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ECG-Kokusai Impulse winding partial discharge testing machine DWX-05PD

Achieve partial discharge testing within coils using a microwave sensor + impulse winding tester!

We sensitively detect the electromagnetic waves from partial discharges occurring inside the coil using a narrow-band microwave sensor from the high-speed rising impulse surge waveform. In addition to layer short testing of coil components, this groundbreaking tester enables easy partial discharge testing within coils.

Impulse winding partial discharge testing machine

Model:

DWX-05PD

Maker:

ECG-Kokusai

Features

• Direct Electromagnetic Detection: Identifies partial discharges within coils by directly detecting electromagnetic waves.

• High-Frequency Signal Detection: Utilizes a narrow-band patch antenna to detect only the high-frequency signals associated with partial discharges.

• High Sensitivity: Placing the antenna near the test coil allows for highly sensitive partial discharge testing.

• Minimal Circuit Influence: Designed to be unaffected by the test circuit, ensuring reliable results.

• Ease of Use: Simple to handle and easy to integrate into production lines.

• Automation Ready: Capable of automating the partial discharge testing process for enhanced efficiency.

• Retrofit Capability: Can be retrofitted to existing DWX series impulse winding testers with the optional microwave sensor module.

Application

With regards to motor Inverter motor・Hybrid car power motor・Various car motors, etc.
With regards to Transformer For LCD TV backlight power supply・Switching power supply transformer for consumer electronic etc.
Various coils IH Coil for cooking heater・Choke coil for inverter power supply high note wave filter etc.

Specification

Impulse Test Section
Test Inductance Range 10μH or more (recommended)
Sampling Speed 8 bit / 10 nano-sec. (100MHz)
Sampling Memory 512-byte
Applied Voltage 500V to 5000V (100V step)
Test Input Circuit
(Impedance)
Resistive divider (5MΩ)
Partial Discharge Test Section
Microwave Antenna Sensing electromagnetic waves of partial discharge with a narrow-band patch antenna
Detection Range Recommended within 30 cm from the test object during installation
Antenna Dimensions / Cable Length W = 80mm, H = 80mm, D = 10mm, Antenna cable length = 2m
Common Section
Screen Display
Waveform Display Range
640×480 dot, 8.4-inch TFT color LCD
512×256 dot
Judgment Method Comparison with master waveform
Comparison judgment by waveform area, waveform difference area, discharge amount, etc.
Automatic test of partial discharge inception voltage (PDIV) and extinction voltage (PDEV)
Judgment of presence or absence of partial discharge, discharge level, and occurrence probability
Master Waveform Memory Method Main unit: 196 types (14 types/14 pages)
Compact Flash Memory: 700 types
External Interface Parallel I/O (Start, Reset, OK, NG, Busy, etc.)
RS-232C (test control, test data input/output)
Printer port (screen hard copy)
Ethernet (optional)
External Dimensions W = 345mm, H = 185mm, D = 360mm, Weight approx. 12kg
Operating Conditions 0℃ to 40℃, Power supply voltage: 100V to 240V ±5%

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