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Products Infomation

Ultra-low-inductance coil, high-speed test specification! 1μH coil is tested in 10 msec!
ECG-Kokusai's advanced testing system is designed for the detailed evaluation of coil components, ensuring precise and comprehensive assessment. This high-speed inspection device operates with an application time of 4 milliseconds and a testing interval of 10 milliseconds, making it ideal for rapid and efficient testing processes.
- Evaluation Testing: Perfect for detailed assessment of coil components, providing accurate and reliable results.
- High-Speed Inspection: Operates with an application time of 4 milliseconds and a testing interval of 10 milliseconds.
- Optimized for Speed: Achieves the fastest operation with a single pulse application, no judgment, and no screen display.
This system ensures thorough evaluation while maintaining high efficiency, making it an essential tool for rigorous testing environments.
DWX Series
Model:
DWX-300LI and DWX-01LI
Maker:
ECG-Kokusai
Features
• High Voltage Application: Capable of applying up to 1000V to coils as small as 1μH. The four-terminal test circuit allows for sufficient high voltage application to ultra-low inductance coils, ensuring accurate insulation testing.
• Enhanced Sampling Resolution: With double the waveform sampling resolution of conventional testers, this system provides detailed response waveforms for thorough analysis.
• Three Testing Modes:
High-Speed Mode: Ideal for rapid operations, particularly suitable for high-speed inspection in production lines.
Test Mode: Performs good/bad assessments to ensure quality control.
Breakdown Test Mode: Conducts detailed evaluations to identify potential failure points.
• Fast Testing Capability: Achieves a minimum testing time of 10 milliseconds per pulse without judgment, making it suitable for mass production environments.
• Versatility: In addition to chip power inductors, this system supports testing of choke coils, motor coils, and coils with a low number of turns.
Waveform Example
Waveform of 0.2μH non-core coil
Specification (Comparison of standard DWX-05A)
DWX-300LI | DWX-01LI | DWX-05A
(Click for more details)
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Application | Precision test | Ultra-low inductance | Ordinary coil parts at large |
Minimum | 0.1μH~10mH | 0.1μH~10mH | 10μH~100mH |
Maximum | 3~300V | 10~1200V | 5000V |
Setting voltage | 0.3V | 1.2V | 100V |
Maximum | 1μH during 300V | 1μH during 1000V | 10μH during 1000V |
Waveform | 200MHz fairly | 100MHz | |
Minimum test time (During 1 pulse impression) |
HI Speed Mode Without judgment 10msec With judgment 18msec |
Test mode Without screen display 53msec With screen display 108msec |
200msec |
Judgment function | Area (Area%), Waveform difference area (Dif Area), Peak voltage (Peak Stb%), Electric discharge level (Laplacian), Waveform extinction ratio (Laplacian%), Break-down-voltage evaluation test (BDV), Resist pressure evaluation test by manual operation (Manual BDV) |
Area (Area), Waveform difference area (Dif Area), Amount of electric discharge (Flutter), Electric discharge level (Laplacian) |
|
Test circuit | Test circuit | 2 terminals | |
Test cable range | Recommended 1.5m (maximum 3m) | Recommended 1.6m (maximum 3m) | |
PD test | Failure | PD Symmetry | |
Additional function | Number of master waveform memory 196 models, External control by extended RS-232C and I/O and CF memory card, Result Log preservation, Screen hard copy preservation |