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ECG-Kokusai Impulse Winding Tester DWX Series: DWX-300LI and DWX-01LI

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)
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

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