| After-sales Service: | Warranty Certificate |
|---|---|
| Warranty: | 12 Months |
| Transport Package: | Wooden Case with Foam |
| Trademark: | XZH TEST |
| Origin: | China Xi′an |
| Customization: |
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The transformer winding deformation tester developed according to the response analysis method is such a novel nondestructive testing equipment for internal faults of transformers. It is suitable for internal structure fault detection of 63kV ~ 500kV power transformers.
The transformer winding deformation tester quantifies the response changes of the internal winding parameters of the transformer in different frequency domains, and determines the internal windings of the transformer according to the magnitude of the change, the amplitude of the frequency response change, the area and the trend of the frequency response change. The degree of change, and then it can be judged whether the transformer has been seriously damaged and whether it needs to be overhauled according to the measurement results.
1. The acquisition control adopts a high-speed, highly integrated microprocessor.
2. USB interface for communication between laptop and instrument.
3. The hardware movement adopts DDS dedicated digital high-speed frequency sweeping technology (USA). Through testing, faults such as winding distortion, bulge, displacement, tilt, inter-turn short-circuit deformation and inter-phase contact short-circuit can be accurately diagnosed.
4. High-speed dual-channel 16-bit A/D sampling (on-site test changes the tap changer, the waveform curve has obvious changes).
5. The signal output amplitude is adjusted by software, the maximum amplitude peak value is ±10V.
6. The computer will automatically analyze the test results and generate electronic documents (Word).
7. The instrument has the function of dual measurement system of linear sweep measurement and segment sweep measurement, and is compatible with the measurement modes of the two current domestic technical schools.
8. The amplitude-frequency characteristics are in line with the technical indicators of the country on the amplitude-frequency characteristics tester. The abscissa (frequency) has two types: linear and logarithmic, so the printed curve can be either linear or logarithmic, and users can choose according to actual needs.
9. Detection data automatic analysis system
Horizontal comparison of winding similarity between three phases A, B and C
The analysis result is:
The consistency is very good
Good consistency
Poor consistency
The consistency is very poor,
Longitudinal comparison A-A, B-B, C-C to retrieve the original data and the current data in-phase to compare the winding deformation
The analysis result is:
Normal winding
Mild deformation
Moderate deformation
Severely deformed
10. Word electronic documents can be automatically generated for saving and printing.
Main technical parameters of frequency response method
scanning method
1. Linear sweep distribution
Frequency sweep measurement range: (10Hz)-(10MHz) 40000 sweep frequency points, resolutions of 0.25kHz, 0.5kHz and 1kHz.
2. Segmented frequency sweep measurement distribution
Frequency sweep measurement range: (0.5kHz)-(1MHz), 2000 frequency sweep points;
(0.5kHz)-(10kHz)
(10kHz)-(100kHz)
(100kHz)-(500kHz)
(500kHz)-(1000kHz)
Other technical parameters
1. Amplitude measurement range: (-120dB) to (+20dB)
2. Amplitude measurement accuracy: 0.1dB
3. Scanning frequency accuracy: 0.005%
4. Signal input impedance: 1MΩ
5. Signal output impedance: 50Ω
6. Signal output amplitude: ±20V
7. In-phase test repetition rate: 99.9%
8. Measuring instrument size (length, width and height) 340X240X210(mm)
9. The dimensions of the aluminum alloy box of the instrument (length, width and height) are 370X280X260 (mm), and the dimensions of the aluminum alloy box of the wire box (length, width and height) are 420X300X300 (mm)
10. Overall weight: 20Kg
11. Operating temperature: -10ºC to +40ºC Storage temperature: -20ºC to +70ºC
Relative humidity: <90%, non-condensing
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