VARIABLE INERTIA TEST FOR FULL LOAD TEMPERATURE RISE TESTING OF INDUCTION MACHINES

Full load temperature rise testing of induction machines can be carrie d out in various ways, including the 'back to back test', the 'phantom -loading test' and various forms of what is generally called the 'mixe d frequency test'. The paper proposes a new method of testing called t he variable inertia test. The proposed test is purely mechanical in na ture, it does not require any electrical connection of the test machin e to any other machine, it can be very efficient in terms of space, an d it may therefore be attractive to manufacturers of large electrical machines. A simulation indicates that full load losses can be achieved relatively simply.