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Hioki is a leading manufacturer of electrical measuring instruments and test equipment, providing precision solutions for power analysis, battery testing and industrial maintenance. Its portfolio includes digital multimeters, clamp meters, power analysers, battery testers, data loggers and insulation testers. Trusted by engineers, electricians and researchers worldwide, Hioki products support applications in energy, automotive, electronics manufacturing and electrical maintenance.
The Hioki ST4030A Impulse Winding Tester is designed for detecting insulation defects and turn-to-turn shorts in motor coils and windings. It applies impulse voltage and analyzes the resulting response waveform to identify abnormalities that may not be detected by conventional tests. With an impulse voltage range of 100 V to 4200 V, high-speed sampling up to 200 MHz, and 12-bit resolution, the ST4030A provides fast and reliable winding inspection for motor manufacturing and production-line quality control.
