Electricity + Control March 2021

TRANSFORMERS, SUBSTATIONS + CABLES

Further EMI testing following the cleaning of the insulator heads and centre conductor showed decreased discharge activity and highlighted the importance of IPB maintenance. tenance activities, as these had been frequently postponed during major outages. As this case study demonstrates, EMI diagnostics is a powerful tool for performing condition assessments on rotating machines; it can not only detect defects but also locate the source. This can lead to shorter outages for inter- ventions and quicker, more targeted repairs. □

Discharge activity was observed on the insulator heads and centre conductor on the A phase.

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This blog post is republished with permission from Doble Engineering Company Africa.

Electricity + Control MARCH 2021

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