7703 is a 2-channel 5KV impulse winding tester and able to measure inductance down to 0.5uH as well as magnify high-frequency harmonics to prevent shorts between the layers of windings. Mild corona occurring between coils would create harmonics with small amplitude and high frequency (>10MHz) which cannot be detected by a regular impulse winding tester that can only observe mild amplitude without actually identifying the fault. MICROTEST 7703 deploys “High-frequency harmonics analysis HARM “technique to magnify high-frequency harmonics then display them on screen then identify each mild discharge between layers and ensure the quality of each component coil.
High-frequency harmonics analysis has the capability to detect slot lines
Low power non-destructive test analysis
Automatic Level Control Function (ALC)
Waveform learning comparison to achieve rapid test speed
Measure voltage up to 5,000V
Measure the lowest inductance to 0.5uH
Interchangeable between Chinese and English operational interfaces/ Provide statistic and print functions
High-frequency noise signal analysis has the capability to detect slot line
Auto voltage Learn function