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• • • • • •  


RA500 can confirm the mechanical integrity of the transformer by comparing the frequency response of the transformer with





the previously known results. Every transformer has a unique frequency response


system which changes if the mechanical


geometry of the transformer is changed. These changes can occur due to physical movement of the active parts (caused by transportation, earthquakes), or mechanical impacts due to short- circuit forces after a failure. FRA500 can be used to detect problems such as:


•Core movements •


Shorted turns or open windings


• Winding displacements or deformations • Winding connection problems •Broken clamping structures •


Faulty core grounds FRA500 injects a sine wave signal with constant


amplitude and variable frequency to one side of a transformer winding. The amplitude and phase angle values of the reference (output) signal are then compared with the corresponding values of the measured signal (from the second side of the winding). The ratio of the measured signal and reference signal magnitude is graphically displayed in dB through the full sweep frequency.


TEST RESULTS INTERPRETATION FEATURE


Connecting FRA500 to transformer (IEC 60076-18) 


DV-FRA software provides an analytical tool that can perform correlation between two traces per the IEEE C57.149-2012, or DL/T 911-2004 standards. 


  DYNAMIC RANGES


The FRA500 offers a dynamic range greater than 150 dB with a measurement accuracy of ±0.1 dB from +10 to -40 dB and ±0.5 down to -100 dB. The higher dynamic range eliminates the effects of noise and facilitates the comparison of different sweeps.


SELF-CHECK TEST


As included accessories, there is always verification box intended for the self-check of the unit.


Carl Baldwin - General Sales Manager cbaldwin@drallim.com | Tel: +44 (0)1424 205140 Web: www.drallim.com


Sweep Frequency Response Analyzer FRA500 F


Sweep F Respo


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eep eq


Response Analy Sweep frequen


eep Frequen onse Analy equency range: 0.1 Hz - 25 MHz


nge: >150 dB


Battery backup (optional): 4 hours of oper Typical sweep tim Superior frequen Sample points per s


er in t face: USB and Bluetooth s of op 0 Hz


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Sample point elation ca


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t   3-year an


importing data from other manufacturers ased ana


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PC based analysis software with user-friendly interface with 


est result comparison due to possibilit ata f aly


 


3-year warranty included with the product. 1-year


1-year extension option available upon the product registration. ension option a ailable upon or


oduc n th


4 ation w n.


For more information please contact: Carl Baldwin - General Sales Manager cbaldwin@drallim.com


al Sa ales Mana cbaldwin@drallim. om | Tel: +44 (0)1424 205140 | Web: www.drallim.com 


Representin in t


in th


esenting DV Power the UK and ROI


fa


ts per s eep: 2 000 points per deca alculation per C57.159-2012 an o p r


2 and DL


sweep: 2 000 points per decade, 32 000 points t 12


possibility of


L/T 911-2004 standar ty of


2 000 points total dards


ncy 1 Hz - 25 MHz (selec


yzer FRA50 z (selectable)


FRA500 00


  33  


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