Automatic three-phase squirrel-cage induction motor test assemblyfor motor thermal behaviour studies

摘要

This paper presents a laboratory assembly to perform,automatically, three-phase squirrel cage induction motor load tests.Besides the motor, mechanical load (fan), drive and electricalprotection equipment, the assembly comprises a 12 bits data acquisitionsystem, a software controlled electronic driving system, temperaturesensors and a microcomputer. It is useful for fast and reliable motorpart temperatures acquisition during any load test proposed via acomputer keyboard allowing for the data storage for motor thermalbehavior studies. The performance of the assembly was checked byperforming load tests according to the duty types proposed in IEC Publ.34-1, Rotating electrical machines, Part 1: Rating and Performance, 8thedition, 1983