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With regards to partial discharge test

Impulse winding partial discharge testing machine DWX-05PD

As the use of inverter coil will increase in the future, such as house hold appliances, automotive coil, industrial commodity, the examination of such coils will spread and must be done.

With the spread of inverter coil, the reliability of insulation test is required including partial discharge, such as appliances and automotive products, used for industrial products, motors, transformers, etc., and the coil insulation examination of the motor and the transformer can be done at the same time as examining layer short according to the voltage of the impulse surge. It is an epoch-making test fixture to be able to reduce costs and shorten test time.

Features

  • The PD that takes place within the examination coil is detected by an electromagnetic wave directly
  • Partial electric discharge can only be detected by a rising high frequency signal of a narrowband antenna
  • High sensitive partial electric discharge examination is possible by placing an antenna near an examination coil
  • It is hard to be affected by the examination circuit and can facilitate introduction to product line because the handling is simple
  • The automation of the partial discharge test becomes possible.
  • The PD detection sensor (micro wave sensor module) can be put up as an option and remodel to the impulse winding examination machine (DWX series).
  • The work efficiency improves by a convenient function necessary for evaluating the partial discharge test.Break-down voltage (PDIV), electrical discharge disappearance voltage (PDEV), electrical discharge level (PDpeak), and electric discharge outbreak probability confirmation.
  • It is possible to use it visually, plainly and easily as the shape waves of electrical discharge signal can be displayed.

Overview


Usage

  • With regards to motorInverter motor・Hybrid car power motor・Various car motors, etc.
  • With regards to TransformerFor LCD TV backlight power supply・Switching power supply transformer for consumer electronic etc.
  • Various coilsIH Coil for cooking heater・Choke coil for inverter power supply high note wave filter etc.

Specifications

Impulse Testing Unit

Testing Inductance Range10 µH or more (recommended)
Sampling Speed8 bit / 10 nano-sec. (100MHz)
Sampling Memory512-byte
Applied Voltage500V~5000V(100 V increments)
Test Input Circuit
(Impedance)
Resistive divider (5 MΩ)

Partial Discharge Testing Unit

Microwave AntennaSenses partial discharge electromagnetic waves using a narrow-band patch antenna
Detection RangeRecommended to be within 30 cm of the test object during installation
Antenna Dimensions / Cable Length to Main UnitW = 80 mm, H = 80 mm, D = 10 mm, Antenna Cable Length = 2 m

Impulse Testing Unit

  • Testing Inductance Range
    10 µH or more (recommended)
  • Sampling Speed
    8 bit / 10 nano-sec. (100MHz)
  • Sampling Memory
    512-byte
  • Applied Voltage
    500V~5000V(100 V increments)
  • Test Input Circuit
    (Impedance)
    Resistive divider (5 MΩ)

Partial Discharge Testing Unit

  • Microwave Antenna
    Senses partial discharge electromagnetic waves using a narrow-band patch antenna
  • Detection Range
    Recommended to be within 30 cm of the test object during installation
  • Antenna Dimensions / Cable Length to Main Unit
    W = 80 mm, H = 80 mm, D = 10 mm, Antenna Cable Length = 2 m