ECG KOKUSAI DWIT-05 Impulse Winding Tester

Type: Winding Tester

Supplier / Manufacturer: ECG-KOKUSAI

Model: DWIT-05

The ECG KOKUSAI DWIT-05 is a high-resolution impulse winding tester for nondestructive coil and winding inspection. It combines 12-bit resolution, sampling up to 300 MHz, a 5 µH to 1 H inductance range, and advanced waveform evaluation for R&D and production quality control.

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High-Resolution Impulse Winding Testing

The ECG KOKUSAI DWIT-05 is a new-generation impulse winding tester designed for nondestructive inspection of coils and wound components.

It applies an impulse voltage to a reference winding and the winding under test, then compares the resulting transient waveforms to evaluate winding condition and insulation-related differences.

12-bit / 300 MHz High-resolution waveform acquisition

5 µH to 1 H Supported inductance range

100 V to 5,000 V Applied-voltage range

16,384 points Maximum sampling data

In addition to conventional waveform-area and difference-area evaluation, the DWIT-05 provides measurement and judgment functions including peak-voltage stability, resonant frequency, and logarithmic decrement.A 10.1-inch WXGA color touch display, built-in data management, Ethernet, RS-232C, USB, and external control interfaces support both laboratory evaluation and production inspection workflows.

For broader winding-test selection, see the General Winding & Coil Test Solutions →

12-Bit / Maximum 300 MHz Waveform Acquisition

High-resolution 12-bit ADC circuitry with sampling up to 300 MHz enables detailed capture and evaluation of impulse-response waveforms.

Up to 16,384 Sampling Points

Selectable sampling data up to 16,384 points provides detailed waveform acquisition and allows waveform enlargement after testing.

5 µH to 1 H Inductance Range

Supports winding and coil testing across an inductance range from 5 µH to 1 H.

1 V Applied-Voltage Setting

Provides an applied-voltage range of 100 V to 5,000 V with 1 V setting steps for precise test-condition configuration.

Advanced Waveform Judgment

Supports Area, Differential Area, Flutter, and Laplacian evaluation together with peak-voltage stability, resonant-frequency, and logarithmic-decrement judgment.

Database-Based Test Management

Stores master waveforms, judgment conditions, test waveforms, and judgment values in the built-in database. Test data can also be reviewed remotely using compatible SQL client software.

10.1-Inch Touch Display

A 10.1-inch color TFT LCD with 1280 × 800 WXGA resolution provides touch-panel operation and detailed waveform viewing.

Flexible External Connectivity

Supports RS-232C, Ethernet, USB, external control I/O, trigger output, SD and SDHC storage for integration with test and inspection workflows.

Need dedicated partial-discharge evaluation? For applications where partial-discharge evaluation is a primary requirement, see the ECG KOKUSAI DWIT-05PD .

Motor winding inspection

Coil and wound-component testing

Transformer winding evaluation

Low-inductance coil testing

Winding insulation evaluation

R&D waveform analysis

Production quality inspection

Pass/fail winding comparison

DWIT-05 Specifications

Applied Voltage / Energy	100 V to 5,000 V / 0.12 J
Voltage Accuracy	±5.0%
Applied Voltage Step	1 V
Inductance Range	5 µH to 1 H
Resolution / Sampling Speed	12-bit / Maximum 300 MHz (20 steps)
Sampling Data	16,384 / 8,192 / 4,096 / 2,048 / 1,024 / 512
Display	10.1-inch color TFT LCD, 1280 × 800 WXGA, touch panel
Test Modes	Impulse Test, BDV (PDIV) Test, Aging Test
Conventional Judgment	Area, Differential Area, Flutter, Laplacian
Additional Judgment	Peak Voltage Stability, Resonant Frequency, Logarithmic Decrement
Safety	Emergency stop button and interlock
Master Waveform Memory	1,000 models (100 models × 10 pages)
External Interfaces	RS-232C, external control I/O, Gigabit Ethernet, USB 2.0 host, trigger output
External Storage	USB memory, SD card, SDHC card up to 32 GB
Operating Environment	0°C to 40°C, up to 80% RH, non-condensing
Input Power	AC 100 V to 240 V ±5%, 50/60 Hz, 2 A
Dimensions	342 (W) × 188 (H) × 366 (D) mm, excluding protruding parts
Weight	Approx. 9.8 kg

ECG KOKUSAI DWIT-05 Impulse Winding Tester

High-Resolution Impulse Winding Testing