Complaint
Sweep Frequency Response Analysis (SFRA) is a powerful and sensitive method for evaluating the mechanical integrity of core, windings and clamping structures within power transformers.
Its basis is the measurement of the transformers' electrical transfer functions over a wide frequency range. The goal of SFRA is to test if physical displacements in the active part of the transformer have occurred due to aging or after a particular event such as short circuit fault and transportation.
Our SFRA Three Phase Power Transformer Sweep Frequency Response Analyzer can draw the frequency response curve accurately and then comparing the curves horizontally or vertically to detect the deformation of the transformer.
It is a powerful and sensitive method to evaluate the core, winding and clamping structures of power transformers, by measuring their electrical transfer functions over a wide frequency range.
| Item Name | SFRA Transformer Coil Distortion Testing SFRA Transformer Winding Deformation Tester |
| Linear sweep | 10HZ-1MHZ interval 0.5KHZ 2001 dots |
| 10HZ-1MHZ interval 0.25KHZ 4001 dots(PC available) | |
| 100HZ-2MHZ interval 0.25KHZ 4001 dots (PC available) | |
| Initial frequency, interval and scan dots can be set (PC available) | |
| Section sweep | 10HZ-20HZ interval 1HZ 11 dots |
| 20HZ-100HZ interval 2HZ 40 dots | |
| 100HZ -1KHZ interval 3HZ 300 dots | |
| 1KHZ-10KHZ interval 20KHZ 450 dots | |
| 10KHZ -100KHZ interval 0.3KHZ 300 dots | |
| 100KHZ - 1000KHZ interval 1KHZ 900 dots | |
| Section sweep: (conform to IEC60076-18:2012) | 20HZ-100HZ interval 2HZ 40 dots |
| 100HZ -1KHZ interval 2HZ 450 dots | |
| 1KHZ-10KHZ interval 20HZ 450 dots | |
| 10KHZ -100KHZ interval 0.2KHZ 450 dots | |
| 100KHZ - 1000KHZ interval 2.5KHZ 360 dots | |
| 1000KHZ - 2000KHZ interval 4KHZ 250 dots | |
| Test range | (-100dB) - (+20dB) |
| Test accuracy | (-40dB) - (+20dB)0.2dB (-60dB) - (-40dB)0.5dB (-80dB) - (-60dB)1.0dB |
| Frequency accuracy | <0.01% |
| Signal input impedance | >1M Ω |
| Signal output impedance | 50 Ω |
| In-phase test repetition rate | 99.5% |
| Dimension & weight | 31cm*15cm*5cm, 4kg |
| Packing dimension & weight | 52cm*38cm*45cm, 22kg |
| No. | Item Name | Qty. |
| 1 | SFRA Transformer Coil Distortion Testing SFRA Transformer Winding Deformation Tester | 1 pc |
| 2 | Power cable | 1 pc |
| 3 | Test cable | 1 pc |
| 4 | Accessory bag | 1 pc |
| 5 | USB cable | 1 pc |
| 6 | Software (CD) | 1 pc |
| 7 | Fuse 0.5A | 3 pcs |
| 8 | Print paper | 2 pcs |
| 9 | User manual | 2 pcs |
