Home > Sweep Frequency Reponse Analyzer (SFRA)
-No need to connect notebook computer, the tester itself can complete the transformer winding deformation test by frequency response method.
-The sweep frequency range can reach 10 Hz to 10 MHz, and the measurement accuracy of the attenuation multiple of the output frequency stable response is high.
-Printable Frequency Response Curve and Test Data with Miniature Printer
-Automatic evaluation of three-phase correlation of test results can be completed according to DLT-911 standard
-No need to connect to laptop
GD902 frequency response tester can be accomplished by itself. The test results can be stored and printed. There is no need to connect the laptop computer. The single tester is only 5 KG, which is very convenient to carry at site. More test data can be stored when testing with computer controlled tester, and test results can generate standard WORD report documents.
-Sweep frequency Wide Range
Linear sweep： 0.5KHZ-2MHz
Section sweep：50Hz – 2000KHz
Wide-paper micro-printer is built in the tester. Users can print the frequency response curve and the attenuation multiple data corresponding to the curve obtained by the test through the wide-paper micro-printer.
DLT-911 standard evaluation program is built in, which can automatically calculate the three-phase correlation coefficient R according to the response multiple data of transformer three-phase windings. It can provide a reference for users to analyze the test results
Function and application
1.Check the frequency response data of transformer windings during routine test of power transformer maintenance
2.When the power transformer leaves the factory, the frequency response data of the winding of the transformer are measured as the characteristic fingerprint information of the transformer.
3.After the short circuit of power transformer occurs, the frequency response data of power transformer are measured and compared with the test data before the short circuit to check whether the transformer winding has been deformed.
4.Automatically produce WORD format test report based on test results.
5.Automated Wide Paper Microprinter Printing Test to Obtain Curves and Data.
6.Automatic evaluation of test results according to DLT-911
1.Two different sweep modes： Linear sweep，Section sweep；
Linear sweep： 0.5KHZ-2MHZ 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 – 2000KHZ interval 1KHZ 500 dots
2.Test range：(-100dB） - （+20dB）
5.Signal input impedance：>1M Ω
6.Signal output impedance：50 Ω；7.Repeat test：99.5%；
8.Size (Length, Width and Height) 300 X 340 X 120 (mm)
9.Size of Aluminum Alloy Transport Box (Length, Width and Height) 310 X400 X 330 (mm)
10.Instrument mainframe weight: 5KG;
11.Working temperature: - 10ºC~50ºC;
12.Ambient humidity < 90%
Phone: 86 13071289809
Add: No.128, Sanyang Road,Hankou Wuhan