and determine the structure or material s capacity to withstand extreme forces. To convert three phase system in to two phase by scott connection. Anna university electrical machine 1 lab manual provided by. At the end of each laboratory session you must obtain the signature of the teacher along with the marks for the session out of 10 on the lab notebook.
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