Product Images
The Complete Package – The SFRA45 package includes all accessories for connection to the transformer The SFRA45 Tablet style Sweep Frequency Response Analyze Quarter view of the Newtons4th SFRA45 Sweep Frequency Response Analyzer Newtons4th SFRA45 Sweep Frequency Response Analyzer

Demystifying SFRA

The Sweep Frequency Response Analyzer simply injects a range of frequencies into a winding of a power transformer, when the power transformer is built correctly with no imperfections and faults the frequency response (of Gain Vs Frequency) plot of that particular type of transformer and winding on that particular transformer should exhibit a particular shape, this “shape” then becomes the transformers “fingerprint”.

Over the course of the transformers lifetime this “fingerprint” can be used in order to detect degradation of the transformer.

When is SFRA performed?

There are three main occasions when SFRA is performed

1. Upon factory quality checking
2. Before a short circuit test
3. Before and After transportation
4. ongoing scheduled maintenance

Features and benefits

0.02dB Basic accuracy	Frequency range 5Hz to 45MHz
Full Colour VGA Display	RS232, LAN and USB
PC Software package included	2Hr Battery Life
Leading Phase Accuracy	Truly Portable Measurements
LCR Mode	Save Data to external USB
50Ohm or High Impedance Input	Scope Function
Save Data to Database for comparison