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
l Two checking methods, up-to-date technology
l No need to do any disassemblies for test, except for removing connecting busbar.
l Split style structure, connection between main instrument and computer can be via USB or Ethernet network, plug and play.
l All connectors have fault tolerance, site connection is safe and simple
l High intelligence level, equipped with self-adapting filter, automatic range adjusting, automatic sampling frequency adjusting.
l Adopts high speed high precision AD converter, good testing stability and repeatability, high testing accuracy, better than 0.1%
l Equipped with expert diagnosing system, automatic diagnose winding conditions
III Specialty of testing software
l Adopts windows platform, compatible win9X/windows2000/winXP
l Loading 6 curves simultaneously, automatically calculate parameters of every curve, automatically diagnose deformation condition and provide conclusion for reference.
l Strong software managing function, automatically save ambient condition parameters, providing basis for diagnosing winding deformation; automatically saving testing data, color printing test reports.
l Humanistic software providing options for different conditions, no need many site inputs, convenient operation.
l High intelligent software, press one key to finish all the test works
IV Main parameters of scan-frequency measuring section
l Interface between instrument and PC: USB
l Exciting signal source: self-owned standard sine wave exciting signal, output range can be adjusted by software, max. range is +/-10V; output impedance is 50Ω.
l Two high speed parallel AD converter channels, each max. sampling ratio is 20Msps
l Resolution of collecting channel: 12 bit
l Max. dynamic error of collecting channel: 0.5%
l Input impedance of collecting channel: 1MΩ
l Measuring range: 1K-2MHz
l Scanning method: linear or logarithmic distribution
l Scanning frequency precision: frequency precision of output sine signal is not more than 0.01%
l Max. measuring dot: 3000 dots
V Main parameters of low-voltage impedance measuring section
Voltage measuring index:
l Input voltage measuring range: 25V-500V (directly measuring); When doing impedance test, use AC240V or AC400V.
l Max. voltage: 600V
l Basic precision: 0.1%
l External potential transformer ratio: 1~10000
Current measuring index:
l Input current measuring range: 0.5-50A (directly measuring)
l Max. current: 50A
l Basic precision: 0.1%
l External current transformer ratio: 1~10000
l Impedance measuring range: 0~100%
l Impedance measuring precision: 0.1%
Power measuring index:
l Power measuring range: 15W~10kW
l Active power: 0.2% (power factor >0.5); 0.5% (power factor >0.01)
l Reactive power precision: 0.5%
l Apparent power precision: 0.5%
Power factor index:
l Measuring range: 0.000~+/-1.000
l Capacitive load: leading power factor
l Inductive load: lagging power factory
l Basic precision: 0.5%
