The paper describes the parameter identification procedure based on the start-up test of an asynchronous motor. In addition, the problem of identifying the rotor resistance of an asynchronous motor based on the voltage recording at the stator terminals during the stop test is theoretically and experimentally addressed. The identification results are verified using classical measurements during the no-load and short-circuit tests. A three-phase 4-pole asynchronous squirrel-cage motor 2.2 kW, 400 V, 50 Hz was used for the simulation and measurement purposes.