A transformer turns ratio tester is a beneficial tool in diagnosing issues with transformer windings, such as shorted or open turns.
Let’s take a closer look at how this tester assists in identifying such winding problems:
Spotting Shorted Turns:
Shorted turns within transformer winding could occur from insulation breakdown, physical harm, or production flaws.
When winding experiences shorted turns, the turns ratio will be less than the expected or nameplate value.
This transformer turns ratio tester can determine the actual turns ratio and match it against the expected ratio, thereby implying the existence of shorted turns.
A significant discrepancy from the expected turns ratio can help uncover the intensity of shorted turn issues.
Finding Open Turns:
A transformer winding having an open turn implies that one or more loops in the winding are disconnected or broken.
When there are open turns in the winding, the turns ratio will exceed the expected or nameplate value.
The tester can measure the real turns ratio and contrast it with the expected ratio, consequently revealing any open turns.
A turns ratio that’s unexpectedly high can indicate the problem and its size regarding the open turn.
Winding Configuration Confirmation:
The turns ratio tester can also check the winding configuration of a transformer, such as whether it’s a step-up or step-down transformer.
By determining the turns ratio, the tester can affirm the expected winding configuration and spot any inconsistencies.
This is especially helpful in troubleshooting transformers where the winding configuration isn’t clearly marked or known.
Comparison with Nameplate Data:
The tester can measure the turns ratio and compare it with the expected or nameplate turns ratio.
Significant deviations from the data on the nameplate can suggest winding problems, like shorted or open turns, which require further inspection.
This comparison aids in detecting possible issues and estimating the extent of the problems with winding.
Utilizing a transformer turns ratio tester allows maintenance staff and technicians to diagnose winding problems accurately and promptly, helping them prioritize repairs, prevent further damage, and ensure the transformer operates correctly.
