Loading testing device and method used for frequency converter

The invention discloses a loading testing device and method used for a frequency converter. The loading testing device comprises an induction voltage regulator, a power supply operation cabinet, the frequency converter to be tested, a load operation cabinet, a load-side part, a remote control cabinet, a power-side part, a first control isolation module, a first feedback isolation module, a second control isolation module, a second feedback isolation module and a third control isolation module, wherein the induction voltage regulator, the power supply operation cabinet, the frequency converter to be tested, the load operation cabinet, the load-side part, the remote control cabinet, the power-side part, the first control isolation module, the first feedback isolation module, the second control isolation module, the second feedback isolation module and the third control isolation module are mutually connected. The loading testing device is simple in structure, the testing process is easy to control, increasing a