Excuse me Sir, l have megger MIT515 ,and During the test electricalPowerTransformer , this phrase appeared to me: br.d
@TEquipment
3 жыл бұрын
br.d = breakdown detection This is a common error code on this device. If insulation breakdown is detected, the unit aborts the test and flashes “brd” and the final test result alternately in the main digital display. This display is disabled when in burn mode as the unit will continue the test without aborting. The instrument detects breakdown in terms of a rapid drop in test voltage commensurate with that caused by an arc across or though the insulation under test. In breakdown mode the test will automatically terminate on detection of a breakdown to prevent damage to the insulation. Burn mode disables the normal breakdown detection and test voltage continues after breakdown of the insulation. This enables the location of the failure to be seen and detected acoustically but it is a destructive test
@eng.omareyadaljorani9954
3 жыл бұрын
Thank you, sir, for your support. When I did the test on the second day, once with the same megger and again with another megger, the “brd” code disappeared, and both instruments read the Insulation values correctly. Does that mean there is no problem in the insulation of transformer ? Waiting for your reply as soon as possible. Best regards.
@TEquipment
3 жыл бұрын
Yes you are correct, there should not be any issue with the insulation as long as you no longer see the br.d error code. If you are concerned, try the test a few more times just to be sure there are no errors. It's possible the error was due to a loose connection from your test leads.
@eng.omareyadaljorani9954
3 жыл бұрын
@@TEquipment Thank you for expressing your interest.
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