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A simple tap changer adjustment helped 30 dry-type transformers reduce the failure rate from 8% to under 1%. Learn why default settings may cause overexcitation, overheating and premature insulation aging under high grid voltage.

Many people cannot believe it: by changing only one parameter on 30 dry-type transformers, we reduced the failure rate from 8% to less than 1%.

It was not based on fancy technology, nor did we replace expensive imported materials. We simply adjusted the tap changer position.

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