Description
ST9000 Discharge Detection Upgrade for Advanced Insulation Diagnosis
The ST9000 Discharge Detection Upgrade expands the diagnostic capability of the ST4030A Impulse Winding Tester by enabling detection of partial discharges that are typically hidden within noise. These microscopic discharges often indicate early stage insulation defects, commonly referred to as pseudo shorts, which can lead to reduced motor reliability or premature failure if left undetected.
Identifying Hidden Partial Discharges
Conventional impulse testing can struggle to isolate discharge signals from high frequency noise present in response waveforms. The ST9000 addresses this challenge by applying Hioki’s original filtering technology, which removes noise components while extracting only the partial discharge signal. This allows operators to make accurate pass or fail determinations without relying on external antennas or peripheral discharge detection devices.
Upgrade for Reliable Production Testing
Designed for manufacturing and quality control environments, the ST9000 enhances confidence in insulation testing results without complicating test setups. Because additional peripheral equipment is not required, test stations remain compact and easy to manage while still achieving high sensitivity discharge detection. This makes the upgrade especially valuable for electric motor manufacturers facing increasing quality demands driven by electric vehicle and advanced automation applications.
Improved Insulation Quality Control
By detecting discharge phenomena that occur before visible insulation breakdown, the ST9000 helps manufacturers identify marginal windings early in the production process. This reduces the risk of field failures, improves product reliability, and minimizes costly rework or recalls. The upgrade is jointly developed with Aisin AW Co., Ltd., reflecting its suitability for real world industrial motor production environments.
Integration with ST4030A
The ST9000 is available as a factory installed option or as a downloadable license, allowing flexibility based on operational needs. Once enabled, it integrates seamlessly with the ST4030A, extending its impulse testing capability without altering existing test workflows.
Technical Specifications
| Specification | Details |
| Product Name | ST9000 Discharge Detection Upgrade |
| Compatible Instrument | ST4030A Impulse Winding Tester |
| Measurement Function | Partial discharge determination |
| Detection Capability | Microscopic partial discharges obscured by noise |
| Noise Reduction Method | Hioki original filtering technology |
| Peripheral Equipment | Not required |
| Installation Options | Factory option or downloadable license |
| Application | Insulation defect and pseudo short detection |
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