NEW !
IMPULSE WINDING TESTER AND MICRO WAVE SENSOR
Definitive solution of partial discharge test in electric
windings.
DWX-05PD
A narrowband microwave sensor detects the electromagnetic waves
of partial
discharges, which are generated in a coil through a surge
impulse with a fast rising
front.
PD examination of a sensitivity previously unknown in the
coil winding industry !
In addition to the turn and layer short test of windings, it
allows easy and fully
automatic partial discharge tests within a coil for applications
in production,
QC and research/lab. This includes the recording of PD inception
voltage (PDIV).
Microwave antenna
Waveform of a normal coil Waveform of a shorted coil
Example of waveforms with partial electrical discharge
Impulse winding tester
（Winding.）
ImpulseSurge 0.5～5kV
. Electrical discharge generation
Microwave sensorSignal wave form
Impulse test waveform
microwaveantenna
Micro wave sensorAmplifier and Filter circuit
DWX-05PD Outline
●Impulse test specifications
Range of test piece inductance 10μH or more (recommendation)
Sampling speed 8 bit / 10 ns (100MS/s)
Sampling memory 8 kByte
Test voltage 300V～5900V（100V step）
Voltage divider (impedance) resistive (5MΩ)
●Partial electrical discharge test specifications
Micro wave sensorIt is sensing the electric discharge
electromagnetic wave by a narrowband
plane patch antenna
Detection sensitivity -90db～-30db Within 30cm from item to be
examined
Antenna size/cable length to main unit W = 80mm H = 80mm D =
10mm cable length = 2m
●General
Screen display
Range of waveform display
640×480 8.4 inch TFT color liquid crystal
512×256
Judgment methods
Area of a comparison system waveform with a master waveform
Differential Area examination ・Corona judgment by amount of
electrical
discharge, Laplacian method
Partial electrical discharge inception voltage (PDIV)・ the
automatic
examination of those pulses of a test sequence with partial
discharge・
Electric discharge level
Master wave form storage method 210 files in RAM memory, backup
to Compact Flash card (up to 700).
External interfacesParallel I/O （ Control ） RS-232C （ enhanced
control ,test data I/O ）
Printerport （Screen Hard copy） Ethernet（Option）
physical size W = 342mm H = 188mm D = 355mm Weight 12kg
Operating condition 0℃～40℃、Power-supply voltage：100V～240V
±5%
DWX-05PD SpecificationSignal wave form of electrical PD
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