How to conduct a motor short-circuit test?
Thread Content
How to conduct a motor short-circuit test? Answer: The short-circuit test involves using braking equipment to prevent the motor rotor from rotating, while gradually increasing the output voltage of the three-phase voltage regulator from zero. The voltage rise stops when the current reaches the motor’s rated current; this voltage is known as the short-circuit voltage. For motors with a rated voltage of 380 volts, their short-circuit voltage is generally between 75 and 90 volts. A high short-circuit voltage indicates too large leakage reactance. An excessively low short-circuit voltage indicates that the leakage reactance is too small. Both of these are detrimental to the proper operation of the motor.
I think this is called a stall test, right?
In the tests, it is called a locked-rotor test, and there is a complete set of testing equipment for it.