The 3390 model is manufactured by Hioki, and is a device that is ideal for use in gauging the secondary slide of inverters. The unit features motor analysis functions such as gauging the electric angle and supporting the vector control. It also has a rapid harmonic analysis operation at a rated 50 ms data refresh.
The 3390 model has a noise analysis operation that is suitable for use in inverters with the use of FFT analysis technology.