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Motor Testing ST4030 - HIOKI Impulse Winding Tester

ST4030 - HIOKI Impulse Winding Tester

ST4030 - HIOKI Impulse Winding Tester
ST4030 - HIOKI Impulse Winding Tester
Brand: HIOKI
Product Code: ST4030
Availability: 2-4 Weeks
*** Click here to view manufacturer specifications ***
Video

HIOKI is pleased to announce the launch of the Impulse Winding Tester ST4030, the company’s first instrument to provide functionality for testing for defects in motor windings.

When the newly launched product is combined with Hioki's existing resistance meter and withstand voltage tester offerings, the company now provides a full lineup of instruments needed to test motor windings on manufacturing lines.

The ST4030 uses the new method of response waveform quantification*1 to detect layer shorts (insulation defects)*2 that cannot be detected by the standard approach of comparing area values arising from discrepancies between waveforms. Additionally, the new instrument delivers the performance to detect waveforms with a high degree of precision thanks to 12 MHz sampling and 12-bit resolution, and it can be used with the Discharge Detection Upgrade ST9000 (featuring proprietary HIOKI filtering technology)*3 to detect partial discharges caused by pseudo-shorts*4.

DEVELOPMENT BACKGROUND
Impulse winding testers are used to test for layer shorts between windings that occur in components such as motor inductors or coils.  Typically, the waveform captured when the impulse voltage is applied to a known-good part (the master waveform) is used as a reference to generate pass/fail judgments by comparing it with a test waveform to gauge any differences in area.

With the move toward electric and self-driving vehicles driving up the quality of parts used in vehicles in recent years, motor windings are subject to increasingly strict reliability requirements. Because defects can lead to serious accidents and failures, manufacturers must guarantee the quality of motors used in vehicles over the long term.
 

However, it is difficult to detect failures, for example, single-turn faults, that do not appear in waveforms using the typical inspection method of comparing waveform area values.  Additionally, there has been increasing demand from manufacturers for the ability to detect minuscule partial discharges that are obscured by noise so that motor deterioration can be diagnosed with a high degree of precision. HIOKI developed the ST4030 to meet these requirements.

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