Xzh Test Frequency Response Analysis Method for Transformer Winding Deformation Tester
Transformer winding deformation tester based can make accurate diagnosis on the transformer internal fault based on the measurement of the characteristic parameters of transformer windings inside, using the frequency response analysis (FRA) method developed and improved by the developed countries
Product Parameters
| Amplitude measurement range |
(-120dB) to (+20 dB) |
| Amplitude measurement accuracy |
0.1dB |
| Signal input impedance: |
1MΩ |
| Signal output impedance |
50Ω |
| Signal output amplitude |
± 20V |
| Test repetition percent |
99.9% |
| Measuring instruments dimensions |
(LxWxH) 300X340X120 (mm) |
| Instrument's aluminum box size |
(LxWxH) 310X400X330 (mm) |
| Overall weight |
13Kg |
| Operating temperature |
-10ºC to +40ºC |
| Storage temperature |
-20ºC to +70ºC |
| Relative humidity |
<90%, non-condensing |
Main performance features
Acquisition and control using high-speed, highly integrated microprocessor.
Communication USB interface used between a laptop and instrument.
The communication between the laptop and the instrument can use wireless Bluetooth interface or wireless WIFI interface (optional)
The wireless WIFI interface can be conveniently used on tablet computers and smart phones.
Hardware adopts dedicated DDS digital high-speed scanning technology (USA), which can accurately diagnose the faults like winding distorted, bulged, shift, tilt, inter-turn short-circuit deformation and inter-phase contact short-circuit.
High-speed dual-channel 16-bit A/D sampling (in field test, move tap changer, and the wave curve shows obvious change) .
The signal output amplitude is adjusted by software, the maximum amplitude peak value is ±10V.
The computer will automatically analyze the test results and generate electronic documents (Word).
The instrument has dual measurement features: linear frequency scanning measurement and segment frequency scanning measurement, compatible with measurement mode of two technical groups in China.
The amplitude-frequency characteristics are in line with the national technical specifications on amplitude-frequency characteristics tester. X-coordinate (frequency) has linear indexing and logarithmic indexing, so you can print out the curve with linear indexing and logarithmic indexing. The user can choose either according to actual needs.
Automatic test data analysis system,
