Description
ST4030A Impulse Winding Tester for Advanced Motor Quality Control
The ST4030A Impulse Winding Tester is designed to help motor manufacturers detect insulation defects that traditional resistance testing cannot identify. By applying impulse voltage to motor windings and analyzing the resulting response waveform, this tester enables precise diagnosis of winding insulation quality, even when the rotor is already assembled.
Precise Waveform Analysis
Using a master waveform captured from a reference coil, the ST4030A compares measured waveforms over a defined interval to calculate area differences. This method allows operators to quickly and accurately determine pass or fail conditions. Hioki’s proprietary waveform quantification technology further enhances defect detection by converting response waveforms into LC and RC values, enabling identification of single turn faults that are otherwise difficult to detect.
Detecting Hidden Insulation Defects
With the optional discharge detection upgrade, the ST4030A can diagnose pseudo shorts caused by microscopic partial discharges hidden within electrical noise. This capability is essential for identifying early stage insulation deterioration before it leads to catastrophic motor failure, especially in high performance applications such as electric vehicles and automated systems.
Fast and Repeatable Production Testing
The tester delivers fast test cycles of approximately 60 milliseconds while maintaining high repeatability. Its wide applied voltage range and support for inductances from 10 microhenry to 100 millihenry make it suitable for a broad range of motor and inductor designs. A large color touch display simplifies setup and operation, while extensive interface options allow easy integration into automated production lines.
Scalable Manufacturing Environments
With support for up to 255 test condition tables and built in communication interfaces, the ST4030A adapts easily to changing production requirements. It helps manufacturers meet increasing quality demands while reducing inspection time and minimizing the risk of undetected insulation failures.
Technical Specifications
| Specification | Details |
| Product Name | ST4030A Impulse Winding Tester |
| Measurement Functions | Waveform judgment, LC and RC value quantification, insulation withstand testing |
| Applied Voltage Range | 100 V to 4200 V |
| Voltage Resolution | 10 V steps |
| Maximum Applied Energy | Approximately 88 mJ |
| Testable Inductance Range | 10 µH to 100 mH |
| Sampling Rate | Up to 200 MHz |
| Resolution | 12 bits |
| Test Time | Approximately 60 ms |
| Display | 8.4 inch color TFT touch panel |
| Interfaces | EXT I O, USB host, USB device, LAN |
| Optional Interfaces | RS 232C, GP IB |
| Power Supply | 100 to 240 V AC |
| Weight | 6.7 kg |
| Optional Upgrade | Discharge Detection Upgrade ST9000 |
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