Transformer winding deformation tester

About Transformer winding deformation tester

I Description

• Transformer winding deformation tester is for checking deformation conditions of high voltage transformers.
• It adopts two methods to checking deformation conditions: scan-frequency method and low-voltage impedance method.

II Main features

• Two checking methods, up-to-date technology
• No need to do any disassemblies for test, except for removing connecting busbar.
• Split style structure, connection between main instrument and computer can be via USB or Ethernet network, plug and play.
• All connectors have fault tolerance, site connection is safe and simple
• High intelligence level, equipped with self-adapting filter, automatic range adjusting, automatic sampling frequency adjusting.
• Adopts high speed high precision AD converter, good testing stability and repeatability, high testing accuracy, better than 0.1%
• Equipped with expert diagnosing system, automatic diagnose winding conditions

III Specialty of testing software

• Adopts windows platform, compatible win9X/windows2000/winXP
• Loading 6 curves simultaneously, automatically calculate parameters of every curve, automatically diagnose deformation condition and provide conclusion for reference.
• Strong software managing function, automatically save ambient condition parameters, providing basis for diagnosing winding deformation; automatically saving testing data, color printing test reports.
• Humanistic software providing options for different conditions, no need many site inputs, convenient operation.
• High intelligent software, press one key to finish all the test works

IV Main parameters of scan-frequency measuring section

• Interface between instrument and PC: USB
• Exciting signal source: self-owned standard sine wave exciting signal, output range can be adjusted by software, max. range is +/-10V; output impedance is 50.
• Two high speed parallel AD converter channels, each max. sampling ratio is 20Msps
• Resolution of collecting channel: 12 bit
• Max. dynamic error of collecting channel: 0.5%
• Input impedance of collecting channel: 1M
• Measuring range: 1K-2MHz
• Scanning method: linear or logarithmic distribution
• Scanning frequency precision: frequency precision of output sine signal is not more than 0.01%
• Max. measuring dot: 3000 dots

V Main parameters of low-voltage impedance measuring section

Voltage measuring index:

• Input voltage measuring range: 25V-500V (directly measuring); When doing impedance test, use AC240V or AC400V.
• Max. voltage: 600V
• Basic precision: 0.1%
• External potential transformer ratio: 1~10000

Current measuring index:

• Input current measuring range: 0.5-50A (directly measuring)
• Max. current: 50A
• Basic precision: 0.1%
• External current transformer ratio: 1~10000
• Impedance measuring range: 0~100%
• Impedance measuring precision: 0.1%

Power measuring index:

• Power measuring range: 15W~10kW
• Active power: 0.2% (power factor >0.5); 0.5% (power factor >0.01)
• Reactive power precision: 0.5%
• Apparent power precision: 0.5%

Power factor index:

• Measuring range: 0.000~+/-1.000
• Capacitive load: leading power factor
• Inductive load: lagging power factory
• Basic precision: 0.5%