SFRA Power Transformer Winding Deformation Diagnosing Tester Sweep Frequency Response Analyzer
It is a powerful and sensitive method to evaluate the mechanical integrity of core, windings and clamping structures within power transformers by measuring their electrical transfer functions over a wide frequency range. SFRA is a proven method for frequency measurements.
- Introduction:
- The structure and reference of the transformer is fixed after been made, Therefore, the frequency response of each winding will be almost the same normally.
- Some case such as cut off between circles or phases in experience, cut off or winding moved for the pull of power in running, winding moved for hit in transportation, could change the reference of the transformer ,of which the frequency response will be changed, we could detect the deformation according to the frequency response curve.
- Our company has designed the winding deformation tester base on the idea and the advanced technique.
- It could draw the frequency response curve accurately. Then we compare the curves horizontally or vertically to detect the deformation of the transformer.
- It is conformed to the standard of DL/T911 2004.
- Specifications:
| GDRZ-902 Transformer SFRA Sweep Frequency Response Analyzer | |
| Two different sweep modes: Linear sweep, Section sweep | |
| Linear Sweep | 0.5KHz - 1MHz interval 0.5KHz 2000 dots |
| Section Sweep | 50Hz - 100Hz interval 2Hz 25 dots |
| 100HZ -1KHz interval 20Hz 45 dots | |
| 1KHz - 10KHz interval 50Hz 180 dots | |
| 10KHz - 100KHz interval 0.2KHz 450 dots | |
| 100KHz - 500KHz interval 0.5KHz 800 dots | |
| 500KHz - 1000KHz interval 1KHz 500 dots | |
| Test Range | (-100dB) - (+20dB) |
| Test Accuracy | 0.1dB |
| Frequency Accuracy | <0.01% |
| Signal Input Impedance | >1M Ω |
| Signal Output Impedance | 50 Ω |
- Product Show:
